Title of Invention

"TRPV1 ANTAGONISTS AND USES THEREOF"

Abstract The invention relates to compounds of formula I and pharmaceutically acceptable derivatives thereof, compositions comprising an effective amount of a compound of formula I or a pharmaceutically acceptable derivative thereof, and methods for treating or preventing a condition such as pain, UI, an ulcer, IBD and IBS, comprising administering to an animal in need thereof an effective amount of a compound of formula I or a pharmaceutically acceptable derivative thereof.
Full Text TRPV1 ANTAGONISTS AND USES THEREOF
This application claims the benefit of U.S. provisional application no. 60/926,661, filed April 27, 2007, U.S. provisional application no. 60/930,036, filed May 11, 2007, U.S. provisional application no. 60/937,003, filed June 21, 2007, and U.S. provisional application no. 60/962,409, filed July 27, 2007, the disclosure of each of which is incorporated by reference herein in its entirety.
1. FIELD OF THE INVENTION
The invention relates to compounds of formula I, and pharmaceutically acceptable derivatives thereof, compositions comprising an effective amount of a compound of formula I and methods for treating or preventing a condition such as pain, UI, an ulcer, IBD, and IBS, comprising administering to an animal in need thereof an effective amount of a compound of formula I.
2. BACKGROUND OF THE INVENTION
Pain is the most common symptom for which patients seek medical advice and treatment. Pain can be acute or chronic. While acute pain is usually self-limited, chronic pain persists for 3 months or longer and can lead to significant changes in a patient’s personality, lifestyle, functional ability and overall quality of life (K.M. Foley, Pain, in Cecil Textbook of Medicine 100-107 (J.C. Bennett and F. Plum eds., 20th ed. 1996)).
Moreover, chronic pain can be classified as either nociceptive or neuropathic. Nociceptive pain includes tissue injury-induced pain and inflammatory pain such as that associated with arthritis. Neuropathic pain is caused by damage to the peripheral or central nervous system and is maintained by aberrant somatosensory processing. There is a large body of evidence relating activity at vanilloid receptors (V. Di Marzo et al, Current Opinion in Neurobiology 12:372-379 (2002)) to pain processing.
Nociceptive pain has been traditionally managed by administering non-opioid analgesics, such as acetylsalicylic acid, choline magnesium trisalicylate, acetaminophen,
ibuprofen, fenoprofen, diflusinal, and naproxen; or opioid analgesics, including morphine, hydromorphone, methadone, levorphanol, fentanyl, oxycodone, and oxymorphone. Id. In addition to the above-listed treatments, neuropathic pain, which can be difficult to treat, has also been treated with anti-epileptics (e.g., gabapentin, carbamazepine, valproic acid, topiramate, phenytoin), NMDA antagonists (e.g., ketamine, dextromethorphan), topical lidocaine (for post-herpetic neuralgia), and tricyclic antidepressants (e.g., fluoxetine, sertraline and amitriptyline).
UI is uncontrollable urination, generally caused by bladder-detrusor-muscle instability. UI affects people of all ages and levels of physical health, both in health care settings and in the community at large. Physiologic bladder contraction results in large part from acetylcholine-induced stimulation of post-ganglionic muscarinic-receptor sites on bladder smooth muscle. Treatments for UI include the administration of drugs having bladder-relaxant properties, which help to control bladder-detrusor-muscle overactivity.
None of the existing commercial drug treatments for UI has achieved complete success in all classes of UI patients, nor has treatment occurred without significant adverse side effects.
Treatment of ulcers typically involves reducing or inhibiting the aggressive factors. For example, antacids such as aluminum hydroxide, magnesium hydroxide, sodium bicarbonate, and calcium bicarbonate can be used to neutralize stomach acids. Antacids, however, can cause alkalosis, leading to nausea, headache, and weakness. Antacids can also interfere with the absorption of other drugs into the blood stream and cause diarrhea.
H2 antagonists, such as cimetidine, ranitidine, famotidine, and nizatidine, are also used to treat ulcers. H2 antagonists promote ulcer healing by reducing gastric acid and digestive-enzyme secretion elicited by histamine and other H2 agonists in the stomach and duodenum. H2 antagonists, however, can cause breast enlargement and impotence in men, mental changes (especially in the elderly), headache, dizziness, nausea, myalgia, diarrhea, rash, and fever.
H*, K+ - ATPase inhibitors such as omeprazole and lansoprazole are also used to treat ulcers, H*, K+ - ATPase inhibitors inhibit the production of enzymes used by the stomach to secrete acid. Side effects associated with H*, K+ - ATPase inhibitors include nausea, diarrhea, abdominal colic, headache, dizziness, somnolence, skin rashes, and transient elevations of plasma activities of aminotransferases.
Inflammatory-bowel disease (“IBD”) is a chronic disorder in which the bowel becomes inflamed, often causing recurring abdominal cramps and diarrhea. The two types of IBD are Crohn’s disease and ulcerative colitis.
Crohn’s disease, which can include regional enteritis, granulomatous ileitis, and ileocolitis, is a chronic inflammation of the intestinal wall. Crohn’s disease occurs equally in both sexes and is more common in Jews of eastern-European ancestry. Most cases of Crohn’s disease begin before age 30 and the majority start between the ages of 14 and 24. The disease typically affects the full thickness of the intestinal wall. Generally the disease affects the lowest portion of the small intestine (ileum) and the large intestine, but can occur in any part of the digestive tract.
Cramps and diarrhea, side effects associated with Crohn’s disease, can be relieved by anticholinergic drugs, diphenoxylate, loperamide, deodorized opium tincture, or codeine.
When Crohn’s disease causes the intestine to be obstructed or when abscesses or fistulas do not heal, surgery can be necessary to remove diseased sections of the intestine. Surgery, however, does not cure the disease, and inflammation tends to recur where the intestine is rejoined. In almost half of the cases a second operation is needed. The Merck Manual of Medical Information 528-530 (R. Berkow ed., 1997).
Ulcerative colitis is a chronic disease in which the large intestine becomes inflamed and ulcerated, leading to episodes of bloody diarrhea, abdominal cramps, and fever. Ulcerative colitis usually begins between ages 15 and 30; however, a small group of people have their first attack between ages 50 and 70. Unlike Crohn’s disease, ulcerative colitis never affects the small intestine and does not affect the full thickness of the intestine. The disease usually begins in the rectum and the sigmoid colon and eventually spreads partially or completely throughout the large intestine. The cause of ulcerative colitis is unknown.
Treatment of ulcerative colitis is directed to controlling inflammation, reducing symptoms, and replacing lost fluids and nutrients. Anticholinergic drugs and low doses of diphenoxylate or loperamide are administered for treating mild diarrhea. For more intense diarrhea higher doses of diphenoxylate or loperamide, or deodorized opium tincture or codeine are administered.
Irritable-bowel syndrome (“IBS”) is a disorder of motility of the entire gastrointestinal tract, causing abdominal pain, constipation, and/or diarrhea. IBS affects three-times more women than men. In IBS, stimuli such as stress, diet, drugs,
hormones, or irritants can cause the gastrointestinal tract to contract abnormally. During an episode of IBS, contractions of the gastrointestinal tract become stronger and more frequent, resulting in the rapid transit of food and feces through the small intestine, often leading to diarrhea. Cramps result from the strong contractions of the large intestine and increased sensitivity of pain receptors in the large intestine.
Treatment of IBS typically involves modification of an IBS-patient’s diet. Often it is recommended that an IBS patient avoid beans, cabbage, sorbitol, and fructose. A low-fat, high-fiber diet can also help some IBS patients. Regular physical activity can also help keep the gastrointestinal tract functioning properly. Drugs such as propantheline that slow the function of the gastrointestinal tract are generally not effective for treating IBS. Antidiarrheal drugs, such as diphenoxylate and loperamide, help with diarrhea. The Merck Manual of Medical Information 525-526 (R. Berkow ed., 1997).
International publication no. WO 98/31677 describes a class of aromatic amines derived from cyclic amines that are useful as antidepressant drugs.
International publication no. WO 01/027107 describes a class of heterocyclic compounds that are sodium/proton exchange inhibitors.
International publication no. WO 99/37304 describes substituted oxoazaheterocycly compounds useful for inhibiting factor Xa.
U.S. Patent No. 6,248,756 to Anthony et al. and international publication no. WO 97/38665 describe a class of piperidine-containing compounds that inhibit farnesyl-protein transferase (Ftase).
International publication no. WO 98/31669 describes a class of aromatic amines derived from cyclic amines useful as antidepressant drugs.
International publication no. WO 97/28140 describes a class of piperidines derived from l-(piperazin-l-yl)aryl(oxy/amino)carbonyl-4-aryl-piperidine that are useful as 5-HT1Db receptor antagonists.
International publication no. WO 97/38665 describes a class of piperidine containing compounds that are useful as inhibitors of farnesyl-protein transferase.
U.S. Patent No. 4,797,419 to Moos et al. describes a class of urea compounds for stimulating the release of acetylcholine and useful for treating symptoms of senile cognitive decline.
U.S. Patent No. 5,891,889 describes a class of substituted piperidine compounds that are useful as inhibitors of farnesyl-protein transferase, and the farnesylation of the oncogene protein Ras.
U.S. Patent No. 6,150,129 to Cook et al. describes a class of dinitrogen heterocycles useful as antibiotics.
U.S. Patent No. 5,529,998 to Habich et al. describes a class of benzooxazolyl-and benzothiazolyloxazolidones useful as antibacterials.
International publication no. WO 01/57008 describes a class of 2-benzothiazolyl urea derivatives useful as inhibitors of serine/threonine and tyrosine kinases.
International publication no. WO 02/08221 describes aryl piperazine compounds useful for treating chronic and acute pain conditions, itch, and urinary incontinence.
International publication no. WO 00/59510 describes aminopyrimidines useful as sorbitol dehydrogenase inhibitors.
Japanese patent application no. 11-199573 to Kiyoshi et al. describes benzothiazole derivatives that are neuronal 5HT3 receptor agonists in the intestinal canal nervous system and useful for treating digestive disorders and pancreatic insufficiency.
German patent application no 199 34 799 to Rainer et al. describes a chiral-smectic liquid crystal mixture containing compounds with 2 linked (hetero)aromatic rings or compounds with 3 linked (hetero)aromatic rings.
M. Chu-Moyer et al, J. Med. Chem. 45:511-528 (2002) describes heterocycle-substituted piperazino-pyrimidines useful as sorbitol dehydrogenase inhibitors.
B.G. Khadse etal., Bull. Haff. Instt. l£3J:27-32 (1975) describes 2-(N4-substituted-N-piperazinyl) pyrido(3,2-J)thiazoles and 5-nitro-2-(N-substituted-iV;-piperazinyl)benzthiazoles useful as anthelmintic agents.
U.S. Patent Application Publication No. US 2004/0186111 Al and International publication no. WO 2004/058754 Al describe a class of compounds that are useful for treating pain.
U.S. Patent Application Publication No. US 2006/0199824-A1 and International publication no. WO 2005/009987 Al describe a class of compounds that are useful for treating pain.
U.S. Patent Application Publication No. US 2006/0128717 Al and International publication no. WO 2005/009988 Al describe a class of compounds that are useful for treating pain.
There remains, however, a clear need in the art for new drugs useful for treating or preventing pain, UI, an ulcer, IBD, and IBS. Citation of any reference in Section 2 of this application is not to be construed as an admission that such reference is pR10r art to the present application.
3. SUMMARY OF THE INVENTION
The invention encompasses compounds of formula I:
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where
X is O, S, N-CN, N-OH, or N-OR10;
W is N or C;
the dashed line denotes the presence or absence of a bond, and when the dashed line denotes the presence of a bond or W is N then R4 is absent, otherwise R4 is -H, -OH, -OCF3, -halo, -(C1-C6)alkyl, -CH2OH, -CH2C1, -CH2Br, -CH2I, -CH2F, -CH(halo)2, -CF3, -OR10, -SR10, -COOH, -COOR10, -C(O)R10, -C(O)H, -OC(O)R10, -OC(O)NHR10, -NHC(O)R13. -CON(R13)2) -S(O)2R10, or -NO2;
R10 is -(C1-C4)alkyl;
each R13 is independently -H, -(C1-C4)alkyl, -(C1-C4)alkenyl, -(C1-C4)alkynyl, or -phenyl;
(FORMULA REMOVED)
c is the integer 0,1, or 2; Y1, Y2, Y3 are independently C, N, or O;
wherein no more than one of Y1, Y2, or Y3 can be O, and for each Y1, Y2, and Y3 that is N, the N is bonded to one R21 group, and for each Y1, Y2, and Y3 that is C, the C is
bonded to two R20 groups, provided that there are no more than a total of two (C1-C6)alkyl groups substituted on all of Y1, Y2, and Y3;
R12a and R12b are independently -H or -(C1-C6)alkyl;
E is =O, =S, =CH(C1-C5)alkyl, =CH(C1-C5)alkenyl, -NH(C1-C6)alkyl, or =N-OR20;
R1 is -H, -halo, -(d-C4)alkyl, -NO2, -CN, -OH, -OCH3, -NH2, -C(halo)3, -CH(halo)2, -CH2(halo), -OC(halo)3, -OCH(halo)2, or -OCH2(halo);
each R2 is independently:
(a) -halo, -OH, -O(C1-C4)alkyl, -CN, -NO2, -NH2, -(C1-C1O)alkyl, -(C2-
C10)alkenyl, -(C2-C10)alkynyl, -phenyl, or
(b) a group of formula Q;
wherein Q is
(FORMULA REMOVED)
Z1 is -H, -OR7, -SR7, -CH2-OR7, -CH2-SR7, -CH2-N(R2o)2, or -halo;
Z2 is -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -CH2-OR7, -phenyl, or -halo;
each Z3 is independently -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, or -phenyl;
Z4 is -H, -OH, -OR20, -(C1-C6)alkyl, or -N(R2O)2;
J is -OR20, -SR20, -N(R2O)2, or -CN;
9
provided that at least one R2 group is a group of formula Q, and provided that when Z1 is -OR7 or -SR7, then Z2 is not -halo; each R3 is independently:
(a) -H, CH2OR7, or (C1-C6)alkyl; or
(b) two R3 groups together form a (C2-C6)bridge, which is unsubstituted or substituted with 1, 2 or 3 independently selected Rg groups, and which bridge optionally contains -HC=CH- within the (C2-C6)bridge; or
(c) two R3 groups together form a -CH2-N(Ra)-CH2- bridge, a
(FORMULA REMOVED)
Ra is selected from -H, -(C1-C6)alkyl, -(C3-C8)cycloalkyl, -CH2-C(O)-Rc, -(CH2)-C(O)-ORc, -(CH2)-C(O)-N(Rc)2, -(CH2)2-O-Rc, -(CH2)2-S(O)2-N(Rc)2) or -(CH2)2-N(RC)S(O)2-Rc;
Rb is selected from:
(a) -H, -(C1-C6)alkyl, -(C3-C8)cycloalkyl, -(3- to 7-
membered)heterocycle, -N(Rc)2, -N(Rc)-(C3-C8)cycloalkyl, or -N(Rc)-(3- to 7-
membered)heterocycle; or
(b) -phenyl, -(5- or 6-membered)heteroaryl, -N(Rc)-phenyl, or -N(Rc)-(5-
to 10-membered)heteroaryl, each of which is unsubstituted or substituted with 1, 2 or 3
independently selected R7 groups;
each Rc is independently selected from -H or -(C1-C4)alkyl;
each R7 is independently -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-C8)cycloalkyl, -(C5-C8)cycloalkenyl, -phenyl, -(C1-C6)haloalkyl, -(C1-C6)hydroxyalkyl, -(C1-C6)alkoxy(C1-C6)alkyl, -(C1-C6)alkyl-N(R2O)2, or -CON(R2O)2;
each R8 and R9 is independently!
(a) -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-C8)cycloalkyl, -(C5-C8)cycloalkenyl, or -phenyl, each of which is unsubstituted or substituted with 1 or 2 -OH groups; or
(b) -H, -CH2C(halo)3,-C(halo)3, -CH(halo)2, -CH2(halo), -OC(halo)3, -OCH(halo)2) -OCH2(halo), -SC(halo)3, -SCH(halo)2, -SCH2(halo), -CN, -O-CN, -OH, -halo, -N3, -NO2, -CH=NR7, -N(R7)2, -NR7OH, -OR7, -C(O)R7, -C(O)OR7, -OC(O)R7, -OC(O)OR7, -SR7, -S(O)R7, or -S(O)2R7;
each R11 is independently -CN, -OH, -(C1-C6)alkyl, -(C2-C6)alkenyl, -halo, -N3, -NO2, -N(R7)2, -CH=NR7, -NRTOH, -OR7, -C(O)R7, -C(O)OR7, -OC(O)R7, or -OC(O)OR7;
each R14 is independently -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-C8)cycloalkyl, -(C5-C8)cycloalkenyl, -(C1-C6)alkoxy-(C1-C6)alkyl, -phenyl, -C(halo)3, -CH(halo)2, -CH2(halo), -(3- to 7-membered)heterocycle, -(C1-C6)haloalkyl, -(C2-C6)haloalkenyl, -(C2-C6)haloalkynyl, -(C2-C6)hydroxyalkenyl, -(C2-C6)hydroxyalkynyl, -(C1-C6)alkoxy(C2-C6)alkyl, -(C1-C6)alkoxy(C2-C6)alkenyl, -(Cr C6)alkoxy(C2-C6)alkynyl, -(C1-C6)alkoxy(C3-C8)cycloalkyl)-CN, -OH, -halo, -OC(halo)3, -N3, -NO2, -CH=NR7, -N(R7)2, -NR7OH, -OR7, -SR7, -O(CH2)bOR7, -O(CH2)bSR7, -O(CH2)bN(R7)2, -N(R7)(CH2)bOR7, -N(R7)(CH2)bSR7, -N(R7)(CH2)bN(R7)2, -N(R7)COR7, -C(O)R7, -C(O)OR7, -OC(O)R7, -OC(O)OR7, -S(O)R7, or -S(O)2R7, -S(O)2N(R7)2, -SO2C(halo)3, SO2(3-to 7- rnembered)heterocycle, -CON(R7)2, -(C1-C5)alkyl-C=NOR7, -(C1-C5)alkyl-C(O)-N(R7)2, -(C1-C6)alkyl-NHSO2N(R7)2, or -(C1-C6)alkyl-C(=NH)-N(R7)2;
each R2o is independently -H, -(C1-C6)alkyl, or -(C3-C8)cycloalkyl;
each R21 is independently -H, -(C1-C6)alkyl,
(FORMULA REMOVED)
each halo is independently -F, -C1, -Br, or -I;
n is the integer 1, 2, or 3;
p is the integer 1 or 2
each b is independently the integer 1 or 2;
q is the integer 0,1, 2, 3, or 4;
r is the integer 0,1,2, 3,4, 5, or 6;
s is the integer 0, 1, 2, 3,4, or 5;
t is the integer 0,1,2, or 3; and
m is the integer 0,1, or 2.
Compounds of formula I are potent at TRPVl receptors, and are highly soluble in aqueous solutions at either pH 6.8 or pH 1.2.
A compound of formula I, or a pharmaceutically acceptable derivative thereof, is useful for treating or preventing pain, UI, an ulcer, IBD, or IBS (each being a “Condition”) in an animal.
The invention also relates to compositions comprising an effective amount of a compound of formula I, or a pharmaceutically acceptable derivative thereof, and a pharmaceutically acceptable carrier or excipient. The compositions are useful for treating or preventing a Condition in an animal.
The invention further relates to methods for treating a Condition comprising administering to an animal in need thereof an effective amount of a compound of formula I, or a pharmaceutically acceptable derivative thereof.
The invention further relates to use of a compound of formula I in the manufacture of a medicament for treating and/or preventing a Condition.
The invention further relates to methods for preventing a Condition comprising administering to an animal in need thereof an effective amount of a compound of formula I, or a pharmaceutically acceptable derivative thereof.
The invention still further relates to methods for inhibiting Transient Receptor Potential Vanilloid 1 (“TRPVl,” formerly known as Vanilloid Receptor 1 or VRl) function in a cell, comprising contacting a cell capable of expressing TRPVl with an effective amount of a compound of formula I, or a pharmaceutically acceptable derivative thereof.
The invention still further relates to a method for preparing a composition comprising the step of admixing a compound of formula I, or a pharmaceutically acceptable derivative thereof, and a pharmaceutically acceptable carrier or excipient.
The invention still further relates to a kit comprising a container containing an effective amount of a compound of formula I, or a pharmaceutically acceptable derivative thereof.
Preferred compounds of formula I are compounds of formula II:
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where the dashed line, W, X, Ari, Ar2, R3, R4, R20, and m are as defined above for compounds of formula I, wherein Q is
(FORMULA REMOVED)
Zi is -OH, -SH, -N(R2O)2, -CH2-OH, -CH2-SH, or -CH2-N(R2O)2;
Z2 is -H, -CH3, or -CH2-OR7;
each Z3 is independently -H or -CH3; and
J is -OH, -SH, or -NCR20)2.
Compounds of formula II are highly soluble in aqueous solutions at either pH 6.8 or pH1.2, are very potent at the TRPV1 receptor, have good bioavailability, and have a good therapeutic index.
Preferred compounds of formula II are compounds of formula III:
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where the dashed line, W, X, Ari, Ar2, R3, R4, and m are as defined above for compounds of formula I, wherein Ar1 is:
(FORMULA REMOVED)
R1 is -C1, -F, or -CF3; wherein Ar2 is:
(FORMULA REMOVED)
R14 is -H, -C1, -F, -Br, -OCF3, -(C1-C6)alkyl, -SO2CF3) -SO2(C1-C6)alkyl, -OCH3, -OCH2CH3, or -OCH(CH3)2, and preferably is -CF3, -OCF3, -C1, or -F;
R14’ is -H, -C1, -F, -Br, -CH3, -CH2CH3, -OCH3) -OCF3, or-OCH2CH3; and
each Rg and R9 is independently -H, -C1, -Br, -F, -CH3, -OCH3, -OCH2CH3, -CF3, -OCF3, iso-propyl, or tert-butyl.
Compounds of formula III are highly soluble in aqueous solutions at either pH 6.8 or pH 1.2, are exceptionally potent at TRPV1 receptors, have excellent bioavailability, have a high therapeutic index, and are believed to be highly efficaC10us in animals for the treatment of pain.
The invention can be understood more fully by reference to the following detailed description and illustrative examples, which are intended to exemplify non-limiting embodiments of the invention.
4. BRIEF DESCRIPTION OF THE FIGURES
Fig 1. 96-well plate with different agonist solutions (Agonist Plate). Seven different sulfuric acid solutions, or agonist solutions, with different sulfuric acid (H2SO4) concentrations (of from 15.0 mM to 18 mM as indicated) were used for the pH assay as indicated. For the wells in row A, measuring buffer alone was used. The final
concentration of sulfuric acid in the wells for each row, after a 1:4 dilution of the agonist solution, is also indicated in each row in parenthesis.
Fig 2. pH dependent Ca2+responses in TRPV1/CHO cells. Ca2+influx into TRPV1/CHO cells as measured by Fura-2 AM fluorescence is indicated by the graph within each rectangular field. The graph presents the fluorescence intensity over time starting from the addition of agonist solution. Each rectangular field presents one experiment performed in one well of a 96-well plate. Each row presents six experiments performed at the same final sulfuric acid concentration; the final sulfuric acid concentration is indicated at the left. Actual pH values were measured after the experiment and are indicated above the graph. No antagonists were added to the cell culture. Final sulfuric acid concentrations of 3.2 and 3.3 mM produced an appropriate Ca2+ response and were selected for subsequent assays. These final sulfuric acid concentrations can be obtained by 1:4 dilutions of agonist solution with sulfuric acid concentrations of 16.0 mM or 16.5 mM, respectively (see Fig. 1).
Fig 3. (A) A 96-well plate with two different sulfuric acid concentrations. Wells in columns 1 to 6 had one final sulfuric acid concentration; wells in columns 7 to 12 had a different final sulfuric acid concentration. The final sulfuric acid concentration was reached by 1:4 dilution of two different agonist solutions with sulfuric acid concentrations of X mM and (X + 0.5) mM, respectively. In the experiment described in Section 2 of Protocol 2, X was determined to be 16 mM. (B) A 96-well plate with different test compound, or antagonist, concentrations indicated in nM. Only one kind of test compound was applied per 96-well plate. Since two different sulfuric acid concentrations were used (columns 1-6 vs. columns 7-12), seven wells were tested for each combination of test compound concentration and agonist solution (e.g., wells Al, Bl, C1, El, Fl, Gl, and HI were tested for test compound concentration 0.977 nM and agonist solution with sulfuric acid solution X mM). The wells in row D did not include an antagonist in order to measure the maximal Ca2+ response.
DETAILED DESCRIPTION OF THE INVENTION COMPOUNDS OF FORMULA I
The invention encompasses compounds of formula I:
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where W, X, Ar1, Ar2, R3, R4, R20, and m are as defined above for compounds of formula I.
Certain embodiments of formula I are presented below.
In one embodiment, a compound of formula I is a pharmaceutically acceptable derivative of a compound of formula I.
In another embodiment, a compound of formula I is a compound of formula I whererein the derivative is a pharmaceutically acceptable salt.
In another embodiment, a compound of formula I is a pharmaceutically acceptable salt of a compound of formula I.
In another embodiment, Ar1 is a pyridyl group.
In another embodiment, Ar1 is a pyrimidinyl group.
In another embodiment, Ar1 is a pyrazinyl group.
In another embodiment, Ar1 is pyridazinyl group.
In another embodiment, W is C.
In another embodiment, W is N.
In another embodiment, X is O.
In another embodiment, X is S.
In another embodiment, X is N-CN.
In another embodiment, X is N-OH.
In another embodiment, X is N-OR10. In another embodiment, Ar2 is a benzoimidazolyl group. In another embodiment, Ar2 is a benzothiazolyl group. In another embodiment, Ar2 is a benzooxazolyl group. In another embodiment, Ar2 is
(FORMULA REMOVED)
In another embodiment, Ar2 is
(FORMULA REMOVED)
In another embodiment, r2 is
(FORMULA REMOVED)
In another embodiment, Ar2 is
(FORMULA REMOVED)
In another embodiment, r2 is
(FORMULA REMOVED)
In another embodiment, Ar2 is
(FORMULA REMOVED)
In another embodiment, Ar2 is
(FORMULA REMOVED)
In another embodiment, Ar2 is
(FORMULA REMOVED)
In another embodiment, n or p is 1.
In another embodiment, n or p is 2.
In another embodiment, n is 3.
In another embodiment, m is 2.
In another embodiment, each R3 is independently -H, or (C1-C6)alkyl.
In another embodiment, two R3 groups together form a (C2-C6)bridge, which is unsubstituted or substituted with 1, 2 or 3 independently selected Rg groups, and which bridge optionally contains -HC=CH- within the (C2-C6)bridge.
In another embodiment, two R3 groups together form a (C2-C6)bridge, which is unsubstituted or substituted with an Rg group, and which bridge optionally contains -HC=CH- within the (C2-C6)bridge.
In another embodiment, two R3 groups together form a (C2-C3)bridge, which is unsubstituted or substituted with an Rg group, and which bridge optionally contains -HC=CH- within the (C2-C3)bridge.
In another embodiment, two R3 groups together form a (C2-C3)bridge, which is unsubstituted and which bridge optionally contains -HC=CH- within the (C2-C3)bridge.
In another embodiment, two R3 groups together form a (C2)bridge, a -HC=CH-bridge, or a (^bridge each of which is unsubstituted.
In another embodiment, two R3 groups together form a (C2-C6)bridge, which is unsubstituted or substituted with 1, 2 or 3 independently selected Rg groups, which bridge optionally contains -HC=CH- within the (C2-C6)bridge, and which bridge joins positions 2 and 6 of the piperidine, 1,2,3,6-tetrahydropyridine or piperazine ring.
In another embodiment, two R3 groups together form a (C2-C6)bridge, which is unsubstituted or substituted with an Rg group, which bridge optionally contains -HC=CH- within the (C2-C6)bridge, and which bridge joins positions 2 and 6 of the piperidine, 1,2,3,6-tetrahydropyridine or piperazine ring.
In another embodiment, two R3 groups together form a (C2-C3)bridge, which is unsubstituted or substituted with an Rg group, which bridge optionally contains -HC=CH- within the (C2-C3)bridge, and which bridge joins positions 2 and 6 of the piperidine, 1,2,3,6-tetrahydropyridine or piperazine ring.
In another embodiment, two R3 groups together form a (C2-C3)bridge, which is unsubstituted, which bridge optionally contains -HC=CH- within the (C2-C3)bridge, and which bridge joins positions 2 and 6 of the piperidine, 1,2,3,6-tetrahydropyridine or piperazine ring.
In another embodiment, two R3 groups together form a (C2)bridge, a -HC=CH-bridge, or a (C3)bridge each of which is unsubstituted, and which bridge joins positions 2 and 6 of the piperidine, 1,2,3,6-tetrahydropyridine or piperazine ring.
In another embodiment, two R3 groups together form a -CH2-N(Ra)-CH2- bridge (Bl),a
(FORMULA REMOVED)
wherein Ra is selected from -H, -(C1-C6)alkyl, -(C3-C8)cycloalkyl, -CH2-C(O)-Rc, -(CH2)-C(O)-ORc, -(CH2)-C(O)-N(Rc)2) -(CH2)2-O-Rc, -(CH2)2-S(O)2-N(Rc)2, or -(CH2)2-N(Rc)S(O)2-Rc;
Rb is selected from:
(a) -H, -(C1-C6)alkyl, -(C3-C8)cycloalkyl, -(3- to 7-
membered)heterocycle, -N(Rc)2, -N(Rc)-(C3-C8)cycloalkyl, or -N(Rc)-(3- to 7-
membered)heterocycle; or
(b) -phenyl, -(5- or 6-membered)heteroaryl, -N(Rc)-phenyl, or -N(Rc)-(5-
to 10-membered)heteroaryl, each of which is unsubstituted or substituted with 1, 2 or 3
independently selected R7 groups; and
each Rc is independently selected from -H or -(C1-C4alkyl;
In another embodiment, the Bl, B2, or B3 bridge joins positions 2 and 6 of the piperidine, 1,2,3,6-tetrahydropyridine or piperazine ring.
In another embodiment, two R3 groups form a bicyclo group to give one of the following structures,
(FORMULA REMOVED)
In another embodiment, m is 1. In another embodiment, m is 0. In another embodiment, s or q is 0. In another embodiment, s or q is 1. In another embodiment, s or q is 2.
In another embodiment, R1 is -H.
In another embodiment, R1 is -halo.
In another embodiment, R1 is -CI.
In another embodiment, R1 is -F.
In another embodiment, R1 is -CH3.
In another embodiment, R1 is -NO2.
In another embodiment, R1 is -CN.
In another embodiment, R1 is -OH.
In another embodiment, R1 is -OCH3.
In another embodiment, R1 is -NH2.
In another embodiment, R1 is -C(halo)3.
In another embodiment, R1 is -CF3.
In another embodiment, R1 is -CH(halo)2.
In another embodiment, R1 is -CH2(halo).
In another embodiment, Ar1 is a pyridyl group and n is 1.
In another embodiment, Ar1 is a pyrazinyl group and p is 1.
In another embodiment, Ar1 is a pyrimidinyl group and p is 1.
In another embodiment, Ar1 is a pyridazinyl group and p is 1.
In another embodiment, when n and p are 1, then R2 must be Q.
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, J is -OR20, -SR20 or -N(R20)2.
In another embodiment, J is -OR20.
In another embodiment, J is -OH.
In another embodiment, J is -CN.
In another embodiment, Z1 is -H.
n another embodiment, Z1 is -OH.
In another embodiment, Z\ is -OCH3. In another embodiment, Z1 is -CH2OH. In another embodiment, Z2 is -CH2-OR7. In another embodiment, Z2 is -CH2OH.
In another embodiment, Z2 is -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -phenyl, or -halo.
In another embodiment, Z2 is -H.
In another embodiment, Z2 is -CH3.
In another embodiment, Z3 is -H.
In another embodiment, Z3 is -CH3.
In another embodiment, Z4 is -H.
In another embodiment, Z4 is -(C1-C6)alkyl.
In another embodiment, Z4 is -N(R2o)2-
In another embodiment Z4 is -OR20.
In another embodiment, Z4 is -OH.
In another embodiment, Q is
(FORMULA REMOVED)

In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, Q is
(FORMULA REMOVED)

In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, m is 1 and R3 is -(C1-C6)alkyl.
In another embodiment, m is 1 and R3 is -CH3.
In another embodiment, m is 0.
In another embodiment, R4 is -OH.
In another embodiment, R4 is -OCF3
In another embodiment, R4 is -halo.
In another embodiment, R4 is -F.
n another embodiment, R4 is -CI.
In another embodiment, R4 is -(C1-C6)alkyl.
In another embodiment, R4 is -CH3.
In another embodiment, R4 is -CH2OH.
In another embodiment, R4 is -CH2CI.
In another embodiment, R4 is -CH2Br.
In another embodiment, R4 is -CH2I.
In another embodiment, R4 is -CH2F.
In another embodiment, R4 is -CH(halo)2.
In another embodiment, R4 is -CF3.
In another embodiment, R4 is -NO2.
In another embodiment, R4 is -OR10.
In another embodiment, R4 is -SR10.
In another embodiment, R4 is -C(O)R10.
In another embodiment, R4 is -COOH.
In another embodiment, R4 is -C(O)H.
In another embodiment, R4 is -COOR10-
In another embodiment, R4 is -OC(O)R10.
In another embodiment, R4 is -SO2R10.
In another embodiment, R4 is -OC(O)NHR10.
In another embodiment, R4 is -NHC(O)R13.
In another embodiment, R4 is -CON(R13)2.
In another embodiment, each R20 is independently -H or -(C1-C6)alkyl.
In another embodiment, each R2o is -H.
In another embodiment, each R20 is -(C1-C6)alkyl.
In another embodiment, Ar2 is a benzothiazolyl, benzoimidazolyl, or benzooxazolyl group; and at least one of R8 and R9 is -H.
In another embodiment, Ar2 is a benzothiazolyl, benzoimidazolyl, or benzooxazolyl group; and at least one of R8 and R9 is not -H.
In another embodiment, Ar2 is a benzothiazolyl, benzoimidazolyl, or benzooxazolyl group; and at least one of Rg and R9 is -halo.
In another embodiment, Ar2 is
(FORMULA REMOVED)
s is 1 and R14 is -(C1-C6)alkyl, -halo, -C(halo)3, -OC(halo)3, -OR7, -N(R7)2, -SO2R7, or -SO2C(halo)3.
In another embodiment, Ar2 is
(FORMULA REMOVED)
s is 2, and each R14 group independently is -(C1-C6)alkyl, -halo, -C(halo)3, -OC(halo)3, -OR7, -N(R7)2, -SO2R7, or -SO2C(halo)3.
In another embodiment, R4 is -halo, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OR20.
In another embodiment, R4 is -halo, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OR20 and Zi is -OR7.
In another embodiment, R4 is -halo, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OR20 and X\ is -CH2OR7.
In another embodiment, R4 is -halo, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein Z4 is -OR20.
In another embodiment, R4 is -halo, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OH.
In another embodiment, R4 is -halo, n or p is 1, R2 is Q, wherein Q is

(FORMULA REMOVED)
wherein J is -OH and Z1 is -OH.
In another embodiment, R4 is -halo, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OH and Z1 is -CH2OH.
In another embodiment, R4 is -F, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OH and Z1 is -OH.
In another embodiment, R4 is -F, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OH and Z1 is -CH2OH.
In another embodiment, R1 is -halo, R4 is -halo, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OR20.
In another embodiment, Rt is -halo, R4 is -halo, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OR20 and Z1 is OR7.
In another embodiment, R1 is -halo, R4 is -halo, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OR20 and Z1 is -CH2OR7.
In another embodiment, R1 is -halo, R4 is -halo, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein Z4 is -OR20.
In another embodiment, R1 is -C1, R4 is -F, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OR20-
In another embodiment, R1 is -C1, R4 is -F, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OR20 and Z1 is -OR7.
In another embodiment, R1 is -C1, R4 is -F, n or p is 1, R2 is Q, wherein Q is

(FORMULA REMOVED)
wherein J is -OR20 and Z1 is -CH2OR7.
In another embodiment, R1 is -C1, R4 is -F, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein Z4 is -OR20.
In another embodiment, R1 is -C1, R4 is -F, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OH.
In another embodiment, R1 is -C1, R4 is -F, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OH and Z1 is -OH.
In another embodiment, R1 is -C1, R4 is -F, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OH and Z1 is -CH2OH.
In another embodiment, Ar1 is a pyridyl group, wherein n is 1, and R2 is Q. In another embodiment, Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH.
In another embodiment, Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OR20, and Z1 is -OR7.
In another embodiment, Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, and Z1 is -OH.
In another embodiment, Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OR20, and Z1 is -CH2OR7.
In another embodiment, Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, and Z1 is -CH2OH.
In another embodiment, Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein Z4 is -OR20.
In another embodiment, R1 is -halo, R4 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OR20, Z1 is -OR7.
In another embodiment, R1 is -halo, R4 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -OH.
In another embodiment, R1 is -halo, R4 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OR20, Z1 is -CH2OR7.
In another embodiment, R1 is -halo, R4 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -CH2OH.
In another embodiment, R1 is -halo, R4 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -OH, Ar2 is benzothiazolyl, wherein at least one of R8 or R9 is not -H.
In another embodiment, R1 is -halo, R4 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -CH2OH, Ar2 is benzothiazolyl, wherein at least one of Rs or R9 is not -H.
In another embodiment, R1 is -halo, R4 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -OH, Ar2 is benzooxazolyl, wherein at least one of R8 or R9 is not -H.
In another embodiment, R1 is -halo, R4 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -CH2OH, Ar2 is benzooxazolyl, wherein at least one of R8 or R8 is not -H.
In another embodiment, R1 is -halo, R4 is -halo, and M is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -OH, Ar2 is benzoimidazolyl, wherein at least one of R8 or R9 is not -H.
In another embodiment, R1 is -halo, R4 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -CH2OH, Ar2 is benzoimidazolyl, wherein at least one of R8 or R9 is not -H.
In another embodiment, R1 is -halo, R4 is -halo, and Arj is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -OH, Ar2 is phenyl, wherein s is 0 or 1.
In another embodiment, R1 is -halo, R4 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -CH2OH, Ar2 is phenyl, wherein s is 0 or 1.
In another embodiment, R1 is -halo, R4 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -OH, Ar2 is phenyl, wherein s is 2. In another embodiment, R1 is -halo, R4 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -CH2OH, Ar2 is phenyl, wherein s is 2.
In another embodiment, the dashed line is a double bond, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OR20.
In another embodiment, the dashed line is a double bond, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OR20 and Z1 is OR7.
In another embodiment, the dashed line is a double bond, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OR20 and Z\ is -CH2OR7.
In another embodiment, the dashed line is a double bond, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein Z4 is -OR20.
In another embodiment, the dashed line is a double bond, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OH.
In another embodiment, the dashed line is a double bond, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OH and Z1 is -OH.
In another embodiment, the dashed line is a double bond, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OH and Z1 is -CH2OH.
In another embodiment, the dashed line is a double bond, R1 is -halo, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OH.
In another embodiment, the dashed line is a double bond, R1 is -halo, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OH and Z1 is -OH.
In another embodiment, the dashed line is a double bond, R1 is -halo, n or p is 1, R2 is Q, wherein Q is
(FORMULA REMOVED)
wherein J is -OH and Z1 is -CH2OH.
In another embodiment, the dashed line is a double bond, R1 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z\ is -OH.
In another embodiment, the dashed line is a double bond, R1 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -CH2OH.
In another embodiment, the dashed line is a double bond, R1 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -OH Ar2 is benzothiazolyl, wherein at least one of R8 or R9 is not a -H.
In another embodiment, the dashed line is a double bond, R1 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -CH2OH, Ar2 is benzothiazolyl, wherein at least one of R8 or R9 is not a -H.
In another embodiment, the dashed line is a double bond, R1 is -halo, and Ar1 is a pyridyl group, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -OH Ar2 is benzooxazolyl, wherein at least one of Rs or R9 is not a -H.
In another embodiment, the dashed line is a double bond, R1 is -halo, and Ar1 is a pyridyl group, wherein n is 1, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z\ is -CH2OH, Ar2 is benzooxazolyl, wherein at least one of R» or R9 is not a -H.
In another embodiment, the dashed line is a double bond, R1 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -OH, Ar2 is benzoimidazolyl, wherein at least one of R8 or R9 is not a -H.
In another embodiment, the dashed line is a double bond, R1 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -CH2OH, Ar2 is benzoimidazolyl, wherein at least one of R8 or R9 is not a -H.
In another embodiment, the dashed line is a double bond, R1 is -halo, and Art is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -OH Ar2 is phenyl, wherein s is 0 or 1 and R14 is -(C1-C6)alkyl, -halo, -C(halo)3, -OC(halo)3, -OR7, -N(R7)2, -SO2R7, or -SO2C(halo)3) and preferably is -F, -C1, -CF3, or-OCF3.
In another embodiment, the dashed line is a double bond, Rt is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -CH2OH, Ar2 is phenyl, wherein s is 0 or 1 and R14 is -(C1-C6)alkyl, -halo, -C(halo)3, -OC(halo)3, -OR7, -N(R7)2, -SO2R7, or -SO2C(halo)3, and preferably is -F, -C1, -CF3, or -OCF3..
In another embodiment, the dashed line is a double bond, R1 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -OH Ar2 is phenyl, wherein s is 2, and each RH is independently -(C1-C6)alkyl, -halo, -C(halo)3, -OC(halo)3, -OR7, -N(R7)2, -SO2R7, or -SO2C(halo)3, and preferably is -F, -C1, -CF3, or -OCF3..
In another embodiment, the dashed line is a double bond, R1 is -halo, and Ar1 is a pyridyl group, wherein n is 1, R2 is Q, and Q is
(FORMULA REMOVED)
wherein J is -OH, Z1 is -CH2OH, Ar2 is phenyl, wherein s is 2, and each R14 is independently -(C1-C6)alkyl, -halo, -C(halo)3, -OC(halo)3, -OR7, -N(R7)2, -SO2R7, or -SO2C(halo)3, and preferably is -F, -C1, -CF3, or -OCF3.. In another embodiment Q is
(FORMULA REMOVED)
wherein the compound of formula I is racemic. In another embodiment Q is
(FORMULA REMOVED)
wherein the % ee of the R enantiomer is greater than 60%. In another embodiment Q is
(FORMULA REMOVED)
wherein the % ee of the R enantiomer is greater than 70%. In another embodiment Q is
(FORMULA REMOVED)
wherein the % ee of the R enantiomer is greater than 80%. In another embodiment Q is
(FORMULA REMOVED)
wherein the % ee of the R enantiomer is greater than 90%. In another embodiment Q is
(FORMULA REMOVED)
wherein the % ee of the R enantiomer is greater than 99%. In another embodiment Q is
(FORMULA REMOVED)
wherein the % ee of the S enantiomer is greater than 60%. In another embodiment Q is
(FORMULA REMOVED)
wherein the % ee of the S enantiomer is greater than 70%. In another embodiment Q is
(FORMULA REMOVED)
wherein the % ee of the S enantiomer is greater than 80%. In another embodiment Q is
(FORMULA REMOVED)

wherein the % ee of the 5 enantiomer is greater than 90%. In another embodiment Q is
(FORMULA REMOVED)
wherein the % ee of the 5 enantiomer is greater than 99%.
In another embodiment, the invention encompasses compounds of formula 1.4:
(FORMULA REMOVED)
or a pharmaceutically acceptable salt thereof, where
X is O, S, N-CN, N-OH, or N-OR10;
W is N or C;
the dashed line denotes the presence or absence of a bond, and when the dashed line denotes the presence of a bond or W is N then R4 is absent, otherwise R4 is -H, -OH, -OCF3, -halo, -(C1-C6)alkyl, -CH2OH, -CH2C1, -CH2Br, -CH2I, -CH2F, -CH(halo)2, -CF3, -OR10, -SR10, -COOH, -COOR10, -C(O)R10, -C(O)H, -OC(O)R10, -OC(O)NHR10,-NHC(O)R13, -CON(R13)2, -S(O)2R10, or -NO2;
R10 is -(C1-C4)alkyl;
each R11 is independently: -H, -(C1-C4)alkyl, -(C1-C4)alkenyl, -(C1-C4)alkynyl, or -phenyl;
Ar1 is
(FORMULA REMOVED)
c is the integer 0,1, or 2; Y1, Y2, Y3 are independently C, N, or O;
wherein no more than one of Y1, Y2, or Y3 can be O, and for each Y1, Y2, and Y3 that is N, the N is bonded to one R21 group, and for each Y1, Y2, and Y3 that is C, the C is
bonded to two R20 groups, provided that there are no more than a total of two (C\-C6)alkyl groups substituted on all of Y1, Y2, and Y3;
R12a and R12b are independently -H or -(C1-C6)alkyl;
E is =O, =S, =C(C1-C5)alkyl, =C(CrC5)alkenyl, =NH(C1-C6)alkyl, or =N-OR20;
Ri is -H, -halo, -(C1-C4)alkyl, -NO2, -CN, -OH, -OCH3, -NH2, -C(halo)3, -CH(halo)2, -CH2(halo), -OC(halo)3, -OCH(halo)2, or -OCH2(halo);
each R2 is independendy:
(a) -halo, -OH, -O(C,-C4)alkyl, -CN, -NO2, -NH2, -(C1-C10)alkyl, -(C2-
C10)alkenyl, -(C2-C10)alkynyl, -phenyl, or
(b) a group of formula Q;
wherein Q is
(FORMULA REMOVED)
Z1 is -H, -OR7, -SR7, -CH2-OR7, -CH2-SR7, -CH2-N(R2O)2, or -halo;
Z2 is -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -phenyl, or -halo;
each Z3 is independently -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, or -phenyl;
Z4 is -H, -OH, -OR20, -(C1-C6)alkyl, or -NR20;
J is -OR20, -SR20, or -N(R2O)2;
provided that at least one R2 group is a group of formula Q, and provided that when Z1 is -OR7 or -SR7, then Z2 is not -halo;
each R3 is independently:
(a) -H, (C1-C6)alkyl, or two R3 groups form a bicyclo group to give one of the following structures,
(FORMULA REMOVED)
each R7 is independently -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-C8)cycloalkyl, -(C5-C8)cycloalkenyl, -phenyl, -(C1-C6)haloalkyl, -(C1-C6)hydroxyalkyl, -(C1-C6)alkoxy(C1-C6)alkyl, -(C1-C6)alkyl-N(R20)2, or -CON(R2O)2;
each R8 and R9 are independently -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-C8)cycloalkyl, -(C5-C8)cycloalkenyl, -phenyl, -CH2C(halo)3, -C(halo)3, -CH(halo)2, -CH2(halo), -OC(halo)3, -OCH(halo)2, -OCH2(halo), -O-CN, -OH, -halo, -N3, -NO2, -CH=NR7, -N(R7)2, -NR7OH, -OR7, -C(O)R7, -C(O)OR7, -OC(O)R7, -OC(O)OR7, -SR7, -S(O)R7, or -S(O)2R7;
each R11 is independently -CN, -OH, -(C1-C6)alkyl, -(C2-C6)alkenyl, -halo, -N3, -NO2, -N(R7)2, -CH=NR7, -NR7OH, -OR7, -C(O)R7, -C(O)OR7, -OC(O)R7, or -OC(O)OR7;
each R14 is independently -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-C8)cycloalkyl, -(C5-C8)cycloalkenyl,-(C1-C6)alkoxy-(C1-C6)alkyl, -phenyl, C(halo)3, CH(halo)2, CH2(halo), -(3- to 7-membered)heterocycle, -(C1-C6)haloalkyl, -(C2-C6)haloalkenyl, -(C2-C6)haloalkynyl, -(C2-C6)hydroxyalkenyl, -(C2-C6)hydroxyalkynyl, (C1-C6)alkoxy(C2-C6)alkyl, (C1-C6)alkoxy(C2-C6)alkenyl, (C1-C6)alkoxy(C2-C6)alkynyl, -CN, -OH, -halo, OC(halo)3, -N3, -NO2, -CH=NR7, -N(R7)2, -NR7OH, -OR7, -SR7, -O(CH2)bOR7, -O(CH2)bSR7, -O(CH2)bN(R7)2, -N(R7)(CH2)bOR7, -N(R7)(CH2)bSR7, -N(R7)(CH2)bN(R7)2, -N(R7)COR7, -C(O)R7, -C(O)OR7, -OC(O)R7, -OC(O)OR7, -S(O)R7, or-S(O)2R7, -S(O)2N(R7)2, SO2C(halo)3, -C0N(R7)2, -(C1-C5)alkyl-C=NOR7, -(C1-C5)alkyl-C(O)-N(R7)2) -(C1-C6)alkyl-NHSO2N(R7)2, or -(C1-C6)alkyl-C(=NH)-N(R7)2;
each R2o is independently -H or -(C1-C6)alkyl;
each R2i is independently -H, -(C1-C6)alkyl,
(FORMULA REMOVED)
each halo is independently -F, -C1, -Br, or -I; n is the integer 1, 2, or 3; p is the integer 1 or 2; each b is independently the integer 1 or 2; q is the integer 0, 1,2, 3, or 4; r is the integer 0,1,2, 3,4, 5, or 6; s is the integer 0,1, 2, 3,4, or 5; t is the integer 0, 1, 2, or 3; and m is the integer 0,1, or 2.
In another embodiment relating to formula 1.4, E is =O, =S, =CH(C1-C5)alkyl, =CH(C1-C5)alkenyl, or =N-OR20.
In another embodiment relating to formula 1.4, E is =O, =S, or =N-OR20.
In another embodiment, the invention encompasses compounds of formula 1.3:
(FORMULA REMOVED)
or a pharmaceutically acceptable salt thereof, where X is O, S, N-CN, N-OH, or N-OR10; W is N or C;
the dashed line denotes the presence or absence of a bond, and when the dashed line denotes the presence of a bond or W is N then R4 is absent, otherwise R4 is -H, -OH, -OCF3, -halo, -(C1-C6)alkyl, -CH2OH, -CH2C1, -CH2Br, -CH2I, -CH2F, -CH(halo)2, -
CF3, -OR10, -SR10, -COOH, -COOR10, -C(O)R10, -C(O)H, -OC(O)R1O) -OC(O)NHR,0,-NHC(O)R13, -CON(R13)2,-S(O)2R10, or -NO2; R10 is -(C1-C4)alkyl;
each R13 is independently: -H, -(C1-C4)alkyl, -(C1-C4)alkenyl, -(C1-C4)alkynyl, or -phenyl;
(FORMULA REMOVED)
c is the integer 0, 1, or 2;
Y1, Y2, Y3 are independently C or N;
wherein for each Y1, Y2, and Y3 that is N, the N is bonded to one R20 group, and for each Y1, Y2, and Y3 that is C, the C is bonded to two R20 groups, provided that there are no more than a total of two (C1-C6)alkyl groups substituted on all of Y1, Y2, and Y3;
R12a and R12b are independently -H or -(C1-C6)alkyl;
E is =O, =S, =C(C1-C5)alkyl, =C(C1-C5)alkenyl, =NH(C1-C6)alkyl, or =N-OR20;
Ri is -H, -halo, -(C1-C4)alkyl, -NO2, -CN, -OH, -OCH3, -NH2) -C(halo)3, -CH(halo)2, -CH2(halo), -OC(halo)3, -OCH(halo)2, or -OCH2(halo); each R2 is independently:
(a) -halo, -OH, -CKC1-C4)alkyl, -CN, -NO2, -NH2, -(CrC10)alkyl, -(C2-
C10)alkenyl, -(C2-C10)alkynyl, -phenyl, or
(b) a group of formula Q;
wherein Q is
(FORMULA REMOVED)
Z, is -H, -0R7, -SR7, -CH2-OR7, -CH2-SR7, -CH2-N(R20)2, or -halo;
Z2 is -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -phenyl, or -halo;
each Z3 is independently -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, or -phenyl;
Z4 is -H, -OH, -OR20, -(C1-C6)alkyl, or -NR20; J is -OR20, -SR20, or -N(R20)2;
provided that at least one R2 group is a group of formula Q, and provided that when Z1 is -OR7 or -SR7, then Z2 is not -halo; each R3 is independentiy:
(a) -H, (C1-C6)alkyl, or two R3 groups form a bicyclo group to give one
of the following structures,
(FORMULA REMOVED)
each R7 is independently -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-C8)cycloalkyl, -(C5-C8)cycloalkenyl, -phenyl, -(C1-C6)haloalkyl, -(O-C6)hydroxyalkyl, -(C1-C6)alkoxy(C1-C6)alkyl, -(C1-C6)alkyl-N(R20)2, or -CON(R20)2;
each R8 and R9 are independently -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-C8)cycloalkyl, -(C5-C8)cycloalkenyl, -phenyl, -CH2C(halo)3,-C(halo)3, -CH(halo)2, -CH2(halo), -OC(halo)3, -OCH(halo)2) -OCH2(halo), -O-CN, -OH, -halo, -N3, -NO2, -CH=NR7, -N(R7)2, -NR7OH, -OR7, -C(O)R7, -C(O)OR7, -OC(O)R7, -OC(O)OR7, -SR7, -S(O)R7, or -S(O)2R7;
each Rn is independently -CN, -OH, -(C1-C6)alkyl, -(C2-C6)alkenyl, -halo, -N3, -NO2, -N(R7)2, -CH=NR7, -NRTOH, -OR7, -C(O)R7, -C(O)OR7) -OC(O)R7) or -OC(O)OR7;
each R14 is independently -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-C8)cycloalkyl, -(C5-C8)cycloalkenyl,-(C1-C6)alkoxy-(C1-C6)alkyl, -phenyl, C(halo)3, CH(halo)2, CH2(halo), -(3- to 7-membered)heterocycle, -(C1-C6)haloalkyl, -(C2-C6)haloalkenyl, -(C2-C6)haloalkynyl, -(C2-C6)hydroxyalkenyl, -(C2-C6)hydroxyalkynyl, (C1-C6)alkoxy(C2-C6)alkyl)(C1-C6)alkoxy(C2-C6)alkenyl, (C1-C6)alkoxy(C2-C6)alkynyl, -CN, -OH, -halo, OC(halo)3, -N3, -NO2, -CH=NR7, -N(R7)2, -NR7OH, -OR7, -SR7, -O(CH2)bOR7, -O(CH2)bSR7) -O(CH2)bN(R7)2, -N(R7)(CH2)bOR7, -N(R7)(CH2)bSR7, -N(R7)(CH2)hN(R7)2, -N(R7)C0R7, -C(O)R7, -C(O)OR7, -OC(O)R7, -OC(O)OR7, -S(O)R7, or -S(O)2R7, -S(O)2N(R7)2, SO2C(halo)3) -CON(R7)2, -(C1-C5)alkyl-C=NOR7, -(C1-C5)alkyl-C(O)-N(R7)2, -(C1-C6)alkyl-NHSO2N(R7)2, or -(C1-C6)alkyl-C(=NH)-N(R7)2;
each R20 is independently -H or -(C1-C6)alkyl;
each halo is independently -F, -C1, -Br, or -I;
n is the integer 1,2, or 3;
p is the integer 1 or 2;
each b is independently the integer 1 or 2;
q is the integer 0, 1,2, 3, or 4;
r is the integer 0, 1,2, 3,4, 5, or 6;
s is the integer 0,1, 2, 3,4, or 5;
t is the integer 0,1,2, or 3; and
m is the integer 0,1, or 2.
In another embodiment relating to formula 1.3, E is =O, =S, =CH(C1-C5)alkyl, =CH(CrC5)alkenyl, or =N-OR20.
In another embodiment relating to formula 1.3, E is =O, =S, or =N-OR20.
In another embodiment, the invention encompasses compounds of formula 1.2:
(FORMULA REMOVED)
or a pharmaceutically acceptable salt thereof, where
X is O, S, N-CN, N-OH, or N-OR10;
W is N or C;
the dashed line denotes the presence or absence of a bond, and when the dashed line denotes the presence of a bond or W is N then R* is absent, otherwise R4 is -H, -OH, -OCF3, -halo, -(C1-C6)alkyl, -CH2OH, -CH2C1, -CH2Br, -CH2I, -CH2F, -CH(halo)2, -CF3, -OR10, -SR10, -COOH, -COOR10, -C(O)R10, -C(O)H, -OC(O)R10, -OC(O)NHR10,-NHC(O)R13> -CON(R13)2, -S(O)2R10, or -NO2;
R10 is -(C1-C4)alkyl;
each R13 is independently: -H, -(C1-C4)alkyl, -(C1-C4)alkenyl, -(C1-C4)alkynyl, or -phenyl;
Ar1 is
(FORMULA REMOVED)
c is the integer 0, 1, or 2;
Y1, Y2, Y3 are independently C or N;
wherein for each Y1, Y2, and Y3 that is N, the N is bonded to one R20 group, and for each Y1; Y2, and Y3that is C, the C is bonded to two R20 groups, provided that there are no more than a total of two (C1-C6)alkyl groups substituted on all of Y1, Y2, and Y3;
R12a and R^b are independently -H or -(CrQ)alkyl;
Eis =O, =S, =C(C1-C5)alkyl, =C(CrC5)alkenyl, =NH(C1-C6)alkyl, or =N-OR20;
Ri is -H, -halo, -(C1-C4)alkyl, -NO2, -CN, -OH, -OCH3, -NH2, -C(halo)3, -CH(halo)2, -CH2(halo), -OC(halo)3, -OCH(halo)2, or -OCH2(halo);
each R2 is independently:
(a) -halo, -OH, -O(d-C4)alkyl, -CN, -NO2, -NH2, -(C1-C10)alkyl, -(C2-
C10)alkenyl, -(C2-C10)alkynyl, -phenyl, or
(b) a group of formula Q;
wherein Q is
(FORMULA REMOVED)
Z1 is -H, -OR7, -SR7, -CH2-OR7, -CH2-SR7, -CH2-N(R20)2, or -halo;
Z2 is -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -phenyl, or -halo;
each Z3 is independently -H, -(C1-C6)alkyl, -(C2-C6>alkenyl, -(C2-C6)alkynyl, or -phenyl;
Z4 is -H, -OH, -OR20, -(C1-C6)alkyl, or -NR20;
J is -OR20, -SR20, or -N(R20)2;
provided that at least one R2 group is a group of formula Q, and provided that when Z1 is -0R7 or -SR7, then Z2 is not -halo;
each R3 is independently:
(a) -H, (C1-C6)alkyl, or two R3 groups form a bicyclo group to give one of the following structures,
(FORMULA REMOVED)
each R7 is independently -H, -(Q-QOalkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-C8)cycloalkyl, -(C5-C8)cycloalkenyl, -phenyl, -(C1-C6)haloalkyl, -(d-C6)hydroxyalkyl, -(C1-C6)alkoxy(C1-C6)alkyl, -(C1-C6)alkyl-N(R20)2, or -CON(R20)2;
each R8 and R9 are independently -H, -(C!-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-C8)cycloalkyl, -(C5-C8)cycloalkenyl, -phenyl, -CH2C(halo)3, -C(halo)3, -CH(halo)2, -CH2(halo), -OC(halo)3, -OCH(halo)2, -OCH2(halo), -O-CN, -OH, -halo, -N3, -NO2, -CH=NR7, -N(R7)2, -NR7OH, -OR7, -C(O)R7, -C(O)OR7, -OC(O)R7, -OC(O)OR7, -SR7, -S(O)R7, or -S(O)2R7;
each Rn is independently -CN, -OH, -(C1-C6)alkyl, -(C2-C6)alkenyl, -halo, -N3, -NO2, -N(R7)2, -CH=NR7, -NR7OH, -OR7, -C(O)R7, -C(O)OR7, -OC(O)R7, or -OC(O)OR7;
each R14 is independently -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-Cg)cycloalkyl, -(C5-C8)cycloalkenyl,-(C1-C6)alkoxy-(C1-C6)alkyl, -phenyl, C(halo)3, CH(halo)2, CH2(halo), -(3- to 7-membered)heterocycle, -(C1-C6)haloalkyl, -(C2-C6)haloalkenyl, -(C2-C6)haloalkynyl, -(C2-C6)hydroxyalkenyl, -(C2-C6)hydroxyalkynyl, (C1-C6)alkoxy(C2-C6)alkyl, (C1-C6)alkoxy(C2-C6)alkenyl, (C1-C6)alkoxy(C2-C6)alkynyl, -CN, -OH, -halo, OC(halo)3, -N3, -NO2, -CH=NR7, -N(R7)2, -NR7OH, -OR7, -SR7, -O(CH2)bOR7, -O(CH2)bSR7, -O(CH2)bN(R7)2, -N(R7)(CH2)bOR7, -N(R7)(CH2)bSR7, -N(R7)(CH2)bN(R7)2, -N(R7)COR7, -C(O)R7, -C(O)OR7, -OC(O)R7, -OC(O)OR7, -S(O)R7, or -S(O)2R7, -S(O)2N(R7)2, SO2C(halo)3) -C0N(R7)2, -(CrC5)alkyl-C=NOR7, -(C1-C5)alkyl-C(O)-N(R7)2, -(C1-C6)alkyl-NHSO2N(R7)2, or -(d-C6)alkyl-C(=NH)-N(R7)2;
each R20 is independently -H or -(d-C6)alkyl;
each halo is independently -F, -C1, -Br, or -I; n is the integer 1,2, or 3; p is the integer 1 or 2; each b is independently the integer 1 or 2; q is the integer 0,1, 2, 3, or 4; r is the integer 0, 1,2, 3,4, 5, or 6; s is the integer 0, 1,2, 3,4, or 5; t is the integer 0,1, 2, or 3; and m is the integer 0,1, or 2.
In another embodiment relating to formula 1.2, E is =O, =S, =CH(C1-C5)alkyl, =CH(CrC5)alkenyl, or =N-OR20.
In another embodiment relating to formula 1.2, E is =O, =S, or =N-OR20-
In another embodiment, the invention encompasses compounds of formula 1.1:
(FORMULA REMOVED)
or a pharmaceutical^ acceptable salt thereof, where
X is O, S, N-CN, N-OH, or N-OR]0;
W is N or C;
the dashed line denotes the presence or absence of a bond, and when the dashed line denotes the presence of a bond or W is N then R4 is absent, otherwise R4 is -H, -OH, -OCF3, -halo, -(C1-C6)alkyl, -CH2OH, -CH2C1, -CH2Br, -CH2I, -CH2F, -CH(halo)2, -CF3, -OR10, -SR10, -COOH, -COOR10, -C(O)R10, -C(O)H, -OC(O)R10, -OC(O)NHR,0, -NHC(O)R13,-CON(R13)2, -S(O)2R10, or-NO2;
R10 is -(C1-C4)alkyl;
each Rn is independently: -H, -(C1-C4)alkyl, -(C1-C4)alkenyl, -(C1-C4)alkynyl, or -phenyl;
Ar1 is
(FORMULA REMOVED)
c is the integer 0,1, or 2;
Y1, Y2, Y3 are independently C or N;
wherein for each Y1, Y2, and Y3 that is N, the N is bonded to one R20 group, and for each Y1, Y2, and Y3 that is C, the C is bonded to two R20 groups, provided that there are no more than a total of two (C1-C6)alkyl groups substituted on all of Y1, Y2, and Y3;
R12a and R12b are independently -H or -(C1-C6)alkyl;
Eis =O, =S, =C(CrC5)alkyl, =C(CrC5)alkenyl, =NH(C1-C6)alkyl, or =N-OR20;
Ri is -H, -halo, -(C1-C4)alkyl, -NO2, -CN, -OH, -OCH3, -NH2, -C(halo)3, -CH(halo)2) -CH2(halo), -OC(halo)3, -OCH(halo)2, or -OCH2(halo);
each R2 is independendy:
(a) -halo, -OH, -O(C1-C4)alkyl, -CN, -NO2> -NH2, -(C1-C10)alkyl, -(C2-
C10)alkenyl, -(C2-C10)alkynyl, -phenyl, or
(b) a group of formula Q;
wherein Q is
(FORMULA REMOVED)
Z1 is -H, -OR7, -SR7, -CH2-OR7, -CH2-SR7, -CH2-N(R20)2, or -halo;
Z2 is -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -phenyl, or -halo;
each Z3 is independently -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, or -phenyl;
Z4 is -H, -OH, -OR20, -(C1-C6)alkyl, or -NR^;
J is -OR20, -SR20, or -N(R20)2;
provided that at least one R2 group is a group of formula Q, and provided that when Z1 is -OR7 or -SR7, Z2 in not -halo;
each R3 is independently:
(a) -H, (C1-C6)alkyl, or two R3 groups may form bicyclo group, which gives the following structures,
(FORMULA REMOVED)
each R7 is independently -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-C8)cycloalkyl, -(C5-C8)cycloalkenyl, -phenyl, -(C1-C6)haloalkyl, -(Cr C6)hydroxyalkyl, -(C1-C6)alkoxy(C1-C6)alkyl, -(C1-C6)alkyl-N(R20)2, or -CON(R20)2;
each R8 and R9 are independendy -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-C8)cycloalkyl, -(C5-C8)cycloalkenyl, -phenyl, -CH2C(halo)3,-C(halo)3, -CH(halo)2, -CH2(halo), -OC(halo)3, -OCH(halo)2, -OCH2(halo), -O-CN, -OH, -halo, -N3, -NO2, -CH=NR7, -N(R7)2, -NR7OH, -OR?, -C(O)R7) -C(O)OR7, -OC(O)R7, -OC(O)OR7, -SR7, -S(O)R7, or -S(O)2R7;
each Rn is independendy -CN, -OH, -(C1-C6)alkyl, -(C2-C6)alkenyl, -halo, -N3, -NO2, -N(R7)2, -CH=NR7, -NR7OH, -OR7, -C(O)R7, -C(O)OR7, -OC(O)R7, or -OC(O)OR7;
each R14 is independently -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-C8)cycloalkyl, -(C5-C8)cycloalkenyl,-(C1-C6)alkoxy-(C1-C6)alkyl, -phenyl, C(halo)3, CH(halo)2, CH2(halo), -(3- to 7-membered)heterocycle, -(C1-C6)haloalkyl, -(C2-C6)haloalkenyl, -(C2-C6)haloalkynyl, -(C2-C6)hydroxyalkenyl, -(C2-C6)hydroxyalkynyl, -(C1-C6)alkoxy(C2-C6)alkyl,-(C1-C6)alkoxy(C2-C6)alkenyl,-(C1-C6)alkoxy(C2-C6)alkynyl, -CN, -OH, -halo, OC(halo)3, -N3, -NO2, -CH=NR7, -N(R7)2, -NR7OH, -OR7, -SR7, -O(CH2)bOR7, -O(CH2)bSR7, -O(CH2)bN(R7)2, -N(R7)(CH2)bOR7, -N(R7)(CH2)bSR7, -N(R7)(CH2)bN(R7)2, -N(R7)COR7, -C(O)R7, -C(O)OR7, -OC(O)R7, -OC(O)OR7, -S(O)R7, or -S(O)2R7, -S(O)2N(R7)2) SO2C(halo)3, -CON(R7)2, -(C1-C5)alkyl-C=NOR7, -(C1-C5)alkyl-C(O)-N(R7)2, -(C1-C6)alkyl-NHSO2N(R7)2, or-CQ-C6)alkyl-C(=NH)-N(R7)2;
each R20 is independently -H or -(C1-C6)alkyl;
each halo is independently -F, -Cl, -Br, or -I;
n is the integer 1, 2, or 3;
p is the integer 1 or 2;
each b is independently the integer 1 or 2;
q is the integer 0,1,2,3, or 4; r is the integer 0, 1,2, 3,4, 5, or 6; s is the integer 0, 1,2, 3,4, or 5; t is the integer 0,1,2, or 3; and m is the integer 0,1, or 2.
In another embodiment relating to formula 1.1, E is =O, =S, =CH(CrC5)alkyl, =CH(C1-C5)alkenyl, or =N-OR20.
In another embodiment relating to formula 1.1, E is =O, =S, or =N-OR20. In other embodiments, the compound of formula I is
(FORMULA REMOVED)
Other compounds of interest include
(FORMULA REMOVED)
Aqueous solubility of compounds is often a desirable feature. For example, aqueous solubility of a compound permits that compound to be more easily formulated into a vAr1ety of dosage forms that may be administered to an animal. When a compound is not fully soluble in the blood, it may precipitate in the blood, and the animal’s exposure to the drug will accordingly not correspond to the administered dose. Aqueous solubility increases the likelihood that a compound will not precipitate in an animal’s blood, and increases the ability to predict exposure at the taR8et sight of the compound.
Compounds of formula I are highly soluble in aqueous solution. For example, at either pH 6.8 or pH 1.2, compound 200 isinsoluble in aqueous solution, i.e., has an aqueous solubility 50 and >50, respectively. Additionally, the aqueous solubility at either pH 6.8 or pH 1.2 of each of compounds of formula IG6, H6, J2, and Zl is >50 uM. The following compounds are aqueous insoluble at pH 6.8: 203,207,200, and 208. The following compounds have very low aqueous solubility at pH 6.8: 209,210,211,212, 213,214, and 215 have aqueous solubility, in uM, of 1.0, 0.4, 0.4, 1.9, 0.8, 1.8, and 0.6,
respectively. The aqueous solubility, in uM, at pH 1.2 of compounds 209, 210, 211, 212, 213, 214 and 215 is 9.3, 2.0,1.3,10.3, 39.6, >50 and 9.6, respectively. In contrast, the aqueous solubility at pH 6.8, in uM, of compounds of formula I Nl, Fl, C1, Y3, and U3 is 28.0, 22.6,15.7, 17.4, and 26.4, respectively .At pH 1.2, compounds of formula I Nl, Fl, C1, Y3 and U3 all have an aqueous solubility of >50 uM. The aqueous solubility, at either pH 6.8 or pH 1.2, is >50 uM for each of the following compounds of formula I: HI, N6, Zl, SI, E2, and Ul.
5.2 COMPOUNDS OF FORMULA II
Preferred compounds of formula I are compounds of formula II:
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where the dashed line, W, X, An, Ar2, R3, R4, R20, and m are as defined above for compounds of formula I, wherein Q is
(FORMULA REMOVED)
Z, is -OH, -SH, -N(R20)2, -CH2-OH, -CH2-SH, or -CH2-N(R20)2; Z2 is -H, -CH3, or -CH2-OR7; each Z3 is independently -H or -CH3; and J is -OH, -SH, or -N(R20)2.
In addition to being highly soluble in aqueous solution, compounds of formula II are preferred because side effects are less severe (e.g., attenuation or removal of central
nervous system side effects) in animals administered a compound of formula II. For example, muscle relaxation is attenuated or absent in animals administered a compound of formula n. Sedation is attenuated or absent in animals administered a compound of formula n. Ataxia is attenuated or absent in animals administered a compound of formula n. Flat body posture is attenuated or absent in animals administered a compound of formula n. Tremor is attenuated or absent in animals administered a compound of formula n. When a compound induces less severe side effects, the therapeutic index, which is the difference between an effective dose and a dose that causes adverse effects, is increased. Therapeutic index is a measure of the safety of a compound when administered to an animal. The greater the therapeutic index, the safer the compound.
Compounds of formula II also have excellent pharmacokinetic properties. Specifically, the plasma level of a compound of formula II in an animal is dose proportionate. Therefore, the amount of compound in the plasma of an animal can be more readily controlled according to the dose of the compound administered to the animal. Moreover, for a given dose administered, the animal plasma concentration is greater and is achieved more rapidly for a compound of formula n. For example, compound 200 achieves its maximum plasma concentration 3.1 h after administration. In contrast, compound of formula II Zl achieves its maximum plasma concentration 2.5 h after administration and that maximum plasma concentration is 2.5 times greater than the maximum for compound 200. Additionally, compound of formula IIR6 achieves its maximum plasma concentration 1.85 h after administration and that maximum plasma concentration is 5.3 times greater than the maximum for compound 200. For each of compounds of formula II Zl and R6, the plasma concentration up to 24 h is consistently greater for each when compared with compound 200.
Compound R6 has the following structure:
(STRUCTURE REMOVED)
Compounds of formula II are also preferred because they have a high therapeutic index. Therapeutic index is the difference between the amount of a compound that is effective for treating a Condition and the amount of that same compound that induces adverse effects.
Other embodiments of formula II are presented below.
In one embodiment, a compound of formula II is a pharmaceutically acceptable derivative of a compound of formula n.
In another embodiment, a compound of formula II is a compound of formula II whererein the derivative is a pharmaceutically acceptable salt.
In another embodiment, a compound of formula II is a pharmaceutically acceptable salt of a compound of formula II.
In another embodiment, Ar1 is a pyridyl group.
In another embodiment, Ar1 is a pyrimidinyl group.
In another embodiment, Ar! is a pyraZ1nyl group.
In another embodiment, Ar1 is pyridaZ1nyl group.
In another embodiment, W is C.
In another embodiment, W is N.
In another embodiment, X is O.
In another embodiment, X is S.
In another embodiment, X is N-CN.
In another embodiment, X is N-OH.
In another embodiment, X is N-OR10.
In another embodiment, Ar2 is a benzoimidazolyl group. In another embodiment, Ar2 is a benzothiazolyl group. In another embodiment, Ar2 is a benzooxazolyl group. In another embodiment, Ar2 is
(FORMULA REMOVED)
In another embodiment, Ar2 is
(FORMULA REMOVED)
In another embodiment, Ar2 is
(FORMULA REMOVED)
In another embodiment, Ar2 is
(FORMULA REMOVED)
In another embodiment, Ar2 is
(FORMULA REMOVED)
In another embodiment, n or p is 1.
In another embodiment, n or p is 2.
In another embodiment, n is 3.
In another embodiment, m is 2.
In another embodiment, two R3 groups together form a (C2-C6)bridge, which is unsubstituted or substituted with 1, 2 or 3 independently selected R8 groups, and which bridge optionally contains -HC=CH- within the (C2-C6)bridge.
In another embodiment, two R3 groups together form a (C2-C6)bridge, which is unsubstituted or substituted with an R8 group, and which bridge optionally contains -HC=CH- within the (C2-C6)bridge.
In another embodiment, two R3 groups together form a (C2-C3)bridge, which is unsubstituted or substituted with an R8 group, and which bridge optionally contains -HC=CH- within the (C2-C3)bridge.
In another embodiment, two R3 groups together form a (C2-C3)bridge, which is unsubstituted and which bridge optionally contains -HC=CH- within the (C2-C3)bridge.
In another embodiment, two R3 groups together form a (C2)bridge, a -HC=CH-bridge, or a (C3)bridge each of which is unsubstituted.
In another embodiment, two R3 groups together form a (C2-C6)bridge, which is unsubstituted or substituted with 1, 2 or 3 independently selected R8 groups, which bridge optionally contains -HC=CH- within the (C2-C6)bridge, and which bridge joins positions 2 and 6 of the piperidine, 1,2,3,6-tetrahydropyridine or piperaZ1ne ring.
In another embodiment, two R3 groups together form a (C2-C6)bridge, which is unsubstituted or substituted with an R8 group, which bridge optionally contains -HC=CH- within the (C2-C6)bridge, and which bridge joins positions 2 and 6 of the piperidine, 1,2,3,6-tetrahydropyridine or piperaZ1ne ring.
In another embodiment, two R3 groups together form a (C2-C3)bridge, which is unsubstituted or substituted with an R8 group, which bridge optionally contains -HC=CH- within the (C2-C3)bridge, and which bridge joins positions 2 and 6 of the piperidine, 1,2,3,6-tetrahydropyridine or piperaZ1ne ring.
In another embodiment, two R3 groups together form a (C2-C3)bridge, which is unsubstituted, which bridge optionally contains -HC=CH- within the (C2-C3)bridge, and which bridge joins positions 2 and 6 of the piperidine, 1,2,3,6-tetrahydropyridine or piperaZ1ne ring.
In another embodiment, two R3 groups together form a (C2>bridge, a -HC=CH-bridge, or a (C3)bridge each of which is unsubstituted, and which bridge joins positions 2 and 6 of the piperidine, 1,2,3,6-tetrahydropyridine or piperaZ1ne ring.
In another embodiment, two R3 groups together form a -CH2-N(Ra)-CH2- bridge (Bl), a
(FORMULA REMOVED)
wherein Ra is selected from -H, -(d-C6)alkyl, -(C3-C8)cycloalkyl, -CH2-C(O)-Rc, -(CH2)-C(O)-ORc, -(CH2)-C(O)-N(Rc)2, -(CH2)2-O-Rc, -(CH2)2-S(O)2-N(Rc)2, or -(CH2)2-N(Rc)S(O)2-Rc;
Rb is selected from:
(a) -H, -(d-C6)alkyl, -(C3-C8)cycloalkyl, -(3- to 7-
membered)heterocycle, -N(Rc)2, -N(Rc)-(C3-C8)cycloalkyl, or -N(Rc)-(3- to 7-
membered)heterocycle; or
(b) -phenyl, -(5- or 6-membered)heteroaryl, -N(Rc)-phenyl, or -N(Rc)-(5-
to 10-membered)heteroaryl, each of which is unsubstituted or substituted with 1, 2 or 3
independently selected R7 groups; and
each Re is independently selected from -H or -(C1-C4)alkyl;
In another embodiment, the Bl, B2, or B3 bridge joins positions 2 and 6 of the piperidine, 1,2,3,6-tetrahydropyridine or piperaZ1ne ring.
In another embodiment, two R3 groups form a bicyclo group to give one of the following structures,
(FORMULA REMOVED)
In another embodiment, m is 1.
In another embodiment, m is 0.
In another embodiment, s or q is 0.
In another embodiment, s or q is 1.
In another embodiment, s or q is 2.
In another embodiment, R1 is -H.
In another embodiment, R1 is -halo.
In another embodiment, R1 is -CI.
In another embodiment, R1 is -F.
In another embodiment, R1 is -CH3.
In another embodiment, R1 is -NO2.
In another embodiment, R1 is -CN.
In another embodiment, R1 is -OH.
In another embodiment, R1 is -OCH3.
In another embodiment, R1 is -NH2-
In another embodiment, R1 is -C(halo)3.
In another embodiment, R1 is CF3.
In another embodiment, R1 is -CH(halo>2.
In another embodiment, R1 is -CH2(halo).
In another embodiment, Ar1 is a pyridyl group and n is 1.
In another embodiment, Ar1 is a pyraZ1nyl group and p is 1.
In another embodiment, Ar1 is a pyrimidinyl group and p is 1.
In another embodiment, Ar1 is a pyridaZ1nyl group and p is 1.
In another embodiment, Q is
(FORMULA REMOVED)
In another embodiment, J is -OR20-
In another embodiment, J is -OH.
In another embodiment, Z1 is -OR7.
In another embodiment, Z1 is -OH.
In another embodiment, Z1 is - CH2-OR7.
In another embodiment, Z1 is -CH2OH.
In another embodiment, Z2 is -CH2-OR7.
In another embodiment, Z2 is -CH2OH.
In another embodiment, Z2 is -H or -CH3.
In another embodiment, Z2 is -H.
In another embodiment, Z2 is -CH3.
In another embodiment, Z3 is -H.
In another embodiment, Z3 is -CH3.
In another embodiment, m is 1 and R3 is -(C1-C6)alkyl.
In another embodiment, m is 1 and R3 is -CH3.
In another embodiment, R4 is -OH.
In another embodiment, R4 is -OCF3
In another embodiment, R4 is -halo.
In another embodiment, R4 is -F.
In another embodiment, R4 is -CI.
In another embodiment, R4 is -(C1-C6)alkyl.
In another embodiment, R4 is -CH3.
In another embodiment, R4 is -CH2OH.
In another embodiment, R4 is -CH2CI.
In another embodiment, R4 is -CH2Br.
In another embodiment, R4 is -CH2I.
In another embodiment, R4 is -CH2F.
In another embodiment, R4 is -CH(halo)2.
In another embodiment, R4 is -CF3.
In another embodiment, R4 is -NO2.
In another embodiment, R4 is -OR10.
In another embodiment, R4 is -SR10.
In another embodiment, R4 is -C(O)R10.
In another embodiment, R4 is -COOH.
In another embodiment, R4 is -C(O)H.
In another embodiment, R4 is -COOR10.
In another embodiment, R4 is -OC(O)R10.
In another embodiment, R4 is -SO2R10.
In another embodiment, R4 is -OC(O)NHR10.
In another embodiment, R4 is -NHC(O)R13.
In another embodiment, R4 is -CON(R13)2.
In another embodiment, each R20 is independently -H or -(C1-C6)alkyl.
In another embodiment, each R20 is independently -H or -(C3-C8)cycloalkyl.
In another embodiment, each R20 is independently -(C1-C6)alkyl or -(C3-Cg)cycloalkyl.
In another embodiment, each R20 is -H.
In another embodiment, each R20 is -(C1-C6)alkyl.
In another embodiment, each R20 is -(C3-C8)cycloalkyl.
In another embodiment, Ar2 is a benzothiazolyl, benzoimidazolyl, or benzooxazolyl group; and at least one of R8 and R9 is -H.
In another embodiment, Ar2 is a benzothiazolyl, benzoimidazolyl, or benzooxazolyl group; and at least one of R8 and R9 is not -H.
In another embodiment, Ar2 is a benzothiazolyl, benzoimidazolyl, or benzooxazolyl group; and at least one of R8 and R9 is -halo.
In another embodiment, Ar2 is
(Ri4)s t
s is 1 andR14 is -(C1-C6)alkyl, -halo, -C(halo)3, -OC(halo)3) -OR7, -N(R7)2, -SO2R7, or -SO2C(halo)3.
In another embodiment, Ar2 is
(FORMULA REMOVED)
s is 2, and each Ru group independently is -(C1-C6)alkyl, -halo, -C(halo)3, -OC(halo)3, -OR7, -N(R7)2, -SO2R7, or -SO2C(halo)3.
In another embodiment, J is -OH, and Z1 is -OH.
In another embodiment, J is -OH and Z1 is -CH2OH.
In another embodiment, J is -OH, Z1 is -OH, Z2 is -H, and Z3 is -H.
In another embodiment, J is -OH, Z1 is -CH2OH, Z2 is -H, and Z3 is -H.
In another embodiment, R4 is -halo, J is -OH, Z1 is -OH, TJI is -H, and Z3 is -H.
In another embodiment, R4 is -halo, J is -OH, Z1 is -CH2OH, Z2 is -H, and Z3 is -H.
In another embodiment, R4 is -F, J is -OH, Z1 is -OH, Z2 is -H, and Z3 is -H.
In another embodiment, R4 is -F, J is -OH, Z1 is -CH2OH, Z2 is -H, and Z3 is -H.
In another embodiment, R1 is -halo, R4 is -halo, J is -OH, Z1 is -OH, Z2 is -H, and Z3 is -H.
In another embodiment, R1 is -halo, R4 is -halo, J is -OH, Z1 is -CH2OH, Z2 is -H, and Z3 is -H.
In another embodiment, R1 is -C1, R4 is -F, J is -OH, Z1 is -OH, TJI is -H, and Z3 is -H.
In another embodiment, R1 is -C1, R4 is -F, J is -OH, Z1 is -CH2OH, Z2 is -H, and Z3 is -H.
In another embodiment Ar1 is

(FORMULA REMOVED)
In another embodiment, R1 is -halo, R4 is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -OH, Z2 is -H, and Z3 is -H.
In another embodiment, R1 is -halo, R4 is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -CH2OH, Z2 is -H, and Z3 is -H.
In another embodiment, R1 is -halo, R4 is -halo, An is
(FORMULA REMOVED)
J is -OH, Z1 is -OH, Z2 is -H, Z3 is -H, Ar2 is benzooxazolyl, wherein at least one of R8 or R9 is not -H.
In another embodiment, R\ is -halo, R4 is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -CH2OH, Z2 is -H, Z3 is -H, Ar2 is benzooxazolyl, wherein at least one of R8 or R9 is not -H.
In another embodiment, R\ is -halo, R4 is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -OH, Z2 is -H, Z3 is -H, Ar2 is benzothiazolyl, wherein at least one of Rs or R9 is not -H.
In another embodiment, Rj is -halo, R4 is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -CH2OH, Z2 is -H, Z3 is -H, Ar2 is benzothiazolyl, wherein at least one of R8 or R9 is not -H.
In another embodiment, R1 is -halo, R4 is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -OH, Z2 is -H, Z3 is -H, Ar2 is benzoimidazolyl, wherein at least one of R8 or R9 is not -H.
In another embodiment, R1 is -halo, R4 is -halo, Ai\ is
(FORMULA REMOVED)
J is -OH, Z1 is -CH2OH, Za is -H, Z3 is -H, Ar2 is benzoimidazolyl, wherein at least one of R8 or R9 is not -H.
In another embodiment, R1 is -halo, R4 is -halo, Ar1 is,
(FORMULA REMOVED)
J is -OH, Z1 is -OH, Z2 is -H, Z3 is -H, Ar2 is phenyl, wherein s is 1. In another embodiment, R1 is -halo, R4 is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -CH2OH, Z2 is -H, Z3 is -H, Ar2 is phenyl, wherein s is 2.
In another embodiment, the dashed line is a double bond, R1 is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -OH, Z2 is -H, and Z3 is -H.
In another embodiment, the dashed line is a double bond, R1 is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -CH2OH, Z2 is -H, and Z3 is -H.
In another embodiment, the dashed line is a double bond, R1 is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -OH, Z2 is -H, Z3 is -H, Ar2 is benzooxazolyl, wherein at least one of R8 or R9 is not -H.
In another embodiment, the dashed line is a double bond, R1 is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -CH2OH, Z2 is -H, Z3 is -H, Ar2 is benzooxazolyl, wherein at least one of R8 or R9 is not -H.
In another embodiment, the dashed line is a double bond, R1 is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -OH, Z2 is -H, Z3 is -H, Ar2 is benzothiazolyl, wherein at least one of R8 or R9 is not -H.
In another embodiment, the dashed line is a double bond, R1 is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -CH2OH, Z2 is -H, Z3 is -H, Ar2 is benzothiazolyl, wherein at least one of R8 or R9 is not -H.
In another embodiment, the dashed line is a double bond, R\ is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -OH, Z2 is -H, Z3 is -H, Ar2 is benzoimidazolyl, wherein at least one of R8 or R9 is not -H.
In another embodiment, the dashed line is a double bond, R1 is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -CH2OH, Z2 is -H, Z3 is -H, Ar2 is benzoimidazolyl, wherein at least one of R8 or R9 is not -H.
In another embodiment, the dashed line is a double bond, R1 is -halo, Ar1 is

(FORMULA REMOVED)
J is -OH, Z1 is -OH, Z2 is -H, Z3 is -H, Ar2 is phenyl, wherein s is 1.
In another embodiment, the dashed line is a double bond, R1 is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -OH, Z2 is -H, Z3 is -H, Ar2 is phenyl, wherein s is 2.
In another embodiment, the dashed line is a double bond, R1 is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -CH2OH, Z2 is -H, Z3 is -H, Ar2 is phenyl, wherein s is 1.
In another embodiment, the dashed line is a double bond, R1 is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -CH2OH, Z2 is -H, Z3 is -H, Ar2 is phenyl, wherein s is 2.
In another embodiment, the dashed line is a double bond, Rt is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -OH, Z2 is -H, Z3 is -H, Ar2 is phenyl, wherein s is 1, and R14 is -(Q-C6)alkyl, -halo, -C(halo)3) -OC(halo)3) -OR7) -N(R7)2, -SO2R7, or -SO2C(halo)3.
In another embodiment, the dashed line is a double bond, R1 is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -CH2OH, Z2 is -H, Z3 is -H, Ar2 is phenyl, wherein s is 1, and R14 is -(C1-C6)alkyl, -halo, -C(halo)3, -OC(halo)3, -OR7, -N(R7)2, -SO2R7, or -SO2C(halo)3.
In another embodiment, the dashed line is a double bond, R1 is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -OH, Z2 is -H, Z3 is -H, Ar2 is phenyl, wherein s is 2, and each R14 is independently -(d-C6)alkyl, -halo, -C(halo)3, -OC(halo)3, -OR7, -N(R7)2, -SO2R7, or -SO2C(halo)3.
In another embodiment, the dashed line is a double bond, R\ is -halo, Ar1 is
(FORMULA REMOVED)
J is -OH, Z1 is -CH2OH, Z2 is -H, Z3 is -H, Ar2 is phenyl, wherein s is 2, and each RH is independently -(C1-C6)alkyl, -halo, -C(halo)3, -OC(halo)3, -OR7, -N(R7)2, -SO2R7, or -SO2C(halo)3.
In another embodiment Q is
(FORMULA REMOVED)
wherein the compound of formula II is racemic. In another embodiment Q is
(FORMULA REMOVED)
wherein the % ee of the R enantiomer is greater than 60%. In another embodiment Q is
(FORMULA REMOVED)
wherein the % ee of the R enantiomer is greater than 70%. In another embodiment Q is
(FORMULA REMOVED)
wherein the % ee of the R enantiomer is greater than 80%. In another embodiment Q is
(FORMULA REMOVED)
wherein the % ee of the R enantiomer is greater than 90%. In another embodiment Q is
(FORMULA REMOVED)
wherein the % ee of the R enantiomer is greater than 99%. In another embodiment Q is
(FORMULA REMOVED)
wherein the % ee of the S enantiomer is greater than 60%. In another embodiment Q is
(FORMULA REMOVED)
wherein the % ee of the S enantiomer is greater than 70%. In another embodiment Q is
(FORMULA REMOVED)
wherein the % ee of the S enantiomer is greater than 80%. In another embodiment Q is
(FORMULA REMOVED)
wherein the % ee of the S enantiomer is greater than 90%. In another embodiment Q is
(FORMULA REMOVED)
wherein the % ee of the S enantiomer is greater than 99%. In another embodiment Q is
(FORMULA REMOVED)
In another embodiment Q is
(FORMULA REMOVED)
In another embodiment, the invention encompasses compounds formula II.4:
(FORMULA REMOVED)
or a pharmaceutically acceptable salt thereof, where the dashed line, W, X, Ar^ Ar2, R3, R4, R20, and m are as defined above for compounds of formula 1.4, wherein Q is
(FORMULA REMOVED)
Z, is -OH, -SH, N(R20)2, -CH2-OH, -CH2-SH, or -CH2-N(R20)2; Z2 is -H or -CH3;
each Z3 is independently -H or -CH3; and
J is -OH, -SH, or -N(R20)2.
In another embodiment, the invention encompasses compounds formula II.3:
(FORMULA REMOVED)
or a pharmaceutical^ acceptable salt thereof, where the dashed line, W, X, Ar1, Ar2, R3, R4, R20, and m are as defined above for compounds of formula 1.3, wherein Q is
(FORMULA REMOVED)
Zj is -OH, -SH, N(R20)2, -CH2-OH, -CH2-SH, or -CH2-N(R20)2;
Z2 is -H or -CH3;
each Z3 is independently -H or -CH3; and
J is -OH, -SH, or -N(R20)2.
In another embodiment, the invention encompasses compounds formula II.2:
(FORMULA REMOVED)
or a pharmaceutical^ acceptable salt thereof, where the dashed line, W, X, Arb Ar2, R3, R4, R20, and m are as defined above for compounds of formula 1.2,
86 wherein Q is
(FORMULA REMOVED)
Z1 is -OH, -SH, N(R20)2, -CH2-OH, -CH2-SH, or -CH2-N(R20)2;
la is -H or -CH3;
each Z3 is independently -H or -CH3; and
J is -OH, -SH, or -N(R20)2.
In another embodiment, the invention encompasses compounds formula II. 1:
(FORMULA REMOVED)
or a pharmaceutical^ acceptable salt thereof, where the dashed line, W, X, An, Ar2, R3, R4, R20, and m are defined above for compounds of formula 1.1, wherein Q is
(FORMULA REMOVED)
Z! is -OH, -SH, N(R20)2, -CH2-OH, -CH2-SH, or -CH2-N(R20)2;
Z2 is -H or -CH3;
each Z3 is independently -H or -CH3; and
J is -OH, -SH, or -N(R20)2.
87 5.3 COMPOUNDS OF FORMULA in
Preferred compounds of formula II are compounds of formula III:
(FORMULA REMOVED)
or a pharmaceutical^ acceptable derivative thereof, where the dashed line, W, X, R3, R4, and m are as defined above for compounds of formula I, wherein Ar1 is:
(FORMULA REMOVED)
Riis-Cl, -F, or-CF3; wherein Ar2 is:
(FORMULA REMOVED)
R14 is -H, -C1, -F, -Br, -OCF3, -(C1-C6)alkyl, -SO2CF3, -SO2(C,-C6)alkyl, -OCH3, -OCH2CH3, or -OCH(CH3)2, and preferably is -CF3, -OCF3, -C1, or -F;
Ri4- is -H, -C1, -F, Br, -CH3, -CH2CH3, -OCH3, -OCF3, or -OCH2CH3; and
each R8 and R9 is independently -H, -C1, -Br, -F, -CH3, -OCH3, -OCH2CH3, -CF3, -OCF3, iso-propyl, or tert-butyl.
In addition to being highly soluble in aqueous solution at both pH 6.8 and pH 1.2, having a very high therapeutic index, and having excellent pharmacokinetic parameters as described for formulae I and II, compounds of formula III are preferred because they are also very bioavailable, and are believed to be highly efficaC10us in animals for the treatment of pain. Bioavailability is a measure of how much of the dose administered reaches systemic circulation after oral administration. For example, compounds of formula in R6 and Gl are 68.9% and 70.7% bioavailable following oral administration, respectively. The compound of formula III D2 produced a 78.7% maximum reversal of FCA-induced hyperalgesia at 5 hours post-administration, with an EDsoof 1.63mg/kg.
Certain embodiments of formula III are presented below.
In one embodiment, a compound of formula HI is a pharmaceutically acceptable derivative of a compound of formula HI.
In another embodiment, a compound of formula I is a compound of formula III whererein the derivative is a pharmaceutically acceptable salt.
In another embodiment, a compound of formula III is a pharmaceutically acceptable salt of a compound of formula III.
In another embodiment, Ar1 is:
(FORMULA REMOVED)
In a preferred embodiment, Ar1 is:
(FORMULA REMOVED)
In another embodiment, m is 2.
In another embodiment, two R3 groups together form a (C2-C6)bridge, which is unsubstituted or substituted with 1, 2 or 3 independently selected R8 groups, and which bridge optionally contains -HC=CH- within the (C2-C6)bridge.
In another embodiment, two R3 groups together form a (C2-C6)bridge, which is unsubstituted or substituted with an R8 group, and which bridge optionally contains -HC=CH- within the (C2-C6)bridge.
In another embodiment, two R3 groups together form a (C2-C3)bridge, which is unsubstituted or substituted with an R8 group, and which bridge optionally contains -HC=CH- within the (C2-C3)bridge.
In another embodiment, two R3 groups together form a (C2-C3)bridge, which is unsubstituted and which bridge optionally contains -HC=CH- within the (C2-C3)bridge.
In another embodiment, two R3 groups together form a (C2)bridge, a -HC=CH-bridge, or a (C3)bridge each of which is unsubstituted.
In another embodiment, two R3 groups together form a (C2-C6)bridge, which is unsubstituted or substituted with 1, 2 or 3 independently selected R8 groups, which bridge optionally contains -HC=CH- within the (C2-C6)bridge, and which bridge joins positions 2 and 6 of the piperidine, 1,2,3,6-tetrahydropyridine or piperaZ1ne ring.
In another embodiment, two R3 groups together form a (C2-C6)bridge, which is unsubstituted or substituted with an R8 group, which bridge optionally contains -HC=CH- within the (C2-C6)bridge, and which bridge joins positions 2 and 6 of the piperidine, 1,2,3,6-tetrahydropyridine or piperaZ1ne ring.
In another embodiment, two R3 groups together form a (C2-C3)bridge, which is unsubstituted or substituted with an R8 group, which bridge optionally contains -HC=CH- within the (C2-C3)bridge, and which bridge joins positions 2 and 6 of the piperidine, 1,2,3,6-tetrahydropyridine or piperaZ1ne ring.
In another embodiment, two R3 groups together form a (C2-C3)bridge, which is unsubstituted, which bridge optionally contains -HC=CH- within the (C2-C3)bridge, and which bridge joins positions 2 and 6 of the piperidine, 1,2,3,6-tetrahydropyridine or piperaZ1ne ring.
In another embodiment, two R3 groups together form a (C2)bridge, a -HC=CH-bridge, or a (C3)bridge each of which is unsubstituted, and which bridge joins positions 2 and 6 of the piperidine, 1,2,3,6-tetrahydropyridine or piperaZ1ne ring.
In another embodiment, two R3 groups together form a -CH2-N(Ra)-CH2- bridge (Bl), a
(FORMULA REMOVED)
wherein R, is selected from -H, -(C1-C6)alkyl, -(C3-C8)cycloalkyl, -CH2-C(O)-Rc, -(CH2)-C(O)-ORc, -(CH2)-C(O)-N(Rc)2) -(CH2)2-O-Rc, -(CH2)2-S(O)2-N(Rc)2, or -(CH2)2-N(RC)S(O)2-RC;
Rb is selected from:
(a) -H, -(C1-C6)alkyl, -(C3-C8)cycloalkyl, -(3- to 7-
membered)heterocycle, -N(Rc)2, -N(Rc)-(C3-C8)cycloalkyl, or -N(Rc)-(3- to 7-
membered)heterocycle; or
(b) -phenyl, -(5- or 6-membered)heteroaryl, -N(Rc)-phenyl, or -N(Rc)-(5-
to 10-membered)heteroaryl, each of which is unsubstituted or substituted with 1, 2 or 3
independently selected R7 groups; and
each Re is independently selected from -H or -(C1-C4)alkyl;
In another embodiment, the Bl, B2, or B3 bridge joins positions 2 and 6 of the piperidine, 1,2,3,6-tetrahydropyridine or piperaZ1ne ring.
In another embodiment, two R3 groups form a bicyclo group to give one of the following structures,
(FORMULA REMOVED)
In another embodiment, m is 1. In another embodiment, m is 0.
In another embodiment X is O.
In another embodiment the dashed line denotes the presence of a bond and R4 is absent.
In another embodiment W is N and R4 is absent.
In another embodiment R4 is -H, -OH, -C1, or F.
In another embodiment, each R20 is independently -H or -(C1-C6)alkyl.
In another embodiment, each R20 is -H.
In another embodiment, each R20 is -(C1-C6)alkyl.
In another embodiment Ar2 is selected from
(FORMULA REMOVED)
In another embodiment Ar1 is
(FORMULA REMOVED)
wherein the compound of formula III is racemic. In another embodiment Ar1 is
(FORMULA REMOVED)
wherein the % ee of the R enantiomer is greater than 60%. In another embodiment Ar1 is
(FORMULA REMOVED)
wherein the % ee of the R enantiomer is greater than 70%. In another embodiment Ar1 is
(FORMULA REMOVED)
wherein the % ee of the R enantiomer is greater than 80%. In another embodiment Ar1 is
(FORMULA REMOVED)
wherein the % ee of the R enantiomer is greater than 90%. In another embodiment Ar1 is
(FORMULA REMOVED)
wherein the % ee of the R enantiomer is greater than 99%. In another embodiment Ar1 is

(FORMULA REMOVED)
wherein the % ee of the S enantiomer is greater than 60%. In another embodiment Ar1 is
(FORMULA REMOVED)
wherein the % ee of the S enantiomer is greater than 70%. In another embodiment Ar1 is
(FORMULA REMOVED)
wherein the % ee of the S enantiomer is greater than 80%. In another embodiment Ar1 is
(FORMULA REMOVED)
wherein the % ee of the S enantiomer is greater than 90%. In another embodiment Ar1 is
(FORMULA REMOVED)
wherein the % ee of the S enantiomer is greater than 99%. In another embodiment Ar1 is
(FORMULA REMOVED)
In another embodiment Ar1 is
(FORMULA REMOVED)
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where RH is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where RH is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is

(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where RH is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where Ru is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where Rn is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where Ru is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is

(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where RH is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where RH is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is

(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where RH is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where RH is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where RM is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where RH is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is

(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where RH is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where RH is as defined above for the compounds of formula I.
In another embodiment the compound of formula HI is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is

(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where RH is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where Ru is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where RH is as defined above for the compounds of formula I.
In another embodiment the compound of formula in is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where R14 is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is

(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where Rw is as defined above for the compounds of formula I.
In another embodiment the compound of formula HI is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where Rw is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where RH is as defined above for the compounds of formula I.
In another embodiment the compound of formula III is
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, where Ri4 is as defined above for the compounds of formula I.
In another embodiment, the invention encompasses compounds of formula III.4:
(FORMULA REMOVED)
or a pharmaceutically acceptable salt thereof, where the dashed line, W, X, Ar1, Ar2, R3, R4, and m are as defined above for compounds of formula 1.4, wherein Ar1 is:
(FORMULA REMOVED)
Ri is -C1, -F, or -CF3; wherein Ar2 is:
(FORMULA REMOVED)
Ri4- is -H, -C1, -F, -Br, -CH3, -CH2CH3, -OCH3, or -OCH2CH3;
R9 is -C1, F, or CH3.
In another embodiment, the invention encompasses compounds of formula III. 3:
(FORMULA REMOVED)
or a pharmaceutically acceptable salt thereof, where the dashed line, W, X, Ar1, Ar2, R3, R4, and m are as defined above for compounds of formula 1.3, wherein Ar1 is:
(FORMULA REMOVED)
Ri is -C1, -F, or -CF3; wherein Ar2 is:
(FORMULA REMOVED)
R14is -C1, -F, -CH3, -CH2CH3, -OCH3, or-OCH2CH3;
R9 is -C1, F, or CH3.
Illustrative compounds of formula III are listed below in Tables 1-30:
(TABLE REMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE REMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and cceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
In other embodiments, substituent RK of Tables 1-12 can be H.
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
harmaceuticallyacceptable derivatives thereof, where:
(TABLE EMOVED)
pharmaceuticallyacceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptablederivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:

(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:

(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceuticallyacceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:

(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:
(TABLE EMOVED)
and pharmaceutically acceptable derivatives thereof, where:and pharmaceutically
derivatives thereof, where:
5.4 DEFINITIONS
As used herein, the terms used above having following meaning:
“-(C1-C10)alkyl” means a straight chain or branched non-cyclic hydrocarbon having from 1 to 10 carbon atoms. Representative straight chain -(C1-C10)alkyls include -methyl, -ethyl, -n-propyl, -n-butyl, -n-pentyl, -n-hexyl, -n-heptyl, -n-octyl, -n-nonyl, and -n-decyl. Representative branched -(C1-C10)alkyls include -wo-propyl, -sec-butyl, -wo-butyl, -tert-butyl, -wo-pentyl, -«eo-pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 1,1-dimethylpropyl, 1,2-dimethylpropyl, 1-methylpentyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 1-ethylbutyl, 2-ethylbutyl, 3-ethylbutyl, 1,1-dimethylbutyl, 1,2-dimethylbutyl, 1,3-dimethylbutyl, 2,2-dimethylbutyl, 2,3-dimethylbutyl, 3,3-dimethylbutyl, 1-methylhexyl, 2-methylhexyl, 3-methylhexyl, 4-methylhexyl, 5-methylhexyl, 1,2-dimethylpentyl, 1,3-dimethylpentyl, 1,2-dimethylhexyl, 1,3-dimethylhexyl, 3,3-dimethylhexyl, 1,2-dimethylheptyl, 1,3-dimethylheptyl, and 3,3-dimethylheptyl.
“-(C1-C6)alkyl” means a straight chain or branched non-cyclic hydrocarbon having from 1 to 6 carbon atoms. Representative straight chain -(C1-C6)alkyls include -methyl, -ethyl, -n-propyl, -n-butyl, -n-pentyl, and -n-hexyl. Representative branched -(C1-C6)alkyls include -wo-propyl, -sec-butyl, -wo-butyl, -terf-butyl, -wo-pentyl, -neo-pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 1,1-dimethylpropyl, 1,2-dimethylpropyl, 1-methylpentyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 1-ethylbutyl, 2-ethylbutyl, 3-ethylbutyl, 1,1-dimethtylbutyl, 1,2-dimethylbutyl, 1,3-dimethylbutyl, 2,2-dimethylbutyl, 2,3-dimethylbutyl, and 3,3-dimethylbutyl.
“-(C1-C6)haloalkyl” means a straight chain or branched non-cyclic hydrocarbon having from 1 to 6 carbon atoms as defined above for -(C1-C6)alkyl that is substituted with 1, 2 or 3 independently selected halo groups.
“-(C1-C6)hydroxyalkyl” means a straight chain or branched non-cyclic hydrocarbon having from 1 to 6 carbon atoms as defined above for -(C1-C6)alkyl that is substituted with 1, 2 or 3 hydroxyl groups.
“-(C1-C4)alkyl” means a straight chain or branched non-cyclic hydrocarbon having from 1 to 4 carbon atoms. Representative straight chain -(C1-GOalkyls include -methyl, -ethyl, -n-propyl, and -n-butyl. Representative branched -(C1-C4)alkyls include -wo-propyl, -sec-butyl, -iso-butyl, and -terf-butyl.
“-(C2-C10)alkenyl” means a straight chain or branched non-cyclic hydrocarbon having from 2 to 10 carbon atoms and including at least one carbon-carbon double bond. Representative straight chain and branched (C2-C10)alkenyls include -vinyl, -allyl, -1-butenyl, -2-butenyl, -wo-butylenyl, -1-pentenyl, -2-pentenyl, -3-methyl-l-butenyl, -2-methyl-2-butenyl, -2,3-dimethyl-2-butenyl, -1-hexenyl, -2-hexenyl, -3-hexenyl, -1-heptenyl, -2-heptenyl, -3-heptenyl, -1-octenyl, -2-octenyl, -3-octenyl, -1-nonenyl, -2-nonenyl, -3-nonenyl, -1-decenyl, -2-decenyl, -3-decenyl and the like.
“-(C2-C6)alkenyl” means a straight chain or branched non-cyclic hydrocarbon having from 2 to 6 carbon atoms and including at least one carbon-carbon double bond. Representative straight chain and branched (C2-C6)alkenyls include -vinyl, -allyl, -1-butenyl, -2-butenyl, -wo-butylenyl, -1-pentenyl, -2-pentenyl, -3-methyl-l-butenyl, -2-methyl-2-butenyl, -2,3-dimethyl-2-butenyl, -1-hexenyl, 2-hexenyl, 3-hexenyl and the like.
“-(C2-C6)haloalkenyl” means a straight chain or branched non-cyclic hydrocarbon having from 2 to 6 carbon atoms and including at least one carbon-carbon double bond as defined above for -(C2-C6)alkenyl that is substituted with 1, 2 or 3 independently selected halo groups.
“-(C2-C6)hydroxyalkenyl” means a straight chain or branched non-cyclic hydrocarbon having from 2 to 6 carbon atoms and including at least one carbon-carbon double bond as defined above for -(C2-C6)alkenyl that is substituted with 1, 2 or 3 hydroxyl groups.
“-(C2-C10)alkynyl” means a straight chain or branched non-cyclic hydrocarbon having from 2 to 10 carbon atoms and including at least one carbon-carbon triple bond. Representative straight chain and branched -(C2-C10)alkynyls include -acetylenyl, -propynyl, -1-butynyl, -2-butynyl, -1-pentynyl, -2-pentynyl, -3-methyl-l-butynyl, -4-pentynyl, -1-hexynyl, -2-hexynyl, -5-hexynY1, -1-heptynyl, -2-heptynyl, -6-heptynyl, -1-octynyl, -2-octynyl, -7-octynyl, -1-nonynyl, -2-nonynyl, -8-nonynyl, -1-decynyl, -2-decynyl, -9-decynyl and the like.
“-(C2-C6)alkynyl” means a straight chain or branched non-cyclic hydrocarbon having from 2 to 6 carbon atoms and including at least one carbon-carbon triple bond. Representative straight chain and branched (C2-C6)alkynyls include -acetylenyl, -propynyl, -1-butynyl, -2-butynyl, -1-pentynyl, -2-pentynyl, -3-methyl-l-butynyl, -4-pentynyl, -1-hexynyl, -2-hexynyl, -5-hexynyl and the like.
“-(C2-C6)haloalkynyl” means a straight chain or branched non-cyclic hydrocarbon having from 2 to 6 carbon atoms and including at least one carbon-carbon triple bond that is substituted with 1, 2 or 3 independently selected halo groups.
“ -(C2-C6)hydroxyalkynyl” means a straight chain or branched non-cyclic hydrocarbon having from 2 to 6 carbon atoms and including at least one carbon-carbon triple bond that is substituted with 1, 2 or 3 hydroxyl groups.
“-(C1-C6)alkoxy” means a straight chain or branched non cyclic hydrocarbon having one or more ether groups and from 1 to 6 carbon atoms. Representative straight chain and branched -(C1-C6)alkoxys include methoxy, ethoxy, propoxy, butoxy, pentoxy, hexoxy, methoxymethyl, 2-methoxyethyl, 5-methoxypentyl, 3-ethoxybutyl, and the like.
“-(C1-C6)alkoxy(C2-C6)alkyl” means a straight chain or branched non cyclic hydrocarbon having one or more ether groups and from 1 to 6 carbon atoms as defined above for -(C1-C6)alkoxy group that is substituted with a -(C2-C6)alkyl group.
“-(C1-C6)alkoxy(C2-C6)alkenyl” means a straight chain or branched non cyclic hydrocarbon having one or more ether groups and from 1 to 6 carbon atoms as defined above for -(C1-C6)alkoxy group that is substituted with a -(C2-C6)alkenyl group.
“-(C1-C6)alkoxy(C2-C6)alkynyl” means a straight chain or branched non cyclic hydrocarbon having one or more ether groups and from 1 to 6 carbon atoms that is substituted with a -(C2-C6)alkynyl group.
“-(C1-C6)alkoxy(C3-C8)cycloalkyl” means a straight chain or branched non cyclic hydrocarbon having one or more ether groups and from 1 to 6 carbon atoms as defined above for -(C1-C6)alkyl group that is substituted with a -(C3-C8)cycloalkyl group
“-(C3-C10)cycloalkyl” means a saturated cyclic hydrocarbon having from 3 to 10 carbon atoms. Representative (C3-C10)cycloalkyls are -cyclopropyl, -cyclobutyl, -cyclopentyl, -cyclohexyl, -cycloheptyl, -cyclooctyl, -cyclononyl, and -cyclodecyl.
“-(C3-C8)cycloalkyl” means a saturated cyclic hydrocarbon having from 3 to 8 carbon atoms. Representative (C3-C8)cycloalkyls include -cyclopropyl, -cyclobutyl, -cyclopentyl, -cyclohexyl, -cycloheptyl, and -cyclooctyl.
“-(C5-C8)cycloalkenyl” means a cyclic non-aromatic hydrocarbon having at least one carbon-carbon double bond in the cyclic system and from 5 to 8 carbon atoms. Representative -(C5-C8)cycloalkenyls include -cyclopentenyl, -cyclopentadienyl,
• cyclohexenyl, -cyclohexadienyl, -cycloheptenyl, -cycloheptadienyl, -cycloheptatrienyl, -cyclooctenyl, -cyclooctadienyl, -cyclooctatrienyl, -cyclooctatetraenyl and the like.
“-(3- to 7-membered)heterocycle” or “-(3- to 7-membered)heterocyclo” means a 3- to 7-membered monocyclic heterocyclic ring which is either saturated, unsaturated non-aromatic, or aromatic. A 3-membered heterocycle can contain up to 1 heteroatom, a 4-membered heterocycle can contain up to 2 heteroatoms, a 5-membered heterocycle can contain up to 4 heteroatoms, a 6-membered heterocycle can contain up to 4 heteroatoms, and a 7-membered heterocycle can contain up to 5 heteroatoms. Each heteroatom is independently selected from nitrogen, which can be quaternized; oxygen; and sulfur, including sulfoxide and sulfone. The -(3- to 7-membered)heterocycle can be attached via a nitrogen or carbon atom. Representative -(3- to 7-membered)heterocycles include pyridyl, furyl, thiophenyl, pyrrolyl, oxazolyl, imidazolyl, thiazolidinyl, thiadiazolyl, thiazolyl, isoxazolyl, pyrazolyl, isothiazolyl, pyridaZ1nyl, pyrimidinyl, triaZ1nyl, morpholinyl, pyrrolidinonyl, pyrrolidinyl, piperidinyl, piperaZ1nyl, 2,3-dihydrofuranyl, dihydropyranyl, hydantoinyl, valerolactamyl, oxiranyl, oxetanyl, tetrahydrofuranyl, tetrahydropyranyl, dihydropyridinyl, tetrahydropyridinyl, tetrahydropyrimidinyl, tetrahydrothiophenyl, tetrahydrothiopyranyl, and the like.
“-(5- to 10-membered)heteroaryl” means an aromatic heterocycle ring of 5 to 10 members, including both mono- and bicyclic ring systems, where at least one carbon atom of one or both of the rings is replaced with a heteroatom independently selected from nitrogen, oxygen, and sulfur, or at least two carbon atoms of one or both of the rings are replaced with a heteroatom independently selected from nitrogen, oxygen, and sulfur. In one embodiment, one of the -(5- to 10-membered)heteroaryl’s rings contain at least one carbon atom. In another embodiment, both of the -(5- to 10-membered)heteroaryl’s rings contain at least one carbon atom. Representative -(5- to 10-membered)heteroaryls include pyridyl, furyl, benzofuranyl, thiophenyl, benzothiophenyl, quinolinyl, isoquinolinyl, pyrrolyl, indolyl, oxazolyl, benzoxazolyl, imidazolyl, benZ1midazolyl, thiazolyl, benzothiazolyl, isoxazolyl, oxadiazolinyl, pyrazolyl, isothiazolyl, pyridaZ1nyl, pyrimidyl, pyrimidinyl, pyraZ1nyl, thiadiazolyl, triaZ1nyl, thienyl, cinnolinyl, phthalaZ1nyl, and quinazolinyl.
“-(5- or 6-membered)heteroaryl” means a monocyclic aromatic heterocycle ring of 5 or 6 members where at least one carbon atom is replaced with a heteroatom independently selected from nitrogen, oxygen, and sulfur. In one embodiment, one of the -(5- or 6-membered)heteroaryrs ring contains at least one carbon atom.
Representative -(5- or 6-membered)heteroaryls include pyridyl, furyl, pyrrolyl, oxazolyl, imidazolyl, thiazolyl, isoxazolyl, 1,2,3-oxadiazolyl, 1,3,4-oxadiazolyl, 1,2,5-oxadiazolyl, 1,2,3-triazolyl, pyrazolyl, isothiazolyl, pyridaZ1nyl, pyrimidyl, pyraZ1nyl, 1,2,3-thiadiazolyl, 1,3,4-thiadiazolyl, 1,2,5-thiadiazolyl, 1,3,5-triaZ1nyl, and thiophenyl.
“-CH2(halo)” means a methyl group where one of the hydrogens of the methyl group has been replaced with a halogen. Representative -CH2(halo) groups include -CH2F, -CH2C1, -CH2Br, and -CH2I.
“-CH(halo)2” means a methyl group where two of the hydrogens of the methyl group have been replaced with a halogen. Representative -CH(halo)2 groups include -CHF2, -CHCI2, -CHBr2, CHBrCl, CHC1I, and -Cffl2.
“-C(halo)3” means a methyl group where each of the hydrogens of the methyl group has been replaced with a halogen. Representative -C(halo)3 groups include -CF3, -CCI3, -CBr3) and -CI3.
“-Halogen” or “-Halo” means -F, -C1, -Br, or -I.
“(C2-C6)bridge” as used herein means a hydrocarbon chain containing 2 to 6 carbon atoms joining two atoms of the piperidine, 1,2,3,6-tetrahydropyridine or piperaZ1ne ring of the compounds of formulas I, II and/or III to form a fused bicyclic ring system. The positions of the piperidine, 1,2,3,6-tetrahydropyridine or piperaZ1ne ring are denoted as follows:
(FORMULA REMOVED)
For example, compounds of the invention can comprise a (C2-C6)bridge joining positions 2 and 6 of the piperidine, 1,2,3,6-tetrahydropyridine or piperaZ1ne ring (two R3 groups can together form a (C2-C6>bridge). Examples of compounds where two R3 groups can together form a (C2-C6)bridge include compounds comprising the following ring systems: 8-aza-bicyclo[3.2.1]octane; 8-azabicyclo[3.2.1]oct-3-ene; 3,8-diazabicyclo[3.2.l]octane; 8-azabicyclo[3.2.l]oct-6-ene; 8-azabicyclo[3.2.l]octa-3,6-
diene; 3,8-diazabicyclo[3.2.1]oct-6-ene; 9-aza-bicyclo[3.3.1]nonane; 9-azabicyclo[3.3. l]non-3-ene; 9-azabicyclo[3.3. l]non-6-ene; 9-azabicyclo[3.3. l]nona-3,6-diene; 9-azabicyclo[3.3.1]nona-3,7-diene; 3,9-diazabicyclo[3.3.l]nonane; 3,9-diazabicyclo[3.3.1 ]non-6-ene; 3,9-diazabicyclo[3.3.1 ]non-7-ene; 1O-aza-bicyclo[4.3.1]decane; 10-azabicyclo[4.3.1]dec-8-ene; 8,10-diazabicyclo[4.3.1]decane; 8,10-diazabicyclo[4.3.1]dec-3-ene; 8,10-diazabicyclo[4.3.1]dec-4-ene; 8-azabicyclo[4.3.l]dec-4-ene; 8-azabicyclo[4.3.l]dec-3-ene; 8-azabicyclo[4.3. l]deca-2,6(1O)-diene;8-azabicyclo[4.3.1]deca-3,6(1O)-diene;8-azabicyclo[4.3.1]deca-4,6(1O)-diene; ll-aza-bicyclo[5.3.1]undecane; ll-azabicyclo[5.3.1]undec-8-ene; 9,11-diazabicyclo[5.3.1]undecane; 12-aza-bicyclo[6.3.1]dodecane; 12-azabicyclo[6.3.1]dodec-9-ene; and 10,12-diazabicyclo[6.3.1]dodecane. In connection with the Ar2 group
(FORMULA REMOVED)
when E is -NH(C1-C6)alkyl it is to be understood that the dashed line in the above Ar2 group is absent, i.e., the Ar2 group is
(FORMULA REMOVED)
where Y1, Y2, Y3, R14, c and t are as defined above for compounds of formula I. When Eis =O, =S, =C(C1-C5)alkyl, =C(C1-C5)alkenyl, or =N-OR20, it is to be understood that the dashed line in the above Ar2 group is present, i.e., the Ar2 group is
(FORMULA REMOVED)
respectively, where Y1, Y2, Y3, Ru, R20, c and t are as defined above for compounds of formula I.
The phrase “pyridyl group” means
(FORMULA REMOVED)
where Ri, R2, and n are as defined above for compounds of formula I, and where the numbers designate the position of each atom in the ring. The phrase “pyraZ1nyl group” means
(FORMULA REMOVED)
where Ri, R2, and p are as defined above for compounds of formula I. The phrase “pyrimidinyl group” means

(FORMULA REMOVED)
where Ri, R2, and p are as defined above for compounds of formula I. The phrase “pyridaZ1nyl group” means
(FORMULA REMOVED)
where Ri, R2, and p are as defined above for compounds of formula I. The phrase “benzoimidiazolyl group” means
(FORMULA REMOVED)
where R8, R9, and R20 are as defined above for compounds of formula I. The phrase “benzothiazolyl group” means
(FORMULA REMOVED)
where R% and R9 are as defined above for compounds of formula I. The phrase “benzooxazolyl group” means
(FORMULA REMOVED)
where Rs and R9 are as defined above for compounds of formula I. The phrase phenyl group means
(FORMULA REMOVED)
where Ru and s are as defined for compounds of formula I. The phrase “tetrahydropyridyi” means
(FORMULA REMOVED)
where the numbers designate the position of each atom of the tetrahydropyridyi ring.
The term “animal,” includes, but is not limited to, a cow, monkey, baboon, chimpanzee, horse, sheep, pig, chicken, turkey, quail, cat, dog, mouse, rat, rabbit, guinea pig, and human.
The phrase “pharmaceutically acceptable derivative,” as used herein, includes any pharmaceutically acceptable salt, solvate, radiolabeled, stereoisomer, enantiomer, diastereomer, other stereoisomeric form, racemic mixture, geometric isomer, and/or tautomer, e.g., of a compound of formula I of the invention. In one embodiment, the pharmaceutically acceptable derivative is a pharmaceutically acceptable salt, solvate, radiolabeled, stereoisomer, enantiomer, diastereomer, other stereoisomeric form, racemic mixture, geometric isomer, and/or tautomer, e.g., of a compound of formula I of
the invention. In another embodiment, the pharmaceutically acceptable derivative is a pharmaceutical^ acceptable salt, e.g., of a compound of formula I of the invention.
The phrase “pharmaceutically acceptable salt,” as used herein, is any pharmaceutically acceptable salt that can be prepared from a compound of formula I including a salt formed from an acid and a basic functional group, such as a nitrogen group, of a compound of formula I. Illustrative salts include, but are not limited, to sulfate, citrate, acetate, trifluoroacetate, oxalate, chloride, bromide, iodide, nitrate, bisulfate, phosphate, acid phosphate, isonicotinate, lactate, salicylate, acid citrate, tartrate, oleate, tannate, pantothenate, bitartrate, ascorbate, succinate, maleate, gentisinate, fumarate, gluconate, glucoronate, saccharate, formate, benzoate, glutamate, methanesulfonate, ethanesulfonate, benzenesulfonate, p-toluenesulfonate, and pamoate (i.e., l,r-methylene-bis-(2-hydroxy-3-naphthoate)) salts. The term “pharmaceutically acceptable salt” also includes a salt prepared from a compound of formula I having an acidic functional group, such as a carboxylic acid functional group, and a pharmaceutically acceptable inoR8anic or oR8anic base. Suitable bases include, but are not limited to, hydroxides of alkali metals such as sodium, potassium, cesium, and lithium; hydroxides of alkaline earth metal such as calcium and magnesium; hydroxides of other metals, such as aluminum and Z1nc; ammonia and oR8anic amines, such as unsubstituted or hydroxy-substituted mono-, di-, or trialkylamines; dicyclohexylamine; tributyl amine; pyridine; picoline; N-methyl,N-ethylamine; diethylamine; triethylamine; mono-, bis-, or tris-(2-hydroxy-(C1-C3)alkyl amines), such as mono-, bis-, or tris-(2-hydroxyethyl)amine, 2-hydroxy-terf-butylamine, or tris-(hydroxymethyl)methylamine, N,N-di-[(C1 -C3>alkyl] -N-(hydroxy-(C 1 -C3)alkyl)-amines, such as N,N-dimethyl-N-(2-hydroxyethyl)amine, or tri-(2-hydroxyethyl)amine; N-methyl-D-glucamine; and amino acids such as aR8inine, lysine, and the like. One skilled in the art will recognize that, e.g., acid addition salts of a compound of formula I can be prepared by reaction of the compounds with the appropriate acid via a vAr1ety of known methods.
Compounds of formula I encompass all solvates of compounds of formula I. “Solvates” are known in the art and are considered to be a combination, physical association and/or solvation of a compound of formula I with a solvent molecule, e.g., a disolvate, monosolvate or hemisolvate when the ratio of the solvent molecule to the molecule of the compound of formula I is 2:1, 1:1 or 1:2, respectively. This physical association involves varying degrees of ionic and covalent bonding, including hydrogen
bonding. In certain instances, the solvate can be isolated, for example when one or more solvent molecules are incorporated into the crystal lattice of a crystalline solid. Thus, “solvate,” as used herein, encompasses both solution-phase and isolatable solvates. A compound of formula I of the invention may be present as a solvated form with a pharmaceutically acceptable solvent, such as water, methanol, ethanol, and the like, and it is intended that the invention include both solvated and unsolvated compound of formula I forms. As “hydrate” relates to a particular subgroup of solvates, i.e., where the solvent molecule is water, hydrates are included within the solvates of the invention. Preparation of solvates is known in the art. For example, M. Caira et al, J. Pharmaceut. Set, 93(3):601-611 (2004), describes the preparation of solvates of fluconazole with ethyl acetate and with water. Similar preparations of solvates, hemisolvate, hydrates, and the like are described by E.C. van Tonder et al, AAPS Pharm. Sci. Tech., 5(1), article 12 (2004), and A.L. Bingham et al, Chem. Commun., 603-604 (2001). A typical, non-limiting, process involves dissolving the compound of formula I in a desired amount of the desired solvent (oR8anic, water or mixtures thereof) at temperatures above about 20°C to about 25°C, cooling the solution at a rate sufficient to form crystals, and isolating the crystals by known methods, e.g., filtration. Analytical techniques, for example, infrared spectroscopy, can be used to show the presence of the solvent in a crystal of the solvate.
The invention disclosed herein is also meant to encompass all prodrugs of the compounds of the invention. “Prodrugs” are known in the art and, while not necessAr1ly possessing any pharmaceutical activity as such, are considered to be any covalently bonded carrier(s) that releases the active parent drug in vivo. In general, such prodrugs will be a functional derivative of a compound of formula I, II and/or EH which is readily convertible in vivo, e.g., by being metabolized, into the required compound of formula I, II and/or HI. Conventional procedures for the selection and preparation of suitable prodrug derivatives are described in, for example, Design of Prodrugs, H. Bundgaard ed., Elsevier (1985); “Drug and Enzyme TaR8eting, Part A,” K. Widder et al. eds., Vol. 112 in Methods in Enzymology, Academic Press (1985); Bundgaard, “Design and Application of Prodrugs,” Chapter 5 (pp. 113-191) in A Textbook of Drug Design and Development, P. Krogsgaard-Larsen and H. Bundgaard eds., Harwood Academic Publishers (1991); Bundgaard et al, Adv. Drug Delivery Revs. 8:1-38 (1992); Bundgaard et al, J. Pharmaceut. Sci. 77:285 (1988); and Kakeya et al, Chem. Pharm Bull. 32:692 (1984).
In addition, one or more hydrogen, carbon or other atoms of a compound of formula I can be replaced by an isotope of the hydrogen, carbon or other atoms. Compounds of formula I include all radiolabeled forms of compounds of formula I. Such a “radiolabeled,” “radiolabeled form”, and the like of a compound of formula I, each of which is encompassed by the invention, is useful as a research and/or diagnostic tool in metabolism pharmacokinetic studies and in binding assays. Examples of isotopes that can be incorporated into a compound of formula I of the invention include isotopes of hydrogen, carbon, nitrogen, oxygen, phosphorous, sulfur, fluorine and chlorine, such as 2H, 3H, 13C, 14C, 15N, 180,170,31P, 32P, 35S, 18F, and 36C1, respectively. Radiolabeled compounds of the invention can be prepared by methods known in the art. For example, tritiated compounds of formula I can be prepared by introducing tritium into the particular compound of Formula I, for example, by catalytic dehalogenation with tritium. This method may include reacting a suitably halogen-substituted precursor of a compound of Formula I with tritium gas in the presence of a suitable catalyst, for example, Pd/C, in the presence or absence of a base. Other suitable methods for prepAr1ng tritiated compounds can be found in Filer, Isotopes in the Physical and Biomedical Sciences, Vol. 1, Labeled Compounds (Part A), Chapter 6 (1987). 14C-labeled compounds can be prepared by employing starting materials having a 14C carbon.
A compound of formula I can contain one or more asymmetric centers and may thus give rise to enantiomers, diastereomers, and other stereoisomeric forms. Compounds of formula I encompass all such possible forms as well as their racemic and resolved forms or any mixture thereof. When a compound of formula I contains an olefinic double bond or other center of geometric asymmetry, and unless specified otherwise, it is intended to include all “geometric isomers,” e.g., both E and Z geometric isomers. All “tautomers,” e.g., ketone-enol, amide-imidic acid, lactam-lactim, enamine-imine, amine-imine, and enamine-enimine tautomers, are intended to be encompassed by the invention as well.
As used herein, the terms “stereoisomer,” “stereoisomeric form”, and the like are general terms for all isomers of individual molecules that differ only in the orientation of their atoms in space. It includes enantiomers and isomers of compounds with more than one chiral center that are not mirror images of one another (“diastereomers”).
The term “chiral center” refers to a carbon atom to which four different groups are attached.
The term “enantiomer” or “enantiomeric” refers to a molecule that is nonsuperimposeable on its mirror image and hence optically active where the enantiomer rotates the plane of polAr1zed light in one direction and its mirror image rotates the plane of polAr1zed light in the opposite direction.
The term “racemic” refers to a mixture of equal parts of enantiomers which is optically inactive.
The term “resolution” refers to the separation or concentration or depletion of one of the two enantiomeric forms of a molecule.
Optical isomers of a compound of formula I can be obtained by known techniques such as chiral chromatography or formation of diastereomeric salts from an optically active acid or base.
Optical purity can be stated in terms of enantiomeric excess (% ), which is determined by the formula:
(FORMULA REMOVED)
The phrase “effective amount,” when used in connection with a compound of formula I means an amount effective for: (a) treating or preventing a Condition; or (b) inhibiting TRPV1 function in a cell.
The phrase “effective amount,” when used in connection with the another therapeutic agent means an amount for providing the therapeutic effect of the therapeutic agent.
The phrase “therapeutic index,” describes the gap between the dose that is effective, and the dose that induces adverse effects.
When a first group is “substituted with one or more” second groups, one or more hydrogen atoms of the first group is replaced with a corresponding number of second groups. When the number of second groups is two or greater, each second group can be the same or different. In one embodiment, the number of second groups is one or two. In another embodiment, the number of second groups is one.
The term “MeOH” means methanol, Le., methyl alcohol.
The term “EtOH” means ethanol, Le., ethyl alcohol.
The term “f-BuOH” means terf-butyl alcohol, Le., 2-methylpropan-2-ol.
The term “THF’ means tetrahydrofuran.
The term “DMF’ means N, N-dimethylformamide.
The term “DCM” means methylene chloride, i.e., dichloromethane.
The term “DCE” means dichloroethane.
The term “DME” means 1,2-dimethoxyethane, i.e., ethylene glycol dimethyl ether.
The term “EtOAc” means ethyl acetate.
The term “NH4OH” means ammonium hydroxide.
The term “TEA” means triethylamine.
The term “MeCN” means acetonitrile.
The term “NaH” means sodium hydride.
The term “AcOH” means acetic acid.
The term “DIEA” means N,N-diisopropylethylamine or N-ethyldiisopropylamine, i.e., N-ethyl-iV-isopropylpropan-2-amine.
The term “DMSO” means dimethylsulfoxide, i.e., methylsulfinylmethane.
The term “DAST” means (diethylamino) sulfur trifluoride.
The term “LiHMDS” means lithium hexamethyldisilaZ1de.
The term “BuLi” means butyl lithium.
The term “DPPP” means l,3-bis(diphenylphosphino)propane.
The term “BOC” means fert-butyloxycarbonyl:
(FORMULA REMOVED)
The term “TBS” means tert-butyldimethylsilyl:
(FORMULA REMOVED)
The term “TsOH” means p-toluenesulfonic acid or toluene-4-sulfonic acid. The term “TMSBr” means trimethylsilyl bromide or (CH3)3SiBr.
The term “TMSC1” means trimethylsilyl chloride or (CH3)3SiCl.
The term “IBD” means inflammatory-bowel disease.
The term “IBS” means irritable-bowel syndrome.
The term “ALS” means amyotrophic lateral sclerosis.
The phrases “treatment of,” “treating” and the like include the amelioration or cessation of a Condition or a symptom thereof.
In one embodiment, treating includes inhibiting, for example, decreasing the overall frequency of episodes of a Condition or a symptom thereof.
The phrases “prevention of,” “preventing” and the like include the avoidance of the onset of a Condition or a symptom thereof.
5.5 METHODS FOR MAKING COMPOUNDS OF FORMULA I
The compounds of formula I can be made using conventional oR8anic synthesis or by the illustrative methods shown in the schemes below.
5.5.1 Methods for Making Compounds of Formula I where W is C and the Dashed Line is Absent
The compounds of formula I where W is C and the dashed line is absent, i.e., “Piperidine Compounds,” can be made using conventional oR8anic synthesis or by the illustrative methods shown in the schemes below.
5.5.1.1 Methods for Making the Piperidine Compounds where X is O and R is-OH or-F
The compounds of formula I where X is O and R4 is -OH can be obtained by the illustrative method shown below in scheme 1.1:
(SCHEME REMOVED)
where Ar2, R1, R2, R3, n, m, and p are as defined for compounds of formula I and L is a halogen.
To a solution of 2a-d in the presence of tert-butyl lithium (1.7M in heptane, 6.45mL, 11.12mmol) in THF (20mL) at -78°C is added dropwise compound 1 in anhydrous THF (lOmL). The reaction mixture is stirred at -78°C for about 3h and is quenched with aqueous NH4CI at about 0°C, and then the oR8anic and aqueous layers are separated. The aqueous layer is extracted with THF, the oR8anic portions are combined, and dried (Na2SO4). The resulting solution is concentrated under reduced pressure to provide a residue. The residue is chromatographed using silica gel column chromatography that is eluted with ethyl acetate/hexane (gradient elution from 30:70 to 70:3O) to provide a Piperidine Compound where X is O and R4 is -OH (3a-d).
The compounds of formula 2a-d are commercially available or can be prepared by methods known in the art.
Compound 1 can be obtained by reacting 4 with an isocyanate as shown below in scheme 1.2:
Scheme 1.2
(SCHEME REMOVED)
where R3, and m are as defined above and R is Ai2.
Compound 4 (20mmol) in chloroform is added to a solution of an isocyanate of formula R-NCO in chloroform (30mL) at about 25°C. The resultant reaction mixture is stirred for about 3 h at about 25°C then concentrated under reduced pressure to provide a residue. The residue is suspended in THF (50mL) and 4N HC1 (50mL) is added to the resulting solution. The reaction mixture allowed to stir for about 12h. The reaction mixture is then poured into water (200mL), and the pH is adjusted to 10 or greater with aqueous potassium carbonate base. The resulting solution is extracted with ethyl acetate and the ethyl acetate layers are combined, dried (MgSO4) and concentrated under
reduced pressure to provide a residue that can be chromatographed using flash chromatography on a silica gel column eluted with ethyl acetate/hexane (gradient elution from 30:70 to 70:3O) to provide compound 1.
Isocyanates of formula Ar2-NCO are commercially available or are can be prepared by reacting an amine Ar2NH2 with phosgene according to known methods (See, e.g., H. Eckert and B. Foster, Angew. Chem, Int. Ed. Engl, 26, 894 (1987); H. Eckert, Ger. Offen. DE 3 440 141; Chem, Abstr. 106, 4294d (1987); and L. Contarca et al, Synthesis, 553-576 (1996). For example, an amine NNfk can be reacted with triphosgene as shown below.
(SCHEME REMOVED)
Typically a solution of triphosgene (about 0.3 equivalents or 0.3eq.) in DCM (about 0.3M) is slowly added to a stirred solution of the amine (about l.Oeq.) in DCM (about 0.3M) at about 25°C. The reaction mixture is then stirred at about 25°C for about 10 min. and the temperature is raised to about 70°C. After stirring at 70°C for 3h., the reaction mixture is cooled to 25°C, filtered, and the filtrate is concentrated to provide the isocyanate.
Cyclic acetals of formula 4 are commercially available or can be prepared by methods known in the art.
The Piperidine Compounds where X is O and R4 is -OH can also be obtained by the illustrative method shown below in schemes 1.3 and 1.4:
(SCHEME REMOVED)
where Ri, R2, R3, n, m, and p are as defined above, L is a halogen, and NP is a nitrogen protecting group (see, for example, T.W. Greene et al, Protective Groups in OR8anic Synthesis 494-653 (3ded. 1999).
To a solution of f-BuLi (1.7M in heptane, 18.4mL, 31.3mmol) or n-BuLi (1.6M in heptane, 19.5mL, 31.3mmol) in ether (30mL) is added dropwise a solution of a compound of formula 2a-d (31.3mmol) in ether (20mL) at -78°C under a nitrogen
atmosphere. The resulting solution is stirred at -78°C for about 1 hour. To the resulting solution is added dropwise a compound of formula 5 (25.0mmol) dissolved in ether (20mL) at -78°C and the resulting mixture is allowed to stir at about -50°C for 3 h. The reaction mixture is then quenched with aqueous NH4CI at 0°C and the reaction mixture is extracted with ether. The oR8anic portions are combined, dried (Na2SO4), and concentrated under reduced pressure to provide a residue that can be chromatographed using flash chromatography on a silica gel column eluted with ethyl acetate/hexane (gradient elution 30/70 to 70/3O) to provide a compound of formula 6a-d. The nitrogen protecting group is then removed to provide a compound of formula 7a-d, respectively. The compound of formula 7a-d is then reacted with an isocyanate of formula R-NCO to provide the compound of formula 3a-d, as shown below in scheme 1.4:

(SCHEME REMOVED)
where Ax2, R1, R2, R3, n, m, and p are as defined above.
To a solution of a compound of formula 7a-d (lmmol) in DCM (lmL) is added dropwise a solution of isocyanate AT2-NCO (lmmol) in DCM (lmL) at the about 25°C. The resultant mixture is allowed to stir at 25°C for 3h and concentrated under reduced pressure to provide a residue that can be chromatographed using a silica gel column eluted with ethyl acetate/hexane (gradient elution 10/90 to 70/3O) to provide a compound of formula 3a-d.
A compound of formula 5 is commercially available or can be prepared by protecting the nitrogen atom of a compound of formula 8, shown below:
(FORMULA REMOVED)
Compounds of formula 8 are commercially available or can be prepared by methods known in the art.
Any nitrogen protecting group known in the art can be used to protect the nitrogen atom in the compound of formula 8. Suitable protecting groups are described in T.W. Greene et al, Protective Groups in OR8anic Synthesis, 494-653 (3d ed. 1999). Isocyanates of formula AT2-NCO are commercially available or can be prepared as described above.
5.5.1.2 Methods for Making Piperidine Compounds where X is S and Riis-OH
The Piperidine Compound where X is S and R4 is -OH can be obtained by a method analogous to that described above in Scheme 1.1 to provide the Piperidine Compounds where X is O and R» is -OH (3a-d) except that a compound of formula 9, shown below,
(FORMULA REMOVED)
where R3 and m are as defined above, is used in place of compound 1.
The compound of formula 9 can be obtained by a method analogous to that described above in Scheme 1.2 to provide 1 except that an isothiocyanate of formula Ar2-NCS is used in place of the isocyanate AT2-NCO.
Isothiocyanates are commercially available or can be prepared by reacting an amine of formula Ar2NH2 with thiophosgene as shown in the scheme below (See, e.g., Tett. Lett., 41(37), 7207-7209 (200O); OR8. Prep. Proced., Int., 23(6), 729-734 (1991); /. Heterocycle Chem., 28(4), 1091-1097 (1991);/ Fluorine Chem., 41(3), 303-310 (1988); and Tett. Lett., 42(32), 5414-5416 (2001).
(FORMULA REMOVED)
Alternatively, isothiocyanates of formula AT2-NCS can be prepared by reacting an amine of formula AT2NH2 with carbon disulfide in the presence of triethylamine (TEA) in THF, followed by reaction with hydrogen peroxide and hydrochloric acid in water as shown in the scheme below (See, e.g., J. OR8. Chem, 62(13), 4539-4540 (1997)).
(FORMULA REMOVED)
The Piperidine Compound where X is S and R4 is -OH can be obtained by a method analogous to that described above in Schemes 1.3 and 1.4 to provide the Piperidine Compounds where X is O and R4 is -OH (3a-d) except that an isothiocyanate of formula AT2-NCS is used in place of the isocyanate of formula N-NCO.
5.5.1.3 Methods for Making Piperidine Compounds where X is N-CN and R4 is-OH
The Piperidine Compound where X is N-CN and R4 is -OH can be obtained as shown below in scheme 1.5:

(SCHEME REMOVED)
where Ar1, Ar2, R3 and m are as defined above.
A compound of formula 10 is reacted with an amine of formula AT2-NH2 in an aprotic oR8anic solvent such as diethyl ether, di-n-propyl ether, THF, DCM, or toluene at a temperature of from about 25°C to about the reflux temperature of the solvent for a peR10d of from about 0.5 h to about 24 h to provide the Piperidine Compound where X is N-CN and R4 is -OH. In one embodiment, the aprotic oR8anic solvent is di-n-propyl ether. In another embodiment, a reaction mixture of di-n-propyl ether, a compound of formula 10 and the amine of formula AT2-NH2 is heated at a temperature of about 70° to about 80° C. In another embodiment, the reaction mixture of di-n-propyl ether, a compound of formula 10 and the amine of formula AT2-NH2 is heated at a temperature of about 75°C for about 12 h.
The compound of formula 10 can be obtained as shown below in scheme 1.6:
(SCHEME REMOVED)
where Ar1 is defined above for the Piperidine Compounds.
A compound of formula 7a-d is reacted with diphenyl cyanocarbonimidate 35 (commercially available from Sigma-Aldrich, St. Louis, MO) in an aprotic solvent such as diethyl ether, di-n-propyl ether, THF, DCM, or toluene to provide the compound of formula 10. In one embodiment, the aprotic solvent is DCM and the reaction mixture of the compound of formula 7a-d and diphenyl cyanocarbonimidate 35 is allowed to react at about 25°C. In another embodiment, the aprotic solvent is toluene and the reaction mixture of the compound of formula 7a-d and diphenyl cyanocarbonimidate 35 is allowed to react at about 110°C. The compound of formula 7a-d and diphenyl cyanocarbonimidate 35 is typically allowed to react for a peR10d of about 0.5 h to about 24 h. Typically the compound of formula 10 is used without further purification.
The compounds of formula 7a-d can be obtained as described above in section 5.5.1.1.
5.5.1.4 Methods for Making Piperidine Compounds where X is N-OH and Rtis-OH
The Piperidine Compound where X is N-OH and R4 is -OH can be prepared by a method analogous to that described above in Scheme 1.1 to provide the Piperidine Compounds where X is O and R4 is -OH (3a-d) except that a compound of formula 11, shown below,
(FORMULA REMOVED)
where R3 and m are as defined above, R is Ar2, and P is an oxygen/hydroxyl protecting group, is used in place of compound 1 followed by removal of the oxygen/hydroxyl protecting group.
The compound of formula 11 can be obtained as shown below in scheme 1.7:
(SCHEME REMOVED)
where R3 and m are as defined above, R is Ar2, and OP is an oxygen/hydroxyl protecting group.
A compound of formula 12 (about 0.3mmol) is reacted with hydroxylamine (50 weight percent in water, about 5.8mmol) in about 1.5mL of ethanol with stirring at a temperature of about 80°C for about 2 h. The mixture is then concentrated under reduced pressure to provide a compound of formula 13. The hydroxyl group of the compound of formula 13 is then protected using an oxygen/hydroxyl protecting group to provide the compound of formula 11. An oxygen/hydroxyl protecting group known in the art can be used to protect the oxygen atom in the compound of formula 13. Suitable oxygen/hydroxyl protecting groups are disclosed in T.W. Greene et ah, Protective Groups in OR8anic Synthesis 17-200 (3d ed. 1999). In one embodiment, the compound of formula 11 is further treated using column chromatography or recrystallized.

193 The compound of formula 12 can be obtained as shown below in scheme 1.8:
(SCHEME REMOVED)
where R3 and m are as defined above and R is Ar2.
A solution of a compound of formula 9 (about 0.6mmol), obtained as described above, in DCM is reacted with iodomethane (about 0.9mmol) in about 3mL of tetrahydrofuran with stirring at about 25°C for about 12 h. Excess iodomethane is removed from the mixture under reduced pressure. A solution of triethylamine (about 1.74mmol) in about 2.5mL of ethyl acetate is then added to the mixture and the mixture is allowed to stir for about 2 h. The mixture is then concentrated under reduced pressure to provide the compound of formula 12 that can then be further treated if desired. In one embodiment, the compound of formula 12 is further treated using column chromatography or recrystallization.
5.5.1.5 Methods for Making Piperidine Compounds where X is N-OR™ and Rdis-OH
The Piperidine Compound where X is N-OR10 and R4 is -OH can be obtained by a method analogous to that described above in Scheme 1.1 to provide the Piperidine Compounds where X is O and R4 is -OH (3a-d) except that a compound of formula 14, shown below,
(FORMULA REMOVED)
where R3, R10 and m are as defined above and R is Ar2 is used in place of compound 1.
The compound of formula 14 can be prepared by reacting the compound of formula 13, obtained as described above in Scheme 1.7, with L-(C1-C4)alkyl, where L is -I, -Br, -C1, or -F in the presence of sodium hydride in DMF at about 25°C. In one embodiment, L is -I or -Br.
5.5.1.6 Methods for Making Piperidine Compounds where Rt is a Group Other Than -OH
The Piperidine Compounds where R4 is -halo, -OCF3, -(CiC6)alkyl, -CH2OH, -CH2C1, -CH2Br, -CH2I, -CH2F, -CH(halo)2, -CF3, -OR10, -SR10, -COOH, -COOR10, -C(O)R10, -C(O)H, -OC(O)R10, -OC(O)NHR10, -NHC(O)R13, -SO2R10, -C0N(R13)2 or -NO2 can be obtained from the Piperidine Compounds where R» is -OH.
The Piperidine Compounds where R4 is -F can be obtained by reacting a Piperidine Compound where R4 is -OH with fluorinating reagents such as DAST, Deoxo-Fluor, SF4, HF, KF, CsF, Yarovenko’s reagent, Ishikawa’s reagent, according to the procedure described in M. Schlosser et al, Tetrahedron 52(241:8257-8262 (1996).
The Piperidine Compounds where R4 is -CI can be obtained by reacting a Piperidine Compound where R4 is -OH with SOC12 or PCI5 according to the procedure described in/. Amer. Chem. Soc. 12O(41:673-679 (1998) or with CH3COCI according to the procedure described in Tett. Lett. 4K47V.9037-9042 (200O).
The Piperidine Compounds where R4 is -Br can be obtained by reacting a Piperidine Compound where R4 is -OH with pyridine and SOBr2 according to the procedure described in J. OR8anometallic Chemistry 627(2):179-88 (2001) or by
reacting a Piperidine Compound where R4 is -OH with pyridine and PPh3/Br2 according to the procedure described in J. Amer. Chem. Soc. U2 (9):3607-14 (199O).
The Piperidine Compounds where R4 is -I can be obtained by reacting a Piperidine Compound where R4 is -OH with HI in acetic anhydride according to the procedure described in J. Amer. Chem. Soc. 87(3):539-542 (1965).
The Piperidine Compounds where R4 is -CH3 can be obtained by reacting a Piperidine Compound where R4 is -OH with PCI5 and CH3TiCl3 according to the procedure described in Angewandte Chemie, 92(11), 933-4 (198O).
The Piperidine Compounds where R4 is -(C1-C6)alkyl can be obtained by reacting a Piperidine Compound where R4 is -OH with p-toluenesulfonic acid in toluene followed by n-butyl lithium and X-(C1-C6)alkyl, where X is a halogen, according to the procedure described in Charles J. Barnett, et al, J. OR8. Chem., 54(2O) 4795-4800 (1989) followed by hydrogenating the product according to the procedure described in Thomas E. D’ Ambra et al, J. OR8. Chem., 54(23) 5632-5 (1989) as described below.
(FORMULA REMOVED)
The Piperidine Compounds where R4 is -CH2OH can be obtained by reacting a Piperidine Compound where R4 is -COOH with L1AIH4 according to procedures known in the art. The Piperidine Compounds where R4 is -CH2OH can be obtained by reacting a Piperidine Compound where R4 is -C(O)H with NaBILt according to procedures known in the art.
The Piperidine Compounds where R4 is -COOH can be obtained by reacting a Piperidine Compound where R4 is -CN with KOH according to procedures known in the art.
The Piperidine Compounds where R4 is -CN can be obtained by reacting a Piperidine Compound where R4 is -OH with KCN and SOCI2 according to the procedure described in Armyanskii Khimicheskii Zhurnal. 3O(9):723-727 (1977).
The Piperidine Compounds where R4 is -C(O)H can be obtained by reacting a Piperidine Compound where R4 is -CN with di-i’so-butylaluminum hydride (DIBAL-H) according to procedures known in the art.
The Piperidine Compounds where R4 is -OCF3 can be obtained by reacting a Piperidine Compound where R4 is -OH with CS2; methyl idodide; and bromosuccinimide and pyridine/HF in DCM according to the procedure described in Chemical Communications (Cambridge) 3_:309-310 (1997) or Bulletin of the Chemical Society of Japan, 73(2):471-484 (200O).
The Piperidine Compounds where R4 is -CH2CI can be obtained by reacting a Piperidine Compound where R4 is -CH2OH, obtained as described above, with PCI5 according to the procedure described in J. Amer. Chem. Soc, 12O(4):673-679 (1998).
The Piperidine Compounds where R4 is -CH2Br can be obtained by reacting a Piperidine Compound where R4 is -CH2OH, obtained as described above, with SOBr2 according to the procedure described in J. OR8anomet. Chem., 627(2)-.179-188 (2001) or with PPh3/Br2 according to the procedure described in J. Amer. Chem. Soc, 112(9):3607-3614 (199O).
The Piperidine Compounds where R4 is -CH2F can be obtained by reacting a Piperidine Compound where R4 is -CH2OH, obtained as described above, with leq. of DAST according to the procedure described in M. Schlosser et al„ Tetrahedron 52(24):8257-8262 (1996) and OR8anic Letters. 3I17):2713-2715 (2001).
The Piperidine Compounds where R4 is -CH2I can be obtained by reacting a Piperidine Compound where R4 is -CH2OH, obtained as described above, with PPI13/I2 according to the procedure described in OR8anic Process Research and Development 6(21:190-191 (2002).
The Piperidine Compounds where R4 is -CH(halo)2 can be obtained by reacting a Piperidine Compound where R4 is -C(O)H, obtained as described above, with (F3CSO2)20 followed by Mg(halo)2 in CS2 according to the procedure described in Synthesis 12:1076-1078 (1986).
The Piperidine Compounds where R4 is -CHF2 can also be obtained by reacting a Piperidine Compound where R4 is -C(O)H, obtained as described above, with 2eq. of DAST according to the procedure described in M. Schlosser et al, Tetrahedron 52(24):8257-8262 (1996) and OR8anic Letters. 3(17):2713-2715 (2001).
The Piperidine Compounds where R4 is -CF3 can be obtained by reacting a Piperidine Compound where R4 is -C(O)H, obtained as described above, with copper (I)
iodide and sodium trifluoroacetate according to the procedure described in U.S. Patent No. 4,866,197 to Bauman.
The Piperidine Compounds where R4 is -OR10 can be obtained by reacting a Piperidine Compound where R4 is -OH, obtained as described above, with R10-X where X is a halogen in the presence of NaOH according to the procedure described in European Journal of Medicinal Chemistry 24(4):391-396 (1989).
The Piperidine Compounds where R4 is -SR13 can be obtained by reacting a Piperidine Compound where R4 is -OH, obtained as described above, with R13-SH according to the procedure described in U.S. Patent No. 4,409,229 to Ong et al. or Journal of Medicinal Chemistry 24QV.74-79 (1981).
The Piperidine Compounds where R4 is -COOR10 can be obtained by esterifying a Piperidine Compound where R4 is -COOH, obtained as described above, with R10-OH. Methods to esterify carboxylic acids are known in the art.
The Piperidine Compounds where R4 is -OC(O)R10 can be obtained by reacting a Piperidine Compound where R4 is -OH, obtained as described above, with R10C(O)Cl according to the procedure described in European Journal of Medicinal Chemistry 24(4}:391-396 (1989). The acid chlorides, R10C(O)Cl, can be prepared from the corresponding carboxylic acid, R10COOH, using procedures known in the art.
The Piperidine Compounds where R4 is -NHC(O)R13 can be obtained by reacting a Piperidine Compound where R4 is -OH with R10CN in the presence of H2SO4 followed by K2CO3 in DCM as described in BiooR8anic and Medicinal Chemistry Letters 1O(17V.2001-2014 (200O).
The Piperidine Compounds where R4 is -OC(O)NH2 can be obtained by reacting a Piperidine Compound where R4 is -OH with CI3CCONCO in DCM at 0°C with stirring for about 2 h and then adding to the resulting mixture K2CO3 in methanol-water and allowing the resulting mixture to stir for about 4 h at 0°C and about 2 h at about 25°C according to the procedure described in Christopher P. Holmes et al, J. OR8. Chem., 54(11:98-108 (1989).
The Piperidine Compounds where R4 is -OC(O)NHR10 can be obtained by reacting a Piperidine Compound where R4 is -OH with an isocyanate of formula R10NCO in refluxing THF for about 24 h at about 25°C according to the procedure described in Andre Hallot et al, J. Med. Chem., 29(3):369-375 (1986).
The Piperidine Compounds where R4 is -SO2R10, -NO2, -CN, -COR10, -COOR10, and CON(R13)2 can be prepared by the illustrative methods described below.
A compound of formula 15 is reacted with a compound of formula 16a-d in the presence of a base according to the procedure described in Journal of Heterocycle Chemistry, 23(l):73-75 (1986) or OR8anic Chemistry and Procedures International 28(4):478-480 (1996) to provide a compound of formula 17a-d, as described below in scheme 1.9:
(SCHEME REMOVED)
where Rh R2, R3, n, m, and p are as defined above; Y is -SO2R10, -NO2, -CN, -COR10, -COOR10, or CON(R13)2; and NP is a nitrogen protecting group.
The nitrogen protecting group is then removed from the compound of formula 17a-d to provide a compound of formula 18a-d. Any nitrogen protecting group known in the art can be used to protect the nitrogen in the compound of formula 15.
To provide the Piperidine compounds of formula I where X is O and R4 is -SO2R10, -NO2, -CN, -COR10, -COOR10, or CON(R13)2, the compound of formula 18a-d is then reacted with an isocyanate of formula R-NCO according to a procedure analogous to that described above in scheme 1.4 and described below in Scheme 1.10:

(SCHEME REMOVED)
where Ru R2, R3, n, m, and p are as defined above; Y is -SO2R10, -NO2, -COR10, or -CON(R13)2; and R is Ar2.
A compound of formula 18a-d is reacted with a compound of formula R-NCO according to a procedure analogous to that described above in Scheme 1.4.
To provide the Piperidine Compounds where X is S and R4 is -SO2R10, -NO2, -CN, -COR10, -COOR10, or CON(R13)2, the compound of formula 18a-d is reacted with an isothiocyanate of formula R-NCS according to a procedure analogous to that described above in Section 5.5.1.2.
To provide the Piperidine Compounds where X is N-CN and R4 is -SO2R10, -NO2, -CN, -COR10, -COOR10, or CON(R13)2, the compound of formula 18a-d is reacted with diphenyl cyanocarbonimidate 35 and then an amine of formula R-NH2 according to a procedure analogous to that described above in Section 5.5.1.3.
To provide the Piperidine Compounds where X is N-OH and R4 is -SO2R10, -NO2, -CN, -COR10, -COOR10, or CON(R13)2, the Piperidine Compound where X is S and R4 is -SO2R10, -NO2, -CN, -COR10, -COOR10, and CON(R13)2 is reacted with methyl iodide according to a procedure analogous to that described above in scheme 1.8 to provide a compound of formula 19,
(FORMULA REMOVED)
where Ar1, R3, m, and Y are as defined above and R is Ar2.
The compound of formula 19 is then reacted with hydroxylamine in ethanol according to a procedure analogous to that described above in Scheme 1.8 to provide the Piperidine Compounds where X is N-OH and R4 is -SO2R10, -NO2, -CN, -COR10, -COOR10, or CON(R13)2.
To provide the Piperidine Compounds where X is N-OR10 and R4 is -SO2R10, -NO2, -CN, -COR10, -COOR10, or CON(R13)2, the Piperidine Compound where X is NOH andR4 is -SO2R10, -NO2, -CN, -COR10, -COOR10, and CON(R13)2 is reacted with X-(C1-C4)alkyl, where X is -I, -Br, -C1, or -F in the presence of triethylamine according to a procedure analogous to that described above in Section 5.5.1.6.
The compound of formula 15 is commercially available or can be prepared by methods known in the art.
The compounds of formula 16a-d where Y is -SO2R10 can be obtained by reacting a compound of formula 16a-d, where Y is a halogen, with R10SO2H according to the procedure described in J. OR8. Chem. 67(13):4387-4391 (2002) or international publication no. WO 02/48098.
The compounds of formula 16a-d where Y is -CN can be obtained by reacting a compound of formula 16a-d, where Y is a halogen, with potassium cyanide according to the procedure described in Farmaco 45£9}:945-953 (199O).
The compounds of formula 16a-d where Y is -COOR10 can be obtained by reacting a compound of formula 16a-d, where Y is a halogen, with (a) potassium cyanide, (b) water, and (c) R10OH and SO2CI according to the procedure described in Farmaco 45(9):945-953 (199O).
The compounds of formula 16a-d where Y is -COR10 can be obtained by reacting a compound of formula 16a-d, where Y is a halogen, with R10C(O)H and trimethylsilyl cyanide according to the procedure described in international publication no. WO 01/81333.
The compounds of formula 16a-d where Y is -CON(R13)2 can be obtained by reacting a compound of formula 16a-d, where Y is a halogen, with (a) potassium cyanide, (b) water, and (c) NH(RB)2 and SO2CI according to the procedure described in Farmaco 45(9):945-953 (199O).
The compounds of formula 16a-d where Y is -NO2 can be obtained by reacting a compound of formula 2a-d where X is -CH3 with NaNIk in liquid NH3 followed by CH3CH2CH3-ONO2 at a temperature of less than -33°C to provide a nitronate that is then reacted under acidic condition to provide the compound of formula 16a-d where Y is -NO2 according to the procedure described in H. Feuer et al., J. Am. Chem. Soc. 91(7): 1856-1857 (1969) and as described in scheme 1.11 below, where Ri, R2, n and p are as defined above.

(SCHEME REMOVED)
The compounds of formula 16a-d where Y is -halo are commercially available or can be prepared by methods known in the art.
Certain Piperidine Compounds can have one or more asymmetric centers and therefore exist in different enantiomeric and diastereomeric forms. A Piperidine Compound can be in the form of an optical isomer or a diastereomer. Accordingly, the invention encompasses Piperidine Compounds and their uses as described herein in the form of their optical isomers, diastereomers, and mixtures thereof, including a racemic mixture. Optical isomers of the Piperidine Compounds can be obtained by known techniques such as chiral chromatography or formation of diastereomeric salts from an optically active acid or base.
In addition, one or more hydrogen, carbon or other atoms of a Piperidine Compound can be replaced by an isotope of the hydrogen, carbon or other atoms. Such compounds, which are encompassed by the invention, are useful as research and diagnostic tools in metabolism pharmacokinetic studies and in binding assays.
5.5.1.7 Methods for Installing R2 Groups on An When R^ is O
The conversion of a halide, L to a vinyl group via a Suzuki cross-coupling reaction is exemplified in scheme 1.12 below, where Ri, R2, R4 and p are as defined
above, L is defined as -halo, and P is a nitrogen protecting group known in the art. While this example demonstrates the conversion when L is in the 5-position of the pyridyl ring of 20, the transformation can be carried out when L is in other positions on the aryl ring as well. Moreover, the same technique can be used when Arr is another pyridyl ring, pyrimidinyl, pyraZ1nyl or pyridaZ1nyl ring.
(SCHEME REMOVED)
To a degassed DMF solution of compound 20 (1.6 mmol) in a 100 mL round bottom flask, is added CsF (3.2 mmol), di-n-butyl vinyl boronic ester (0.388 mL, 1.76 mmol) and palladium diphenylphosphinoferrocene dichloride (Pd(DPPF)2Cl2,0.128 mmol). The resulting mixture is stirred at 100°C for 14 hr, then cooled to a temperature of about 25°C and diluted with 100 mL ethyl acetate, which was washed with brine (3 x 50 mL). The oR8anic layer was isolated, dried, and concentrated under reduced pressure. Silica gel column chromatography gives the product, 21.
Other techniques for the installation of the vinyl group are shown in schemes 1.13a and 1.13b. In scheme 1.13a, the first step involves the oxidation of a benzylic alcohol to an aldehyde. This is followed by a Wittig olefination, to yield the vinyl group. Once again, while this example demonstrates the conversion when the starting benzylic alcohol is in the 5-position of a pyridyl ring, similar conversions can be carried out at other positions. Moreover, the same technique can be used when Arr is another pyridyl ring, pyrimidinyl, pyraZ1nyl or pyridaZ1nyl.
(SCHEME REMOVED)
To a 500 mL round-bottom flask, manganese oxide (0.50 mol) is added to a solution of 22 (50.0 mmol) in anhydrous CH2C12 (150 mL). The resulting mixture is stirred at a temperature of about 25°C for 48 h and then the reaction mixture is filtered through CELITE and concentrated. The resulting mixture is chromatographed by silica gel column chromatography eluting with a gradient of ethyl acetate (0%-40%)/hexanes to provide aldehyde 23.
To a cooled 0°C, stirred slurry of methyltriphenylphosphonium bromide (10.0 g) in toluene (200 mL) is added potassium f-butoxide (3.07 g) portionwise to produce a yellow slurry. After 1 hr, the reaction mixture is cooled to -20°C, and 23 (22.72 mmol) dissolved in tetrahydrofuran (6 mL) is added dropwise to produce a purple colored slurry. The reaction mixture is heated to 0°C and stirred for additional 1 hr. Then the reaction mixture is treated with saturated aqueous brine (150 mL) and diluted with ethyl acetate (200 mL). The resulting oR8anic layer is washed with brine, dried over anhydrous sodium sulfate and concentrated under reduced pressure. The resulting product is chromatographed by silica gel column chromatography column, eluting with a gradient of ethyl acetate (0%-10%)/hexanes to provide product 24.
In scheme 1.13b, the first step involves the reduction of a benzylic ketone to a hydroxyl. This is followed by a dehydration reaction to yield the vinyl group. Once again, while this example demonstrates the conversion when the starting benzylic ketone

206
is in the 5-position of a pyridyl ring, similar conversions can be carried out at other positions. Moreover, the same technique can be used when Arr is another pyridyl ring, pyrimidinyl, pyraZ1nyl or pyridaZ1nyl.
Scheme 1.13b
(SCHEME REMOVED)
To a well-stirred suspension of 23 (665 g, 3.5 mol) in methanol (3.5L) at 0°C is added sodium borohydride (66.21 g, 1.75 mol) portionwise at a rate such that the reaction mixture temperature does not exceed 5°C. After the addition is complete, the reaction mixture is warmed to a temperature of about 25°C and stirred an additional 1 h. The reaction mixture is concentrated under reduced pressure and the residue mixed with 2L diethyl ether and 2L IN HC1. The layers are separated and the aqueous layer extracted twice with diethyl ether (250 mL for each extraction). The oR8anic portions are combined, dried (MgSO4), and concentrated under reduced pressure to provide 23a.
To a solution of 23a (311 g, 1.62 mol) in chlorobenzene (3 L) is added p-toluene sulfonic acid (431 g, 2.5 mol). The reaction mixture is heated to reflux, about 140°C, and water is removed concurrently. At the completion of the reaction, the mixture is concentrated under reduced pressure to about 500 mL, diluted with 2L of water, and extracted three times with ethyl acetate (1L for each extraction). The oR8anic portions are combined, dried (Na2S4), and concentrated under reduced pressure under mild
heating to provide a residue. The residue is added to 500 mL of methylene chloride and applied to the top of column packed with 2 kg silica eluted with a 0% to 10% gradient of ethyl acetate in hexane to provide 24.
Vinyl groups are highly versatile, because they are a synthetic handle that can be further modified. It is well known in synthetic oR8anic chemistry that olefin hydrolysis yields a benzylic hydroxyl group, hydroboration gives a primary hydroxyl group, ozonolysis gives an aldehyde or ketone, oxidation gives a carboxylic acid, olefin metathesis extends the chain, and dihydroxylation gives a 1,2-diol. Many additional olefin functionalization techniques are available to those skilled in oR8anic synthesis. Once functionalized, the group can undeR8o further transformations. Exemplified in scheme 1.14 is the vinyl group of 21 undeR8oing an asymmetric dihydroxylation.
208 Scheme 1.14
(SCHEME REMOVED)
In a 100 mL round bottom flask, AD-mix a (0.5 g) is added to a mixture of r-butanol and water (2mL/2mL) and the mixture is stirred at a temperature of about 25°C for 0.5 hr, and then cooled to 0°C. This solution is quickly poured into another ice chilled flask, which contains compound 21 (0.41 mmol). The mixture is stirred vigorously in an ice bath for 96 h, and then diluted with ethyl acetate (50 mL) and 2 mL saturated Na2S20s. The ethyl acetate layer is isolated, dried, and concentrated under reduced pressure with a rotary evaporator to provide 25a. The other enantiomer, can be synthesized by the reaction of 21 with AD-mix p to yield 25b. As demonstrated in scheme 1.14, the stereochemistry (R or 5) of the resulting diol, is dependent upon the
chirality of the ligand used in the AD mix as described in Sharpless el al.,J. OR8. Chem. ‘57:2768-2771 (1992). AD-mix is composed of the following components: potassium osmate (K20sO2(OH)4), potassium ferricyanide (KjFe^N)^), potassium carbonate (K2CO3), and the chiral ligands are shown in scheme 1.15.
Scheme 1.15
(SCHEME REMOVED)
The racemic diol, 25c, can be synthesized by methods known in the art, using osmium tetroxidc (OsC^) and N-methyl morpholine M-oxide (NMO) in an aqueous acetone solution.
5.5.2 Methods for Making Compounds of Formula I where W is C and the Dashed Line is Present
The compounds of formula I where W is C and the dashed line is present, i.e., “Tetrahydropyridyl Compounds,” can be made using conventional oR8anic synthesis or by the following illustrative methods shown in the schemes below.
5.5.2.1 Methods for Making the Tetrahydropyridyl Compounds Where X isO
The Tetrahydropyridyl Compounds where X is 0 can be obtained by the following illustrative method shown below in Schemes 2.1 and 2.2, where R3, Ar2, and m are as defined above.
Scheme 2.1
(SCHEME REMOVED)
Referring to scheme 2.1 above, compound 1 (about 3.6mmol) is dissolved in THF (lOOmL) and the resulting solution cooled to -78°C. To the cooled solution is added LiHMDS (8.75mmol) and the reaction mixture is stirred at -78°C for 2 h. Compound 26 (about 3.6mmol, Sigma-Akirich) is then added to the reaction mixture and the reaction mixture is stirred at -78°C for 2 h. The reaction mixture is then allowed to warm to 25°C and concentrated under reduced pressure to provide a compound of formula 27.
The compound of formula 27 is then reacted with a compound of formula 28a~d to provide the Tetrahydropyridyl Compound where X is O as shown below in scheme 2.2:
(SCHEME REMOVED)
where Ri, R2, R3, Ar1, n, m, and p are as defined above.
Pd(PPh3)4 (0.11 mmol) is dissolved in THF (about 50mL) and the compound of formula 27 (about 2.2mmol) is added to the resulting solution followed by a compound of formula 28a-d (about 6.6mmol as a 0.5M solution in THF).
The reaction mixture is then heated for 1 h at the reflux temperature of the solvent. The reaction mixture is allowed to cool to 25°C and concentrated under reduced pressure to provide the Tetrahydropyridyl Compound where X is 0. The Tetrahydropyridyl Compound where X is 0 can be further treated if desired. In one embodiment, the Tetrahydropyridyl Compound where X is O is chromatographed using silica gel column chromatography followed by trituration with ethyl acetate.
Where m =1, R3 is bonded to an sp3 carbon, and 27 is either racemic or a mixture of enantiomers, the resulting Tetrahydropyridyl Compound in scheme 2.2 will also be racemic or an enantiomeric mixture. If a single stereoisomer is desired, it is possible to use chiral separation techniques known in the art, such as chiral chromatography or chiral resolution, to isolate a single isomer.
Another technique that can be used to couple the tetrahydropyridyl group and An is the Suzuki cross-coupling reaction. This is accomplished by a catalyst mediated reaction of 2a with the tetrahydropyridyl borane, 29 as exemplified in scheme 2.3 below. While the reaction shown has Ar1 as a pyridyl group, the same technique can be used when Arr is a pyraZ1nyl (2b), pyrimidinyl (2c), pyridaZ1nyl (2d) or other pyraZ1nyl rings.
Scheme 2.3
(SCHEME REMOVED)
A 150 mL sealed vessel is chaR8ed with 2a (3.37 mmol), 29 (4.04 mmol), Pd(PPh3)2Cl2 (0,27 mmol), potassium carbonate (6.40 mmol), and a mixture of DME/EtOH/FbO (8 mL/4 mL/8 mL). The resulting mixture is puR8ed with nitrogen,
sealed, and heated at 90°C with a vigorous stirring. After 2 hrs, the reaction mixture is cooled to a temperature of about 25°C and diluted with EtOAc (50 mL). The oR8anic layer is washed with brine, dried (Na2SC4), and concentrated under reduced pressure. The residue is chromatographed by silica gel column chromatography with a gradient of ethyl acetate (0%-30%)/hexanes to provide product 30.
The boronate ester, 29 can be synthesized by the method demonstrated below in scheme 2.4.
Scheme 2.4
(SCHEME REMOVED)
Bis(pinacolato)diboron (333.6 mmol), diphenylphosphino ferrocene (9.1 mmol), palladium diphenylphosphinoferrocene dichloride (1:1 complex with dichloromethane) (9.1 mmol), and potassium acetate (909.9 mmol) are suspended in dry dioxane (900 mL) under aR8on with mechanical stirring. 4-(Nonafluorobutane-l-sulfonyloxy)-3,6-dihydro-2H-pyridine-l-carboxylic acid tert-butyl ester (303.3 mmol) in dry dioxane (500 mL) is added and the mixture is heated to 85°C for 16 h. The mixture is cooled, filtered through CELITE, and the filter cake is washed with dichloromethane (2L). The filtrate is concentrated under reduced pressure to provide a black solid. This is adsorbed onto silica gel (250g) and applied to the head of a 4” silica gel column, and it is then eluted with hexanes (5L) followed by 20:1 hexanes:ethyl acetate, and finally ethyl acetate (10L) to yield 29.
5.5.2.2 Methods for Making the Tetrahydropyridyl Compounds Where X
is_S
The Tetrahydropyridyl Compounds where X is S can be obtained by methods analogous to that described above in schemes 2.1 and 2.2 to provide the Tetrahydropyridyl Compounds where X is 0, except that an isothiocyanate of formula Ar2-NCS is used in place of the isocyanate Ar2-NCO.
5.5.2.3 Methods for Making the Tetrahydropyridyl Compounds Where X is
N-CN
The Tetrahydropyridyl Compounds where X is N-CN can be obtained as shown below in Schemes 2.5 and 2.6 where Ar2, R3, and m are as defined above.
Scheme 2.5
(SCHEME REMOVED)
A kctal of formula 31 (about 14mmol) is reacted with an amine of formula Ar-NH?. (about 14mmol) in an aprotic oR8anic solvent (about 7mL) such as diethyl ether, di-n-propyl ether, THF, DCM, or toluene at a temperature of from about 25°C to about the reflux temperature of the solvent for a peR10d of from about 0.5 h to about 24 h. The reaction mixture is-then concentrated under reduced pressure to provide a compound of formula 32. In one embodiment, the aprotic oR8anic solvent is di-n-propyl ether. In another embodiment, a reaction mixture of di-n-propyl ether, a compound of formula 31 and the amine of formula Ar-NHb is heated at a temperature of about 70° to about 80° C.
The compound of formula 32 is then dissolved in THF (about 20mL). About IN HCl in acetic acid (about 30mL) is added to the THF solution of the compound of formula 32 and the resulting mixture is heated at the reflux temperature of the solvent. Typically, the reaction mixture is heated at the reflux temperature of the solvent for about 3 h. The reaction mixture is then cooled and concentrated under reduced pressure to provide a residue that is dissolved in DCM. The DCM solution is then extracted with aqueous Na2C(>s. The aqueous and oR8anic layers are separated and the aqueous layer is extracted three times with DCM. The oR8anic portions are combined, dried (MgSC^), and concentrated under reduced pressure to provide a compound of formula 33. The compound of formula 33 can be further treated if desired. In one embodiment, the compound of formula 33 is chromatographed using silica gel column chromatography.
The compound of formula 33 (about 3.6mmol) is then dissolved in THF (about lOOmL) and the resulting solution cooled to about -78°C. To the cooled solution is added LiHMDS (about 8.75mmol) and the reaction mixture is stirred at about -78°C for about 2 h. A compound of formula 26 (about 3.6mmol, Sigma-Aldrich) is then added to the reaction mixture and the reaction mixture stirred at about -78°C for about 2 h. The reaction mixture is then allowed to warm to about 25°C and concentrated under reduced pressure to provide a compound of formula 34.
The compound of formula 34 is then reacted with a compound of formula 28a-d as shown below in scheme 2.6 below to provide the Tetrahydropyridyl Compound where X is N-CN.
216 Scheme 2.6
(SCHEME REMOVED)
where Ai2, R1, R2, R3, n, m, and p are as defined above.
Pd(PPh34 is dissolved in THF (about 50mL) and the compound of formula 34 (about 2.2mmol) is added to the resulting mixture followed by a compound of formula
28a-d (about 6.6mmol as a 0.5M solution in THF). The reaction mixture is then heated for about 1 h at the reflux temperature of the solvent. The reaction mixture is allowed to cool to about 25°C and concentrated under reduced pressure to provide the Tetrahydropyridyl Compound where X is N-CN. The Tetrahydropyridyl Compound where X is N-CN can be further treated if desired. In one embodiment, the Tetrahydropyridyl Compound where X is N-CN is chromatographed by silica gel column chromatography.
Where m =1, R3 is bonded to an sp3 carbon, and 34 is either racemic or a mixture of enantiomers, the resulting Tetrahydropyridyl Compound in scheme 2.6 will also be racemic or an enantiomeric mixtures. If a single stereoisomer is desired, it is possible to use chiral separation techniques known in the art, such as chiral chromatography or chiral resolution, to isolate a single isomer.
The compound of formula 31 can be obtained as shown below in scheme 2.7.
Scheme 2.7
(SCHEME REMOVED)
where R3, and m are as defined above.
Compound 4 is reacted with diphenyl cyanocarbonimidate 35 (Sigma-Aldrich) in an aprotic solvent such as diethyl ether, di-n-propy! ether, THF, DCM, or toluene to provide the compound of formula 31. In one embodiment, the aprotic solvent is DCM and the reaction mixture of compound 4 and diphenyl cyanocarbonimidate 35 is allowed to react at about 25°C. In another embodiment, the aprotic solvent is toluene and the reaction mixture of compound 4 and diphenyl cyanocarbonimidate 35 is allowed to react
at about 110°C. Compound 4 and diphenyl cyanocarbonimidate 35 are typically allowed to react for a peR10d of about 0.5 h to about 24 h.
The compounds of formula 28a-d can be obtained as described above by methods known in the art.
5.5.2.4 Methods for Making the TetrahydropyridYl Compounds Where X is N-OH
The Tetrahydropyridyi Compounds where X is N-OH can be obtained in a manner analogous to schemes 2.6 and 2.7 in section 5.4.2.3, which is shown in scheme 2.8.
Scheme 2.8
(SCHEME REMOVED)
where Ai-2, R1, R2, R3, n, m, and p are as defined above and P is an oxygen/hydroxyl protecting group.
The method for obtaining the Tetrahydropyridyl Compounds where X is N-OH as described above in scheme 2.8 is analogous to that described above in Schemes 2.5
and 2.6 to provide the Tetrahydropyridyl Compounds where X is N-CN except that a compound of formula 38 is used in place of the compound of formula 34.
The compound of formula 36 can be obtained as described below in scheme 2,9.
Scheme 2.9
(SCHEME REMOVED)
where Ai’2, R3, and m are as defined above and P is an oxygen/hydroxyl protecting group.
A compound of formula 40 (about 0.3mmol) is reacted with hydroxy lamine (50 weight percent in water, about 5.8mmol) in about 1,5mL of ethanol with stirring at a temperature of about 80°C for about 2 h. The mixture is then concentrated under reduced pressure to provide a compound of formula 41. The hydroxyl group of the compound of formula 41 is then protected using an hydroxyl protecting group to provide the compound of formula 36. Any hydroxyl protecting group known in the art can be used to protect the hydroxyl group in the compound of formula 41. Suitable hydroxyl protecting groups and methods for their removal are disclosed in T.W. Greene et al, Protective Groups in OR8anic Synthesis 17-200 (3d ed. 1999).
Where m ~1, Rj is bonded to an sp3 carbon, and 38 is either racemic or a mixture of enantiomers, the resulting Tetrahydropyridyl Compound in scheme 2.8 will also be racemic or enantiomeric mixtures. If a single stereoisomer is desired, it is possible to use chiral separation techniques known in the art, such as chiral chromatography or chiral resolution, to isolate a single isomer.
The compound of formula 40 can be obtained as shown below in scheme 2.10.
Scheme 2.10
(SCHEME REMOVED)
where Ar2, R3, and m are as defined above.
A solution of a compound of formula 42 (about 0.6mmol), obtained as described above in section 4.4.2.2, in DCM is reacted with iodomethane (about 0.9mmol) in about 3mL of tetrahydrofuran with stirring at about 25°C for about 12 h. Excess iodomethane is removed from the mixture under reduced pressure. A solution of triethylamine (about 1.74mmol) in about 2.5mL of ethyl acetate is then added to the mixture and the mixture is allowed to stir for about 2 h. The mixture is then concentrated under reduced pressure to provide the compound of formula 40 which can then be further treated if desired. In one embodiment, the compound of formula 40 is chromatographed using column chromatography or recrystallized.
5.5.2.5 Methods for Making the Tctrahydropyridyt Compounds Where X is N-OR.n
The Tetrahydropyridyi Compounds where X is N-OR10 can be obtained by reacting a Tetrahydropyridyi Compounds where X is N-OH, obtained as described above in Scheme 2.8, with L-(C1-C 5.5.3 Methods for Making Compounds of Formula I where W is N and the Dashed Line is Absent
The compounds of formula I where W is N and the dashed line is absent, i.e., “PiperaZ1ne Compounds,” can be made using conventional oR8anic synthesis or by the following illustrative methods shown in the schemes below.
5.5.3.1 Methods for Making PiperaZ1ne Compounds where X is O and An is a Benzothiazolyl Group
PiperaZ1ne Compounds where X is 0, Ar2 is a benzothiazolyl group, and R20 is -H, can be obtained by the following illustrative method shown in scheme 3.1:
23 Scheme 3.1
(SCHEME REMOVED)
where Arl5 R3, R8, R9 and m are as defined above.
A compound of formula 44 (about 2mmol) is dissolved in an aprotic oR8anic solvent (about 3mL). To the resulting solution is added a compound of formula 43 (about 2mmol) and the reaction mixture allowed to stir for about 10 min. The reaction mixture is concentrated under reduced pressure to provide the PiperaZ1ne Compounds where X is O, Ar2 is a benzothiazolyl group, and R20 is -H. Such PiperaZ1ne Compounds can be chromatographed on a silica column eluted with 5:95 ethyl acetate:hexane.
The compound of formula 44 can be obtained as shown below in scheme 3.2:
Scheme 3.2
(SCHEME REMOVED)
where R8 and R9 are as defined above.
A compound of formula 45 (about 0.75mmol) in an aprotic oR8anic solvent (about 0.04M) is cooled to about 0°C. To the cooled solution is slowly added a solution of a compound of formula 46 (about 0.75mmol) in an aprotic oR8anic solvent (about 0.4M). The reaction mixture is stirred at 0°C for about 5 min. and about 0.75mmol of triethylamine are added to the reaction mixture. The reaction mixture is then allowed to warm to a temperature of about 25°C and concentrated under reduced pressure to provide the compound of formula 44. The compound of formula 45 is commercially available, e.g., from Sigma-Aldrich. Compounds of formula 46 are commercially available or can be prepared by the following illustrative method shown below in scheme 3.3:
Scheme 3.3
(SCHEME REMOVED)
where R8 and R8 are as defined above.
To a stirred solution of aniline 47 (about 74mmol) and potassium thiocyanate (about 148mmol) in about lOOmL of glacial acetic acid is added dropwise a solution of bromine (about 74mmol) in about 25mL of glacial acetic acid. The flask containing the bromine in acetic acid is men rinsed with about 15mL of acetic acid which is combined with the solution of aniline 47. The reaction mixture is vigorously stirred at a temperature of about 25°C for between about 2 h and about 24 h. The reaction mixture is then poured over crushed ice (about 500mL) and the pH of the resulting mixture adjusted to a value of about 10 using ammonium hydroxide to provide a precipitate. The resulting precipitate is collected by filtration and recrystallized from toluene to provide the compound of formula 46. Compounds of formula 47 are commercially available or can be prepared by methods known in the art.
The compound of formula 50a-d can be obtained as shown below in scheme 3.4:
225 Scheme 3.4
(SCHEME REMOVED)
where R\, R2, R3, m, n, and p are as defined above and L is a halogen.
A compound of formula 49a-d (about 20mmol) is reacted with a compound of formula 48 (about 27.5mmol) in about 15mL of DMSO in the presence of triethylamine (about 30mmol), optionally with heating, for about 24 h to provide a compound of

226
formula 50a-d. The compound of formula 50a-d is isolated from the reaction mixture and further treated if desired. In one embodiment, the compound of formula 50a-d is chromatographed using column chromatography or recrystallized.
Compounds of formula 48 and 49a-d are commercially available or can be prepared by methods known in the art. The compound of formula 48 where m is 0 and the compound of formula 48 where m is 1 and R3 is (/?) -CH3 or (5) -CH3 are commercially available, e.g., from Sigma-Aldrich. In one embodiment, L is bromide, chloride, or iodide.
PiperaZ1ne Compounds where X is O, Ar2 is a benzothiazolyl group, and R20 is -(C1-C4)alkyl can be obtained by the following illustrative method shown below in scheme 3.5:
Scheme 3.5
(SCHEME REMOVED)
where Ar1, R3, R8, R9, R20, and m are as defined above and L is a halogen.
To a solution of a PiperaZ1ne Compound where X is O, Ar2 is a benzothiazolyl group, and R20 is -H (about leq.), obtained as described above in Scheme 3.1, in DMF at 0°C, is added a DMF solution of NaH (about 2 eq.). The reaction mixture is allowed to warm to a temperature of about 25°C over about 1 h. To the resulting mixture is added about 1.2eq. of an alkyl halide, R20-L, and the reaction mixture allowed to stir until the PiperaZ1ne Compounds where X is O, Ar2 is a benzothiazolyl group, and R20 is -(C1-C4)alkyl form. The progress of the reaction can be monitored using conventional analytical techniques including, but not limited to, high pressure liquid chromatography
(HPLC), column chromatography, thin-layer chromatography (TLC), column chromatography, gas chromatography, mass spectrometry, and nuclear magnetic resonance spectroscopy such as !H and 13C NMR. PiperaZ1ne Compounds can be isolated and further treated if desired. In one embodiment, the PiperaZ1ne Compound is isolated by removing the solvent under reduced pressure. In another embodiment, the PiperaZ1ne Compound is isolated by extraction. PiperaZ1ne Compounds can be further treated, for example, by column chromatography or recrystallization.
5.5.3.2 Methods for Making PiperaZ1ne Compounds where X is S and Ar2 is a Benzothiazolyl Group
PiperaZ1ne Compounds where X is S, Ar2 is a benzothiazolyl group, and R20 is -H can be obtained by the following illustrative method in scheme 3.6.
228 Scheme 3.6
(SCHEME REMOVED)
where Ai\, R3, R8, R9 and m are as defined above.
A compound of formula 46 (about 2mmol), l,l’-thiocarbonyldiimidazole (about 2mmol) (Sigma-Aldrich), and 4-dimethylaminopyridine (DMAP) (Sigma-Aldrich) are suspended in DMSO (about 3mL) at a temperature of about 25°C and the resulting mixture is heated at about 100°C for about 6 h. The reaction mixture is then cooled to a temperature of about 25°C and a compound of formula 43 (about 2mmol) is added to the
reaction mixture and the reaction mixture is heated to about 100°C for about 16 h. The reaction mixture is concentrated under reduced pressure to provide PiperaZ1ne Compounds where X is S, Ar2 is a benzothiazolyl group, and R20 is -H. PiperaZ1ne Compounds can be chromatographed on a silica column eluted with 5:95 ethyl acetate:hexane.
PiperaZ1ne Compounds where X is S, Ar2 is a benzothiazolyl group, and R20 is -(C1-C4)alkyl can be obtained by a method analogous to the method used to obtain PiperaZ1ne Compounds where X is O, Ar2 is a benzothiazolyl group, and R20 is -(Cr C4)alkyl as described above in Scheme 3.5 except that a PiperaZ1ne Compound where X is S, Ar2 is a benzothiazolyl group, and R20 is -H, obtained as described above in Scheme 3.6, is used in place of the PiperaZ1ne Compound where X is O, Ar2 is a benzothiazolyl group, and R20 is -H.
5.5.3.3 Methods for Making PiperaZ1ne Compounds Where X is O and Ar2 is a Benzooxazolvl Group
PiperaZ1ne Compounds where X is O, Ar2 is a benzooxazolyl group, and R20 is -H can be obtained by a method analogous to that used to obtain the PiperaZ1ne Compounds where X is O, Ar2 is a benzothiazolyl, and R20 is -H as described in section 5.4.3.1, scheme 3.1, except that a compound of formula 51, shown below.
(SCHEME REMOVED)
where R8 and R9 are as defined above, is used in place of the compound of formula 44.
The compound of formula 51 can be obtained by a method analogous to that used to obtain the compound of formula 44 as described above in Scheme 3.2 except that a compound of formula 52, shown below,
(SCHEME REMOVED)
where R8 and R9 are as defined above, is used in place of compound 46.
5.5.3.4 Methods for Making PiperaZ1ne Compounds Where X is S and Ar2 is a Benzooxazolvl Group
PiperaZ1ne Compounds where X is S, Ar2 is a benzooxazolvl group, and R20 is -H can be obtained by a method analogous to that used to obtain the PiperaZ1ne Compounds described above in Scheme 3.6 except that a compound of formula 53 is used in place of the compound of formula 44. The compound of Formula 53 can be obtained as described above.
(SCHEME REMOVED)
PiperaZ1ne Compounds where X is S, Ar2 is a benzooxazolyl group, and R20 is -(C1-C4)alkyl can be obtained by a method analogous to the method used to obtain the
PiperaZ1ne Compounds described above in Scheme 3.5 except that a PiperaZ1ne Compound where X is S, Ar2 is a benzooxazolyl group, and R20 is -H, obtained as described above, is used in place of the PiperaZ1ne Compound where X is O, Ar2 is a benzothiazolyl group, and R20 is -H.
5.5.3.5 Methods for Making PiperaZ1ne Compounds Where X is O and Ar1 is a Benzoimidiazolyl Group
PiperaZ1ne Compounds where X is O, Ar2 is a benzoimidiazolyl group, the amide R20 is -H, and the benzoimidiazolyl group R20 is -H can be obtained by a method analogous to that used to obtain the PiperaZ1ne Compounds described above in Scheme 3.1 except that a compound of formula 54, shown below,
(SCHEME REMOVED)
where R8 and R9 are as defined above, is used in place of the compound of formula 44.
The Compound of formula 54 can be obtained by a method analogous to that used to obtain the compound of formula 44 as described in section 5.4.3.1, Scheme 3.2, except that a compound of formula 55, shown below,
(SCHEME REMOVED)
where Rs and R9 are as defined above, is used in place of the compound of formula 46. Compounds of formula 55 are commercially available or can be prepared by procedures known in the art. An illustrative procedure for obtaining compound 55 is shown below in Scheme 3.7:
Scheme 3.7
(SCHEME REMOVED)
where Rs and R9 are as defined above.
A compound of formula 56 (about lmmol), prepared as described below in Scheme 3.11, is dissolved in excess aqueous ammonia in a sealed rube and heated at a temperature of between about 140°C and 150°C for about 72 h. The mixture is cooled to a temperature of about 25°C and concentrated under reduced pressure to provide a residue. In another embodiment, the mixture is cooled to a temperature of about 25°C, extracted with an oR8anic solvent, the oR8anic phase separated from the aqueous phase, and the oR8anic phase is concentrated under reduced pressure to provide a residue. If desired, the residue is then further treated to provide the compound of formula 55. In one embodiment, the residue is recrystallized. In another embodiment, the residue is chromatographed using flash chromatography.
Compounds of formula 56 are commercially available or can be prepared by procedures known in the art. An illustrative method for prepAr1ng the compound of formula 56 is shown below in scheme 3.8:
(SCHEME REMOVED)
where R8 and R8 are as defined above.
A compound of formula 57 (about 5 mmol to about l0mmol) and di(l#-imidazol-l-yl)methanone (CDI, about 2 eq) is dissolved in THF (about 50mL to about 70mL) and the reaction mixture is heated at reflux temperature for about 4 hours. The reaction mixture is then concentrated under reduced pressure to provide a residue. Ethyl acetate (about 50mL) is added to the residue and the resulting insoluble material is collected by filtration and washed with ethyl acetate to provide a compound of formula 58. The compound of formula 58 is then reacted with POC13 according to the procedure described in J. Med. Chem. 40:586-593 (1997) to provide the compound of formula 56.
The compounds of formula 57 are commercially available or can be prepared by procedures known in the art. An illustrative procedure for obtaining a compound of formula 57 is shown below in scheme 3.9:
Scheme 3.9
(SCHEME REMOVED)
234
where R8 and R9 are as defined above.
Aniline hydrochloride 59 (about 12mmol) is dissolved in concentrated sulfuric acid (about l0mL) at 0°C and the resulting solution cooled to a temperature of about -13°C to about -15°C. About lmL of 70% nitric acid is added to the resulting solution over a time peR10d of about 30 min. and the reaction mixture allowed to stir for about 2 h at a temperature of from about -13°C to about -15°C. The reaction mixture is then poured into ice water (about lOOmL), neutralized with 5% to 10% aqueous sodium hydroxide, and extracted with about 50mL of chloroform. The chloroform layer is separated from the aqueous layer. Concentration under reduced pressure provides a residue that is chromatographed using flash chromatography (silica column and chloroform eluent) to provide a compound of formula 60. The compound of formula 60 is dissolved in ethanol (about 50mL) and hydrogenated for about 12 h at a temperature of about 25°C using 10% palladium on carbon as a catalyst. The catalyst is removed by filtration and the ethanol is removed under reduced pressure to provide a residue that is chromatographed using flash chromatography (silica gel eluted with 20:1 dichloromethane:methanol) to provide the compound of formula 57. The compounds of formula 59 are commercially available or can be prepared by procedures known in the art.
PiperaZ1ne Compounds where X is O, Ar2 is a benzoimidiazolyl group, the amide R20 is -H, and the benzoimidiazolyl group R20 is -(C1-Chalky 1 can be obtained by a method analogous to that used to obtain the PiperaZ1ne Compounds where X is O, Ar2 is a benzoimidiazolyl group, the amide R20 is -H, and the benzoimidiazolyl group R20 is -H except that a compound of formula 61, shown below, (SCHEME REMOVED)
where R8, R8, and R20 are as defined above, is used in place of the compound of formula
54. The compound of formula 61 can be obtained by a method analogous to that used to
obtain the compound of formula 54 except that a compound of formula 62, shown
below,
(FORMULA REMOVED)
where R8, Rs>, and R20 are as defined above, is used in place of the compound of formula
55. The compound of formula 62 can be obtained as shown below in scheme 3.10.
Scheme 3.10
(SCHEME REMOVED)
where R8, R9, and R20 are as defined above and L is a halogen.
NaH (about 2 eq) is added to a solution of a compound of formula 55 in DMF at 0°C and the resulting mixture is allowed to stir and to warm to a temperature of about 25°C over a peR10d of about one hour. An alkyl halide, R20-L, (about leq.) is then added to the solution and the reaction mixture allowed to stir until a mixture of a compound of formula 62 and a compound of formula 63 is produced. In one embodiment, the alkyl halide is an alkyl iodide. The formation of the compound of formula 62 and the compound of formula 63 can be monitored by analytical methods known in the art
including, but not limited to, those described above. Water is then added to the reaction mixture to produce a precipitate of the compound of formula 62 and the compound of formula 63, which are collected by filtration. The compound of formula 62 and the compound of formula 63 are then separated to provide the compound of formula 62. The compound of formula 62 and the compound of formula 63 can be separated by methods known in the art including, but not limited to, column chromatography, preparative TLC, preparative HPLC, and preparative GC.
5.5.3.6 Methods for Making PiperaZ1ne Compounds Where X is S and Ar1 is a Benzoimidiazolyl Group
PiperaZ1ne Compounds where X is S, Ar2 is a benzoimidiazolyl group, the thioamide R20 is -H, and the benzoimidiazolyl group R20 is -H can be obtained by a method analogous to that used to obtain the PiperaZ1ne Compounds described above in scheme 3.6 except that a compound of formula 55 is used in place of the compound of formula 46. The compound of formula 55 can be obtained as described above.
PiperaZ1ne Compounds where X is S, Ar2 is a benzoimidiazolyl group, the thioamide R20 is -H, and the benzoimidiazolyl group R20 is -(C1-COalkyl can be obtained by a method analogous to that used to obtain PiperaZ1ne Compounds as described in section 5.4.3.2, scheme 3.6, except that a compound of formula 62 is used in place of the compound of formula 46. The compound of formula 62 can be obtained as described above.
PiperaZ1ne Compounds where X is S, Ar2 is a benzoimidiazolyl group, the thioamide R20 is -(C1-GOalkyl, and the benzoimidiazolyl group R20 is -H can be obtained by a method analogous to that used to obtain the PiperaZ1ne Compounds as described above in scheme 3.5 except that a PiperaZ1ne Compound where X is S and each R20 is -H, prepared as described above, is used in place of the PiperaZ1ne Compounds where X is O and the amide R20 is -H.
PiperaZ1ne Compounds where X is S, Ar2 is a benzoimidiazolyl group, the thioamide R20 is -(C1-GOalkyl, and the benzoimidiazolyl group R20 is -(C1-C4)alkyl can be obtained by a method analogous to that used to obtain the PiperaZ1ne Compounds where X is O and R20 is -(C1-C4)alkyl as described above in scheme 3.5 except that the PiperaZ1ne Compound where X is S, the thioamide R20 is -H, and the benzoimidiazolyl
group R20 is -(C1-C4)alkyl, prepared as described above, is used in place of the PiperaZ1ne Compound where X is O and R20 is -H.
Suitable aprotic oR8anic solvents for use in the illustrative methods include, but are not limited to, DCM, DMSO, chloroform, toluene, benzene, acetonitrile, carbon tetrachloride, pentane, hexane, ligroin, and diethyl ether. In one embodiment, the aprotic oR8anic solvent is DCM.
Certain PiperaZ1ne Compounds can have one or more asymmetric centers and therefore exist in different enantiomeric and diastereomeric forms. A PiperaZ1ne Compound can be in the form of an optical isomer or a diastereomer. Accordingly, the invention encompasses PiperaZ1ne Compounds and their uses as described herein in the form of their optical isomers, diastereomers, and mixtures thereof, including a racemic mixture.
In addition, one or more hydrogen, carbon or other atoms of a PiperaZ1ne Compound can be replaced by an isotope of the hydrogen, carbon or other atoms. Such compounds, which are encompassed by the invention, are useful as research and diagnostic tools in metabolism pharmacokinetic studies and in binding assays.
5.6 THERAPEUTIC USES OF COMPOUNDS OF FORMULA I
In accordance with the invention, the compounds of formula I are administered to an animal in need of treatment or prevention of a Condition.
In one embodiment, an effective amount of a compound of formula I can be used to treat or prevent any condition treatable or preventable by inhibiting TRPV1. Examples of Conditions that are treatable or preventable by inhibiting TRPV1 include, but are not limited to, pain, UI, an ulcer, IBD, and IBS.
The compounds of formula I, or a pharmaceutically acceptable derivative thereof, can be used to treat or prevent acute or chronic pain. Examples of pain treatable or preventable using the compounds of formula I include, but are not limited to, cancer pain, labor pain, myocardial infarction pain, pancreatic pain, colic pain, post-operative pain, headache pain, muscle pain, arthritic pain, and pain associated with a peR10dontal disease, including gingivitis and peR10dontitis.
The compounds of formula I, or a pharmaceutically acceptable derivative thereof, can also be used for treating or preventing pain associated with inflammation or
with an inflammatory disease in an animal. Such pain can Ar1se where there is an inflammation of the body tissue which can be a local inflammatory response and/or a systemic inflammation. For example, the compounds of formula I can be used to treat or prevent pain associated with inflammatory diseases including, but not limited to: oR8an transplant rejection; reoxygenation injury resulting from oR8an transplantation (see Grupp et al., J. Mol. Cell Cardiol. 3J.:297-303 (1999)) including, but not limited to, transplantation of the heart, lung, liver, or kidney; chronic inflammatory diseases of the joints, including arthritis, rheumatoid arthritis, osteoarthritis and bone diseases associated with increased bone resorption; inflammatory bowel diseases, such as ileitis, ulcerative colitis, Barrett’s syndrome, and Crohn’s disease; inflammatory lung diseases, such as asthma, adult respiratory distress syndrome, and chronic obstructive airway disease; inflammatory diseases of the eye, including corneal dystrophy, trachoma, onchocerciasis, uveitis, sympathetic ophthalmitis and endophthalmitis; chronic inflammatory diseases of the gum, including gingivitis and peR10dontitis; tuberculosis; leprosy; inflammatory diseases of the kidney, including uremic complications, glomerulonephritis and nephrosis; inflammatory diseases of the skin, including sclerodermatitis, psoriasis and eczema; inflammatory diseases of the central nervous system, including chronic demyelinating diseases of the nervous system, multiple sclerosis, AIDS-related neurodegeneration and Alzheimer s disease, infectious meningitis, encephalomyelitis, Parkinson’s disease, Huntington’s disease, amyotrophic lateral sclerosis and viral or autoimmune encephalitis; autoimmune diseases, including Type I and Type II diabetes mellitus; diabetic complications, including, but not limited to, diabetic cataract, glaucoma, retinopathy, nephropathy (such as microaluminuria and progressive diabetic nephropathy), polyneuropathy, mononeuropathies, autonomic neuropathy, gangrene of the feet, atherosclerotic coronary arterial disease, peripheral arterial disease, nonketotic hypeR8lycemic-hyperosmolar coma, foot ulcers, joint problems, and a skin or mucous membrane complication (such as an infection, a shin spot, a candidal infection or necrobiosis lipoidica diabeticorum); immune-complex vasculitis, and systemic lupus erythematosus (SLE); inflammatory diseases of the heart, such as cardiomyopathy, ischemic heart disease hypercholesterolemia, and atherosclerosis; as well as vaR10us other diseases that can have significant inflammatory components, including preeclampsia, chronic liver failure, brain and spinal cord trauma, and cancer. The compounds of formula I can also be used for inhibiting, treating, or preventing pain associated with inflammatory disease that can, for example, be a
systemic inflammation of the body, exemplified by gram-positive or gram negative shock, hemorrhagic or anaphylactic shock, or shock induced by cancer chemotherapy in response to pro-inflammatory cytokines, e.g., shock associated with pro-inflammatory cytokines. Such shock can be induced, e.g., by a chemotherapeutic agent that is adminstered as a treatment for cancer.
The compounds of formula I, or a pharmaceutically acceptable derivative thereof, can be used to treat or prevent UI. Examples of UI treatable or preventable using the compounds of formula I include, but are not limited to, uR8e incontinence, stress incontinence, overflow incontinence, neurogenic incontinence, and total incontinence.
The compounds of formula I, or a pharmaceutically acceptable derivative thereof, can be used to treat or prevent an ulcer. Examples of ulcers treatable or preventable using the compounds of formula I include, but are not limited to, a duodenal ulcer, a gastric ulcer, a maR8inal ulcer, an esophageal ulcer, or a stress ulcer.
The compounds of formula I, or a pharmaceutically acceptable derivative thereof, can be used to treat or prevent IBD, including Crohn’s disease and ulcerative colitis.
The compounds of formula I, or a pharmaceutically acceptable derivative thereof, can be used to treat or prevent IBS. Examples of IBS treatable or preventable using the compounds of formula I include, but are not limited to, spastic-colon-type IBS and constipation-predominant IBS.
Applicants believe that the compounds of formula I, or a pharmaceutically acceptable derivative thereof, are antagonists for TRPVl. The invention also relates to methods for inhibiting TRPVl function in a cell comprising contacting a cell capable of expressing TRPVl with an effective amount of a compound of formula I, or a pharmaceutically acceptable derivative thereof. This method can be used in vitro, for example, as an assay to select cells that express TRPVl and, accordingly, are useful as part of an assay to select compounds useful for treating or preventing pain, UI, an ulcer, IBD, or IBS. The method is also useful for inhibiting TRPVl function in a cell in vivo, in an animal, a human in one embodiment, by contacting a cell, in an animal, with an effective amount of a compound of formula I, or a pharmaceutically acceptable derivative thereof. In one embodiment, the method is useful for treating or preventing pain in an animal. In another embodiment, the method is useful for treating or preventing UI in an animal. In another embodiment, the method is useful for treating or
preventing an ulcer in an animal. In another embodiment, the method is useful for treating or preventing IBD in an animal. In another embodiment, the method is useful for treating or preventing IBS in an animal.
Examples of tissue comprising cells capable of expressing TRPV1 include, but are not limited to, neuronal, brain, kidney, urothelium, and bladder tissue. Methods for assaying cells that express TRPV1 are known in the art.
5.7 THERAPEUTIC/PROPHYLACTIC ADMINISTRATION AND COMPOSITIONS OF THE INVENTION
Due to their activity, compounds of formula I, or a pharmaceutically acceptable derivative thereof, are advantageously useful in veterinary and human medicine. As described above, compounds of formula I, or a pharmaceutically acceptable derivative thereof, are useful for treating or preventing a Condition.
When administered to an animal, compounds of formula I, or a pharmaceutically acceptable derivative thereof, are typically administered as a component of a composition that comprises a pharmaceutically acceptable carrier or excipient. The present compositions, which comprise a compound of formula I, or a pharmaceutically acceptable derivative thereof, can be administered orally. Compounds of formula I, or a pharmaceutically acceptable derivative thereof, can also be administered by any other convenient route, for example, by infusion or bolus injection, by absorption through epithelial or mucocutaneous linings {e.g., oral, rectal, and intestinal mucosa, etc.) and can be administered together with another therapeutically active agent. Administration can be systemic or local. VaR10us delivery systems are known, e.g., encapsulation in liposomes, microparticles, microcapsules, capsules, etc., and can be used to administer the compound of fonnula I, or a pharmaceutically acceptable derivative thereof.
Methods of administration include, but are not limited to, intradermal, intramuscular, intraperitoneal, intravenous, subcutaneous, intranasal, epidural, oral, sublingual, intracerebral, intravaginal, transdermal, rectal, by inhalation, or topical, particularly to the ears, nose, eyes, or skin. The mode of administration is left to the discretion of the practitioner. In most instances, administration will result in the release of compounds of formula I, or a pharmaceutically acceptable derivative thereof, into the bloodstream.
In specific embodiments, it can be desirable to administer the compounds of formula I, or a pharmaceutically acceptable derivative thereof, locally. This can be achieved, for example, and not by way of limitation, by local infusion during suR8ery, topical application, e.g., in conjunction with a wound dressing Ar2er suR8ery, by injection, by means of a catheter, by means of a suppository or enema, or by means of an implant, said implant being of a porous, non-porous, or gelatinous material, including membranes, such as sialastic membranes, or fibers.
In certain embodiments, it can be desirable to introduce the compounds of formula I, or a pharmaceutically acceptable derivative thereof, into the central nervous system or gastrointestinal tract by any suitable route, including intraventricular, intrathecal, and epidural injection, and enema. Intraventricular injection can be facilitated by an intraventricular catheter, for example, attached to a reservoir, such as an Ommaya reservoir.
Pulmonary administration can also be employed, e.g., by use of an inhaler or nebulizer, and formulation with an aerosoliZ1ng agent, or via perfusion in a fluorocarbon or synthetic pulmonary surfactant. In certain embodiments, the compounds of formula I can be formulated as a suppository, with traditional binders and excipients such as triglycerides.
In another embodiment, the compounds of formula I, or a pharmaceutically acceptable derivative thereof, can be delivered in a vesicle, in particular a liposome (see Langer, Science 249:1527-1533 (199O) and Treat et al, Liposomes in the Therapy of Infectious Disease and Cancer 317-327 and 353-365 (1989)).
In yet another embodiment, the compounds of formula I, or a pharmaceutically acceptable derivative thereof, can be delivered in a controlled-release system or sustained-release system (see, e.g., Goodson, in Medical Applications of Controlled Release, supra, vol. 2, pp. 115-138 (1984)). Other controlled- or sustained-release systems discussed in the review by Langer, Science 249:1527-1533 (199O) can be used. In one embodiment, a pump can be used (Langer, Science 249:1527-1533 (199O); Sefton, CRC Crit. Ref. Biomed. Eng. 14:201 (1987); Buchwald et al, SuR8ery 88:507 (198O); and Saudek et al, N. Engl. J. Med. 321:574 (1989)). In another embodiment, polymeric materials can be used (see Medical Applications of Controlled Release (Langer and Wise eds., 1974); Controlled Drug Bioavailability, Drug Product Design and Performance (Smolen and Ball eds., 1984); Ranger and Peppas, J. Macromol. Sci. Rev. Macromol. Chem. 23:61 (1983); Levy et al, Science 228:190 (1985); During et al,
Ann. Neurol. 25:351 (1989); and Howard et al, J. NeurosuR8. 71:105 (1989)). In yet another embodiment, a controlled- or sustained-release system can be placed in proximity of a taR8et of the compounds of formula I, e.g., the spinal column, brain, or gastrointestinal tract, thus requiring only a fraction of the systemic dose.
The present compositions can optionally comprise a suitable amount of a pharmaceutically acceptable excipient so as to provide the form for proper administration to the animal.
Such pharmaceutical excipients can be liquids, such as water and oils, including those of petroleum, animal, vegetable, or synthetic origin, such as peanut oil, soybean oil, mineral oil, sesame oil and the like. The pharmaceutical excipients can be saline, gum acacia, gelatin, starch paste, talc, keratin, colloidal silica, urea and the like. In addition, auxiliary, stabiliZ1ng, thickening, lubricating, and coloring agents can be used. In one embodiment, the pharmaceutically acceptable excipients are sterile when administered to an animal. Water is a particularly useful excipient when the compound of formula I is administered intravenously. Saline solutions and aqueous dextrose and glycerol solutions can also be employed as liquid excipients, particularly for injectable solutions. Suitable pharmaceutical excipients also include starch, glucose, lactose, sucrose, gelatin, malt, R1ce, flour, chalk, silica gel, sodium stearate, glycerol monostearate, talc, sodium chloride, dried skim milk, glycerol, propylene, glycol, water, ethanol and the like. The present compositions, if desired, can also contain minor amounts of wetting or emulsifying agents, or can contain pH buffering agents.
The present compositions can take the form of solutions, suspensions, emulsion, tablets, pills, pellets, multiparticulates, capsules, capsules containing liquids, powders, multiparticulates, sustained-release formulations, suppositories, emulsions, aerosols, sprays, suspensions, or any other form suitable for use. In one embodiment, the composition is in the form of a capsule (see e.g., U.S. Patent No. 5,698,155). Other examples of suitable pharmaceutical excipients are described in Remington’s Pharmaceutical Sciences 1447-1676 (Alfonso R. Gennaro ed., 19th ed. 1995), incorporated herein by reference.
In one embodiment, the compounds of formula I, or a pharmaceutically acceptable derivative thereof, are formulated in accordance with routine procedures as a composition adapted for oral administration to human beings. Compositions for oral delivery can be in the form of tablets, lozenges, aqueous or oily suspensions, granules, powders, emulsions, capsules, syrups, or elixirs, for example. Orally administered
compositions can contain one or more agents, for example, sweetening agents such as fructose, aspartame or sacchAr1n; flavoring agents such as peppermint, oil of winteR8reen, or cherry; coloring agents; and preserving agents, to provide a pharmaceutically palatable preparation. Moreover, where in tablet or pill form, the compositions can be coated to delay disintegration and absorption in the gastrointestinal tract thereby providing a sustained action over an extended peR10d of time. Selectively permeable membranes surrounding an osmotically active driving compound are also suitable for orally administered compositions. In these latter platforms, fluid from the environment surrounding the capsule is imbibed by the driving compound, which swells to displace the agent or agent composition through an aperture. These delivery platforms can provide an essentially zero order delivery profile as opposed to the spiked profiles of immediate release formulations. A time-delay material such as glycerol monostearate or glycerol stearate can also be used. Oral compositions can include standard excipients such as mannitol, lactose, starch, magnesium stearate, sodium sacchAr1n, cellulose, and magnesium carbonate. In one embodiment, the excipients are of pharmaceutical grade.
The compounds of formula I, or a pharmaceutically acceptable derivative thereof, can be administered by controlled-release or sustained-release means or by delivery devices that are known to those of ordinary skill in the art. Examples include, but are not limited to, those described in U.S. Patent Nos.: 3,845,770; 3,916,899; 3,536,809; 3,598,123; 4,008,719; 5,674,533; 5,059,595; 5,591,767; 5,120,548; 5,073,543; 5,639,476; 5,354,556; and 5,733,566, each of which is incorporated herein by reference. Such dosage forms can be used to provide controlled- or sustained-release of one or more active ingredients using, for example, hydropropylmethyl cellulose, ethylcellulose, other polymer matrices, gels, permeable membranes, osmotic systems, multilayer coatings, microparticles, liposomes, microspheres, or a combination thereof to provide the desired release profile in varying proportions. Suitable controlled- or sustained-release formulations known to those of ordinary skill in the art, including those described herein, can be readily selected for use with the active ingredients of the invention. The invention thus encompasses single unit dosage forms suitable for oral administration such as, but not limited to, tablets, capsules, gelcaps, and caplets that are adapted for controlled- or sustained-release.
Controlled- or sustained-release pharmaceutical compositions can have a common goal of improving drug therapy over that achieved by their non-controlled or
non-sustained release counterparts. In one embodiment, a controlled- or sustained-release composition comprises a minimal amount of a compound of formula I to cure or control the condition in a minimum amount of time. Advantages of controlled- or sustained-release compositions include extended activity of the drug, reduced dosage frequency, and increased patient compliance. In addition, controlled- or sustained-release compositions can favorably affect the time of onset of action or other characteristics, such as blood levels of the compound of formula I, and can thus reduce the occurrence of adverse side effects.
Controlled- or sustained-release compositions can be designed to immediately release an amount of a compound of formula I, or a pharmaceutically acceptable derivative thereof, that promptly produces the desired therapeutic or prophylactic effect, and gradually and continually release other amounts of the compound of formula I to maintain this level of therapeutic or prophylactic effect over an extended peR10d of time. To maintain a constant level of the compound of formula I in the body, the compound of formula I can be released from the dosage form at a rate that will replace the amount of compound of formula I being metabolized and excreted from the body. Controlled- or sustained-release of an active ingredient can be stimulated by vaR10us conditions, including but not limited to, changes in pH, changes in temperature, concentration or availability of enzymes, concentration or availability of water, or other physiological conditions or compounds.
In another embodiment, the compounds of formula I, or a pharmaceutically acceptable derivative thereof, can be formulated for intravenous administration. Typically, compositions for intravenous administration comprise sterile isotonic aqueous buffer. Where necessary, the compositions can also include a solubiliZ1ng agent. Compositions for intravenous administration can optionally include a local anaesthetic such as lignocaine to lessen pain at the site of the injection. Generally, the ingredients are supplied either separately or mixed together in unit dosage form, for example, as a dry lyophilized powder or water free concentrate in a hermetically sealed container such as an ampoule or sachette indicating the quantity of active agent. Where the compounds of formula I are to be administered by infusion, they can be dispensed, for example, with an infusion bottle containing sterile pharmaceutical grade water or saline. Where the compounds of formula I, or a pharmaceutically acceptable derivative thereof, are administered by injection, an ampoule of sterile water for injection or saline can be provided so that the ingredients can be mixed pR10r to administration.
The amount of the compound of formula I, or a pharmaceutically acceptable derivative thereof, that is effective in the treatment or prevention of a Condition can be determined by standard clinical techniques. In addition, in vitro or in vivo assays can optionally be employed to help identify optimal dosage ranges. The precise dose to be employed will also depend on the route of administration, and the seR10usness of the Condition and can be decided according to the judgment of a practitioner and/or each animal’s circumstances. Suitable effective dosage amounts, however, will typically range from about 0.01 mg/kg of body weight to about 2500 mg/kg of body weight, although they are typically about 100 mg/kg of body weight or less. In one embodiment, the effective dosage amount ranges from about 0.01 mg/kg of body weight to about 100 mg/kg of body weight of a compound of formula I; in another embodiment, about 0.02 mg/kg of body weight to about 50 mg/kg of body weight; and in another embodiment, about 0.025 mg/kg of body weight to about 20 mg/kg of body weight.
In one embodiment, an effective dosage amount is administered about every 24 h until the Condition is abated. In another embodiment, an effective dosage amount is administered about every 12 h until the Condition is abated. In another embodiment, an effective dosage amount is administered about every 8 h until the Condition is abated. In another embodiment, an effective dosage amount is administered about every 6 h until the Condition is abated. In another embodiment, an effective dosage amount is administered about every 4h until the Condition is abated.
The effective dosage amounts described herein refer to total amounts administered; that is, if more than one compound of formula I, or a pharmaceutically acceptable derivative thereof, is administered, the effective dosage amounts correspond to the total amount administered.
Where a cell capable of expressing TRPV1 is contacted with a compound of formula I in vitro, the amount effective for inhibiting the TRPV1 receptor function in a cell will typically range from about 0.01 ug/L to about 5 mg/L; in one embodiment, from about 0.01 ug/L to about 2.5 mg/L; in another embodiment, from about 0.01 ug/L to about 0.5 mg/L; and in another embodiment, from about 0.01 ug/L to about 0.25 mg/L, of a solution or suspension of a pharmaceutically acceptable carrier or excipient. In one embodiment, the volume of solution or suspension comprising the compound of formula I, or a pharmaceutically acceptable derivative thereof, is from about 0.01 uL to about lmL. In another embodiment, the volume of solution or suspension is about 200 uL.
The compounds of formula I, or a pharmaceutical^ acceptable derivative thereof, can be assayed in vitro or in vivo for the desired therapeutic or prophylactic activity pR10r to use in humans. Animal model systems can be used to demonstrate safety and efficacy.
The present methods for treating or preventing a Condition in an animal in need thereof can further comprise administering to the animal being administered a compound of formula I, or a pharmaceutically acceptable derivative thereof, another therapeutic agent. In one embodiment, the other therapeutic agent is administered in an effective amount.
The present methods for inhibiting TRPV1 function in a cell capable of expressing TRPV1 can further comprise contacting the cell with an effective amount of another therapeutic agent.
Effective amounts of the other therapeutic agents are known in the art. However, it is within the skilled artisan’s purview to determine the other therapeutic agent’s optimal effective-amount range. In one embodiment of the invention, where another therapeutic agent is administered to an animal, the effective amount of the compound of formula I is less than its effective amount would be where the other therapeutic agent is not administered. In this case, without being bound by theory, it is believed that the compounds of formula I and the other therapeutic agent act syneR8istically to treat or prevent a Condition.
The other therapeutic agent can be, but is not limited to, an opioid agonist, a non-opioid analgesic, a non-steroid anti-inflammatory agent, an antimigraine agent, a Cox-II inhibitor, an antiemetic, a P-adreneR8ic blocker, an anticonvulsant, an antidepressant, a Ca2+-channel blocker, an anticancer agent, an agent for treating or preventing UI, an agent for treating or preventing an ulcer, an agent for treating or preventing IBD, an agent for treating or preventing IBS, an agent for treating addictive disorder, an agent for treating Parkinson’s disease and parkinsonism, an agent for treating anxiety, an agent for treating epilepsy, an agent for treating a stroke, an agent for treating a seizure, an agent for treating a pruritic condition, an agent for treating psychosis, an agent for treating Huntington’s chorea, an agent for treating ALS, an agent for treating a cognitive disorder, an agent for treating a migraine, an agent for treating vomiting, an agent for treating dyskinesia, or an agent for treating depression, and mixtures thereof.
Examples of useful opioid agonists include, but are not limited to, alfentanil, allylprodine, alphaprodine, anileridine, benzylmorphine, beZ1tramide, buprenorphine,
butorphanol, clonitazene, codeine, desomorphine, dextromoramide, dezocine, diampromide, diamorphone, dihydrocodeine, dihydromorphine, dimenoxadol, dimepheptanol, dimethylthiambutene, dioxaphetyl butyrate, dipipanone, eptazocine, ethoheptaZ1ne, ethylmethylthiambutene, ethylmorphine, etonitazene fentanyl, heroin, hydrocodone, hydromorphone, hydroxypethidine, isomethadone, ketobemidone, levorphanol, levophenacylmorphan, lofentanil, meperidine, meptaZ1nol, metazocine, methadone, metopon, morphine, myrophine, nalbuphine, narceine, nicomorphine, norlevorphanol, normethadone, nalorphine, normorphine, norpipanone, opium, oxycodone, oxymorphone, papaveretum, pentazocine, phenadoxone, phenomorphan, phenazocine, phenoperidine, piminodine, piritramide, proheptaZ1ne, promedol, properidine, propiram, propoxyphene, sufentanil, tilidine, tramadol, pharmaceutically acceptable derivatives thereof, and mixtures thereof.
In certain embodiments, the opioid agonist is selected from codeine, hydromorphone, hydrocodone, oxycodone, dihydrocodeine, dihydromorphine, morphine, tramadol, oxymorphone, pharmaceutically acceptable derivatives thereof, and mixtures thereof.
Examples of useful non-opioid analgesics include non-steroidal anti-inflammatory agents, such as aspirin, ibuprofen, diclofenac, naproxen, benoxaprofen, flurbiprofen, fenoprofen, flubufen, ketoprofen, indoprofen, piroprofen, carprofen, oxaproZ1n, pramoprofen, muroprofen, tR10xaprofen, suprofen, aminoprofen, tiaprofenic acid, fluprofen, bucloxic acid, indomethacin, sulindac, tolmetin, zomepirac, tiopinac, Z1dometacin, acemetacin, fentiazac, clidanac, oxpinac, mefenamic acid, meclofenamic acid, flufenamic acid, niflumic acid, tolfenamic acid, diflurisal, flufenisal, piroxicam, sudoxicam, isoxicam, and pharmaceutically acceptable derivatives thereof, and mixtures thereof. Other suitable non-opioid analgesics include the following, non-limiting, chemical classes of analgesic, antipyretic, nonsteroidal anti-inflammatory drugs: salicylic acid derivatives, including aspirin, sodium salicylate, choline magnesium trisalicylate, salsalate, diflunisal, salicylsalicylic acid, sulfasalaZ1ne, and olsalaZ1n; para-aminophennol derivatives including acetaminophen and phenacetin; indole and indene acetic acids, including indomethacin, sulindac, and etodolac; heteroaryl acetic acids, including tolmetin, diclofenac, and ketorolac; anthranilic acids (fenamates), including mefenamic acid and meclofenamic acid; enolic acids, including oxicams (piroxicam, tenoxicam), and pyrazolidinediones (phenylbutazone, oxyphenthartazone); and alkanones, including nabumetone. For a more detailed
description of the NSAIDs, see Paul A. Insel, Analgesic-Antipyretic and Antiinflammatory Agents and Drugs Employed in the Treatment of Gout, in Goodman & Gilman’s The Pharmacological Basis of Therapeutics 617-57 (Perry B. Molinhoff and Raymond W. Ruddon eds., 9th ed. 1996) and Glen R. Hanson, Analgesic, Antipyretic and Anti-Inflammatory Drugs in Remington: The Science and Practice of Pharmacy Vol II 1196-1221 (A.R. Gennaro ed., 19th ed. 1995) which are hereby incorporated by reference in their entireties.
Examples of useful Cox-II inhibitors and 5-lipoxygenase inhibitors, as well as combinations thereof, are described in U.S. Patent No. 6,136,839, which is hereby incorporated by reference in its entirety. Examples of useful Cox-II inhibitors include, but are not limited to, rofecoxib and celecoxib.
Examples of useful antimigraine agents include, but are not limited to, alpiropride, bromocriptine, dihydroeR8otamine, dolasetron, eR8ocornine, eR8ocorninine, eR8ocryptine, eR8onovine, eR8ot, eR8otamine, flumedroxone acetate, fonaZ1ne, ketanserin, lisuride, lomeriZ1ne, methyleR8onovine, methyseR8ide, metoprolol, naratriptan, oxetorone, pizotyline, propranolol, R1speridone, R1zatriptan, sumatriptan, timolol, trazodone, zolmitriptan, and mixtures thereof.
The other therapeutic agent can also be an agent useful for reducing any potential side effects of a compound of formula I. For example, the other therapeutic agent can be an antiemetic agent. Examples of useful antiemetic agents include, but are not limited to, metoclopromide, domperidone, prochlorperaZ1ne, promethaZ1ne, chlorpromaZ1ne, trimethobenzamide, ondansetron, granisetron, hydroxyZ1ne, acetylleucine monoethanolamine, alizapride, azasetron, benzquinamide, bietanautine, bromopride, bucliZ1ne, clebopride, cycliZ1ne, dimenhydrinate, diphenidol, dolasetron, mecliZ1ne, methallatal, metopimaZ1ne, nabilone, oxyperndyl, pipamaZ1ne, scopolamine, sulpiride, tetrahydrocannabinol, thiethylperaZ1ne, thioproperaZ1ne, tropisetron, and mixtures thereof.
Examples of useful P-adreneR8ic blockers include, but are not limited to, acebutolol, alprenolol, amosulabol, arotinolol, atenolol, befunolol, betaxolol, bevantolol, bisoprolol, bopindolol, bucumolol, bufetolol, bufuralol, bunitrolol, bupranolol, butidrine hydrochloride, butofilolol, carazolol, carteolol, carvedilol, celiprolol, cetamolol, cloranolol, dilevalol, epanolol, esmolol, indenolol, labetalol, levobunolol, mepindolol, metipranolol, metoprolol, moprolol, nadolol, nadoxolol, nebivalol, nifenalol, nipradilol,
oxprenolol, penbutolol, pindolol, practolol, pronethalol, propranolol, sotalol, sulfinalol, talinolol, tertatolol, tilisolol, timolol, toliprolol, and xibenolol.
Examples of useful anticonvulsants include, but are not limited to, acetylpheneturide, albutoin, aloxidone, aminoglutethimide, 4-amino-3-hydroxybutyric acid, atrolactamide, beclamide, buramate, calcium bromide, carbamazepine, cinromide, clomethiazole, clonazepam, decimemide, diethadione, dimethadione, doxenitroin, eterobarb, ethadione, ethosuximide, ethotoin, felbamate, fluoresone, gabapentin, 5-hydroxytryptophan, lamotrigine, magnesium bromide, magnesium sulfate, mephenytoin, mephobarbital, metharbital, methetoin, methsuximide, 5-methyl-5-(3-phenanthryl)-hydantoin, 3-methyl-5-phenylhydantoin, narcobarbital, nimetazepam, nitrazepam, oxcarbazepine, paramethadione, phenacemide, phenetharbital, pheneturide, phenobarbital, phensuximide, phenylmethylbarbituric acid, phenytoin, phethenylate sodium, potassium bromide, pregabaline, primidone, progabide, sodium bromide, solanum, strontium bromide, suclofenide, sulthiame, tetrantoin, tiagabine, topiramate, trimethadione, valproic acid, valpromide, vigabatrin, and zonisamide.
Examples of useful antidepressants include, but are not limited to, binedaline, caroxazone, citalopram, (S)-citalopram, dimethazan, fencamine, indalpine, indeloxaZ1ne hydrocholoride, nefopam, nomifensine, oxitriptan, oxypertine, paroxetine, sertraline, thiazesim, trazodone, benmoxine, iprocloZ1de, iproniaZ1d, isocarboxaZ1d, nialamide, octamoxin, phenelZ1ne, cotinine, rolicyprine, rolipram, maprotiline, metralindole, mianserin, mirtazepine, adinazolam, amitriptyline, amitriptylinoxide, amoxapine, burriptyline, clomipramine, demexiptiline, desipramine, dibenzepin, dimetacrine, dothiepin, doxepin, fluaciZ1ne, imipramine, imipramine N-oxide, iprindole, lofepramine, melitracen, metapramine, nortriptyline, noxiptilin, opipramol, pizotyline, propizepine, protriptyline, quinupramine, tianeptine, trimipramine, adrafinil, benactyZ1ne, bupropion, butacetin, dioxadrol, duloxetine, etoperidone, febarbamate, femoxetine, fenpentadiol, fluoxetine, fluvoxamine, hematoporphyrin, hypericin, levophacetoperane, medifoxamine, milnacipran, minaprine, moclobemide, nefazodone, oxaflozane, piberaline, prolintane, pyrisuccideanol, R1tanserin, roxindole, rubidium chloride, sulpiride, tandospirone, thozalinone, tofenacin, toloxatone, tranylcypromine, L-tryptophan, venlafaxine, viloxaZ1ne, and Z1meldine.
Examples of useful Ca2+-channel blockers include, but are not limited to, bepridil, clentiazem, diltiazem, fendiline, gallopamil, mibefradil, prenylamine,
semotiadil, terodiline, verapamil, amlodipine, aranidipine, barnidipine, benidipine, cilnidipine, efonidipine, elgodipine, felodipine, isradipine, lacidipine, lercanidipine, manidipine, nicardipine, nifedipine, nilvadipine, nimodipine, nisoldipine, nitrendipine, cinnAr1Z1ne, flunAr1Z1ne, lidoflaZ1ne, lomeriZ1ne, bencyclane, etafenone, fantofarone, and perhexiline.
Examples of useful anticancer agents include, but are not limited to, acivicin, aclarubicin, acodazole hydrochloride, acronine, adozelesin, aldesleukin, altretamine, ambomycin, ametantrone acetate, aminoglutethimide, amsacrine, anastrozole, anthramycin, asparaginase, asperlin, azacitidine, azetepa, azotomycin, batimastat, benzodepa, bicalutamide, bisantrene hydrochloride, bisnafide dimesylate, bizelesin, bleomycin sulfate, brequinar sodium, bropirimine, busulfan, cactinomycin, calusterone, caracemide, carbetimer, carboplatin, carmustine, carubicin hydrochloride, carzelesin, cedefingol, chlorambucil, cirolemycin, cisplatin, cladribine, crisnatol mesylate, cyclophosphamide, cytarabine, dacarbaZ1ne, dactinomycin, daunorubicin hydrochloride, decitabine, dexormaplatin, dezaguanine, dezaguanine mesylate, diaZ1quone, docetaxel, doxorubicin, doxorubicin hydrochloride, droloxifene, droloxifene citrate, dromostanolone propionate, duazomycin, edatrexate, eflornithine hydrochloride, elsamitrucin, enloplatin, enpromate, epipropidine, epirubicin hydrochloride, erbulozole, esorubicin hydrochloride, estramustine, estramustine phosphate sodium, etanidazole, etoposide, etoposide phosphate, etoprine, fadrozole hydrochloride, fazarabine, fenretinide, floxuridine, fludarabine phosphate, fluorouracil, flurocitabine, fosquidone, fostriecin sodium, gemcitabine, gemcitabine hydrochloride, hydroxyurea, idarubicin hydrochloride, ifosfamide, ilmofosine, interleukin n (including recombinant interleukin II or rIL2), interferon alpha-2a, interferon alpha-2b, interferon alpha-nl, interferon alpha-n3, interferon beta-I a, interferon gamma-I b, iproplatin, irinotecan hydrochloride, lanreotide acetate, letrozole, leuprolide acetate, liarozole hydrochloride, lometrexol sodium, lomustine, losoxantrone hydrochloride, masoprocol, maytansine, mechlorethamine hydrochloride, megestrol acetate, melengestrol acetate, melphalan, menogAr1l, mercaptopurine, methotrexate, methotrexate sodium, metoprine, meturedepa, mitindomide, mitocarcin, mitocromin, mitogillin, mitomalcin, mitomycin, mitosper, mitotane, mitoxantrone hydrochloride, mycophenolic acid, nocodazole, nogalamycin, ormaplatin, oxisuran, paclitaxel, pegaspaR8ase, peliomycin, pentamustine, peplomycin sulfate, perfosfamide, pipobroman, piposulfan, piroxantrone hydrochloride, plicamycin, plomestane, porfimer sodium, porfiromycin, prednimustine, procarbaZ1ne hydrochloride,
puromycin, puromycin hydrochloride, pyrazofurin, R1boprine, rogletimide, safingol, safmgol hydrochloride, semustine, simtrazene, sparfosate sodium, sparsomycin, spirogermanium hydrochloride, spiromustine, spiroplatin, streptonigrin, streptozocin, sulofenur, talisomycin, tecogalan sodium, tegafur, teloxantrone hydrochloride, temoporfin, teniposide, teroxirone, testolactone, thiamiprine, thioguanine, thiotepa, tiazofurin, tirapazamine, toremifene citrate, trestolone acetate, triciribine phosphate, trimetrexate, trimetrexate glucuronate, triptorelin, tubulozole hydrochloride, uracil mustard, uredepa, vapreotide, verteporfin, vinblastine sulfate, vincristine sulfate, vindesine, vindesine sulfate, vinepidine sulfate, vinglycinate sulfate, vinleurosine sulfate, vinorelbine tartrate, vinrosidine sulfate, vinzolidine sulfate, vorozole, zeniplatin, Z1nostatin, zorubicin hydrochloride.
Examples of other anti-cancer drugs include, but are not limited to, 20-epi-l,25 dihydroxyvitamin D3; 5-ethynyluracil; abiraterone; aclarubicin; acylfulvene; adecypenol; adozelesin; aldesleukin; ALL-TK antagonists; altretamine; ambamustine; amidox; amifostine; aminolevulinic acid; amrubicin; amsacrine; anagrelide; anastrozole; andrographolide; angiogenesis inhibitors; antagonist D; antagonist G; antarelix; anti-dorsaliZ1ng morphogenetic protein-1; antiandrogen, prostatic carcinoma; antiestrogen; antineoplaston; antisense oligonucleotides; aphidicolin glycinate; apoptosis gene modulators; apoptosis regulators; apurinic acid; ara-CDP-DL-PTBA; aR8inine deaminase; asulacrine; atamestane; atrimustine; axinastatin 1; axinastatin 2; axinastatin 3; azasetron; azatoxin; azatyrosine; baccatin III derivatives; balanol; batimastat; BCR/ABL antagonists; benzochlorins; benzoylstaurosporine; beta lactam derivatives; beta-alethine; betaclamycin B; betulinic acid; bFGF inhibitor; bicalutamide; bisantrene; bisaZ1ridinylspermine; bisnafide; bistratene A; bizelesin; breflate; bropirimine; budotitane; buthionine sulfoximine; calcipotR10l; calphostin C; camptothecin derivatives; canarypox IL-2; capecitabine; carboxamide-amino-triazole; carboxyamidotriazole; CaRest M3; CARN 700; cartilage derived inhibitor; carzelesin; casein kinase inhibitors (ICOS); castanospermine; cecropin B; cetrorelix; chlorlns; chloroquinoxaline sulfonamide; cicaprost; cis-porphyrin; cladribine; clomifene analogues; clotrimazole; collismycin A; collismycin B; combretastatin A4; combretastatin analogue; conagenin; crambescidin 816; crisnatol; cryptophycin 8; cryptophycin A derivatives; curacin A; cyclopentanthraquinones; cycloplatam; cypemycin; cytarabine ocfosfate; cytolytic factor; cytostatin; dacliximab; decitabine; dehydrodidemnin B; deslorelin; dexamethasone; dexifosfamide; dexrazoxane; dexverapamil; diaZ1quone; didemnin B;
didox; diethylnorspermine; dihydro-5-azacytidine; 9-dihydrotaxol; dioxamycin; diphenyl spiromustine; docetaxel; docosanol; dolasetron; doxifluridine; droloxifene; dronabinol; duocarmycin SA; ebselen; ecomustine; edelfosine; edrecolomab; eflomithine; elemene; emitefur; epirubicin; epristeride; estramustine analogue; estrogen agonists; estrogen antagonists; etanidazole; etoposide phosphate; exemestane; fadrozole; fazarabine; fenretinide; filgrastim; finasteride; flavopiridol; flezelastine; fluasterone; fludarabine; fluorodaunorunicin hydrochloride; forfenimex; formestane; fostriecin; fotemustine; gadolinium texaphyrin; gallium nitrate; galocitabine; ganirelix; gelatinase inhibitors; gemcitabine; glutathione inhibitors; hepsulfam; heregulin; hexamethylene bisacetamide; hypericin; ibandronic acid; idarubicin; idoxifene; idramantone; ilmofosine; ilomastat; imidazoacridones; imiquimod; immunostimulant peptides; insulin-like growth factor-1 receptor inhibitor; interferon agonists; interferons; interleukins; iobenguane; iododoxorubicin; 4-ipomeanol; iroplact; irsogladine; isobengazole; isohomohalicondrin B; itasetron; jasplakinolide; kahalalide F; lamellAr1n-N triacetate; lanreotide; leinamycin; lenograstim; lentinan sulfate; leptolstatin; letrozole; leukemia inhibiting factor; leukocyte alpha interferon; leuprolide+estrogen+progesterone; leuprorelin; levamisole; liarozole; linear polyamine analogue; lipophilic disacchAr1de peptide; lipophilic platinum compounds; lissoclinamide 7; lobaplatin; lombricine; lometrexol; lonidamine; losoxantrone; lovastatin; loxoribine; lurtotecan; lutetium texaphyrin; lysofylline; lytic peptides; maitansine; mannostatin A; mAr1mastat; masoprocol; maspin; matrilysin inhibitors; matrix metalloproteinase inhibitors; menogAr1l; merbarone; meterelin; methioninase; metoclopramide; MIF inhibitor; mifepristone; miltefosine; mirimostim; mismatched double stranded RNA; mitoguazone; mitolactol; mitomycin analogues; mitonafide; mitotoxin fibroblast growth factor-saporin; mitoxantrone; mofarotene; molgramostim; monoclonal antibody, human choR10nic gonadotrophin; monophosphoryl lipid A+myobacterium cell wall sk; mopidamol; multiple drug resistance gene inhibitor; multiple tumor suppressor 1-based therapy; mustard anticancer agent; mycaperoxide B; mycobacterial cell wall extract; myriaporone; N-acetyldinaline; N-substituted benzamides; nafarelin; nagrestip; naloxone+pentazocine; napavin; naphterpin; nartograstim; nedaplatin; nemorubicin; neridronic acid; neutral endopeptidase; nilutamide; nisamycin; nitric oxide modulators; nitroxide antioxidant; nitrullyn; 06-benzylguanine; octreotide; okicenone; oligonucleotides; onapristone; ondansetron; ondansetron; oracin; oral cytokine inducer; ormaplatin; osaterone; oxaliplatin;
oxaunomycin; paclitaxel; paclitaxel analogues; paclitaxel derivatives; palauamine; palmitoylrhizoxin; pamidronic acid; panaxytR10l; panomifene; parabactin; pazelliptine; pegaspaR8ase; peldesine; pentosan polysulfate sodium; pentostatin; pentrozole; perflubron; perfosfamide; perillyl alcohol; phenaZ1nomycin; phenylacetate; phosphatase inhibitors; picibanil; pilocarpine hydrochloride; pirarubicin; piritrexim; placetin A; placetin B; plasminogen activator inhibitor; platinum complex; platinum compounds; platinum-triamine complex; porfimer sodium; porfiromycin; prednisone; propyl bis-acridone; prostaglandin J2; proteasome inhibitors; protein A-based immune modulator; protein kinase C inhibitor; protein kinase C inhibitors, microalgal; protein tyrosine phosphatase inhibitors; purine nucleoside phosphorylase inhibitors; purpurins; pyrazoloacridine; pyridoxylated hemoglobin polyoxyethylene conjugate; raf antagonists; raltitrexed; ramosetron; ras farnesyl protein transferase inhibitors; ras inhibitors; ras-GAP inhibitor; retelliptine demethylated; rhenium Re 186 etidronate; rhizoxin; ribozymes; RII retinamide; rogletimide; rohitukine; romurtide; roquinimex; rubiginone Bl; ruboxyl; safingol; saintopin; SarCNU; sarcophytol A; saR8ramostim; Sdi 1 mimetics; semustine; senescence derived inhibitor 1; sense oligonucleotides; signal transduction inhibitors; signal transduction modulators; single chain antigen binding protein; sizofiran; sobuzoxane; sodium borocaptate; sodium phenylacetate; solverol; somatomedin binding protein; sonermin; sparfosic acid; spicamycin D; spiromustine; splenopentin; spongistatin 1; squalamine; stem cell inhibitor; stem-C6ll division inhibitors; stipiamide; stromelysin inhibitors; sulfinosine; superactive vasoactive intestinal peptide antagonist; suradista; suramin; swainsonine; synthetic glycosaminoglycans; tallimustine; tamoxifen methiodide; tauromustine; tazarotene; tecogalan sodium; tegafur; tellurapyrylium; telomerase inhibitors; temoporfin; temozolomide; teniposide; tetrachlorodecaoxide; tetrazomine; thaliblastine; thiocoraline; thrombopoietin; thrombopoietin mimetic; thymalfasin; thymopoietin receptor agonist; thymotrinan; thyroid stimulating hormone; tin ethyl etiopurpurin; tirapazamine; titanocene bichloride; topsentin; toremifene; totipotent stem cell factor; translation inhibitors; tretinoin; triacetyluridine; triciribine; trimetrexate; triptorelin; tropisetron; turosteride; tyrosine kinase inhibitors; tyrphostins; UBC inhibitors; ubenimex; urogenital sinus-derived growth inhibitory factor; urokinase receptor antagonists; vapreotide; vaR10lin B; vector system, erythrocyte gene therapy; velaresol; veramine; verdins; verteporfin; vinorelbine; vinxaltine; vitaxin; vorozole; zanoterone; zeniplatin; Z1lascorb; and Z1nostatin stimalamer.
Examples of useful therapeutic agents for treating or preventing UI include, but are not limited to, propantheline, imipramine, hyoscyamine, oxybutynin, and dicyclomine.
Examples of useful therapeutic agents for treating or preventing an ulcer include, antacids such as aluminum hydroxide, magnesium hydroxide, sodium bicarbonate, and calcium bicarbonate; sucraflate; bismuth compounds such as bismuth subsalicylate and bismuth subcitrate; H2 antagonists such as cimetidine, ranitidine, famotidine, and nizatidine; IT1”, K+ - ATPase inhibitors such as omeprazole, lansoprazole, and lansoprazole; carbenoxolone; misprostol; and antibiotics such as tetracycline, metronidazole, timidazole, clAr1thromycin, and amoxicillin.
Examples of useful therapeutic agents for treating or preventing IBD include, but are not limited to, anticholineR8ic drugs; diphenoxylate; loperamide; deodorized opium tincture; codeine; broad-spectrum antibiotics such as metronidazole; sulfasalaZ1ne; olsalaZ1e; mesalamine; prednisone; azathioprine; mercaptopurine; and methotrexate.
Examples of useful therapeutic agents for treating or preventing IBS include, but are not limited to, propantheline; muscAr1ne receptor antagonists such as pirenzapine, methoctramine, ipratropium, tiotropium, scopolamine, methscopolamine, homatropine, homatropine methylbromide, and methantheline; and antidiarrheal drugs such as diphenoxylate and loperamide.
Examples of useful therapeutic agents for treating or preventing an addictive disorder include, but are not limited to, methadone, desipramine, amantadine, fluoxetine, buprenorphine, an opiate agonist, 3-phenoxypyridine, levomethadyl acetate hydrochloride, and serotonin antagonists.
Examples of useful therapeutic agents for treating or preventing Parkinson’s disease and parkinsonism include, but are not limited to, carbidopa/levodopa, peR8olide, bromocriptine, ropinirole, pramipexole, entacapone, tolcapone, selegiline, amantadine, and trihexyphenidyl hydrochloride.
Examples of useful therapeutic agents for treating or preventing anxiety include, but are not limited to, benzodiazepines, such as alprazolam, brotizolam, chlordiazepoxide, clobazam, clonazepam, clorazepate, demoxepam, diazepam, estazolam, flumazenil, flurazepam, halazepam, lorazepam, midazolam, nitrazepam, nordazepam, oxazepam, prazepam, quazepam, temazepam, and triazolam; non-benzodiazepine agents, such as buspirone, gepirone, ipsapR10ne, tiospirone, zolpicone, Zolpidem, and zaleplon; tranquilizers, such as barbituates, e.g., amobarbital,
aprobarbital, butabarbital, butalbital, mephobarbital, methohexital, pentobarbital, phenobarbital, secobarbital, and thiopental; and propanediol carbamates, such as meprobamate and tybamate.
Examples of useful therapeutic agents for treating or preventing epilepsy include, but are not limited to, carbamazepine, ethosuximide, gabapentin, lamotrignine, phenobarbital, phenytoin, primidone, valproic acid, trimethadione, bemzodiaepines, gabapentin, lamotrigine, y-vinyl GABA, acetazolamide, and felbamate.
Examples of useful therapeutic agents for treating or preventing stroke include, but are not limited to, anticoagulants such as hepAr1n, agents that break up clots such as streptokinase or tissue plasminogen activator, agents that reduce swelling such as mannitol or corticosteroids, and acetylsalicylic acid.
Examples of useful therapeutic agents for treating or preventing a seizure include, but are not limited to, carbamazepine, ethosuximide, gabapentin, lamotrignine, phenobarbital, phenytoin, primidone, valproic acid, trimethadione, bemzodiaepines, gabapentin, lamotrigine, y-vinyl GABA, acetazolamide, and felbamate.
Examples of useful therapeutic agents for treating or preventing a pruritic condition include, but are not limited to, naltrexone; nalmefene; danazol; tricyclics such as amitriptyline, imipramine, and doxepin; antidepressants such as those given below, menthol; camphor; phenol; pramoxine; capsaicin; tar; steroids; and antihistamines.
Examples of useful therapeutic agents for treating or preventing psychosis include, but are not limited to, phenothiaZ1nes such as chlorpromaZ1ne hydrochloride, mesoridaZ1ne besylate, and thoridaZ1ne hydrochloride; thioxanthenes such as chloroprothixene and thiothixene hydrochloride; clozapine; risperidone; olanzapine; quetiapine; quetiapine fumarate; haloperidol; haloperidol decanoate; loxapine succinate; molindone hydrochloride; pimoZ1de; and Z1prasidone.
Examples of useful therapeutic agents for treating or preventing Huntington’s chorea include, but are not limited to, haloperidol and pimoZ1de.
Examples of useful therapeutic agents for treating or preventing ALS include, but are not limited to, baclofen, neurotrophic factors, R1luzole, tizanidine, benzodiazepines such as clonazepan and dantrolene.
Examples of useful therapeutic agents for treating or preventing cognitive disorders include, but are not limited to, agents for treating or preventing dementia such as tacrine; donepeZ1l; ibuprofen; antipsychotic drugs such as thioridaZ1ne and haloperidol; and antidepressant drugs such as those given below.
Examples of useful therapeutic agents for treating or preventing a migraine include, but are not limited to, sumatriptan; methyseR8ide; eR8otamine; caffeine; and beta-blockers such as propranolol, verapamil, and divalproex.
Examples of useful therapeutic agents for treating or preventing vomiting include, but are not limited to, 5-HT3 receptor antagonists such as ondansetron, dolasetron, granisetron, and tropisetron; dopamine receptor antagonists such as prochlorperaZ1ne, thiethylperaZ1ne, chlorpromaZ1n, metoclopramide, and domperidone; glucocorticoids such as dexamethasone; and benzodiazepines such as lorazepam and alprazolam.
Examples of useful therapeutic agents for treating or preventing dyskinesia include, but are not limited to, reserpine and tetrabenaZ1ne.
Examples of useful therapeutic agents for treating or preventing depression include, but are not limited to, tricyclic antidepressants such as amitryptyline, amoxapine, bupropion, clomipramine, desipramine, doxepin, imipramine, maprotilinr, nefazadone, nortriptyline, protriptyline, trazodone, trimipramine, and venlaflaxine; selective serotonin reuptake inhibitors such as citalopram, (S)-citalopram, fluoxetine, fluvoxamine, paroxetine, and setraline; monoamine oxidase inhibitors such as isocarboxaZ1d, paR8yline, phenelZ1ne, and tranylcypromine; and psychostimulants such as dextroamphetamine and methylphenidate.
A compound of formula I, or a pharmaceutically acceptable derivative thereof, and the other therapeutic agent can act additively or, in one embodiment, syneR8istically. In one embodiment, a compound of formula I is administered concurrently with another therapeutic agent; for example, a composition comprising an effective amount of a compound of formula I and an effective amount of another therapeutic agent can be administered. Alternatively, a composition comprising an effective amount of a compound of formula I and a different composition comprising an effective amount of another therapeutic agent can be concurrently administered. In another embodiment, an effective amount of a compound of formula I is administered pR10r or subsequent to administration of an effective amount of another therapeutic agent. In this embodiment, the compound of formula I is administered while the other therapeutic agent exerts its therapeutic effect, or the other therapeutic agent is administered while the compound of formula I exerts its therapeutic effect for treating or preventing a Condition.
A composition of the invention is prepared by a method comprising admixing a compound of formula I or a pharmaceutically acceptable derivative and a
pharmaceutically acceptable carrier or excipient. Admixing can be accomplished using methods known for admixing a compound (or salt) and a pharmaceutically acceptable carrier or excipient. In one embodiment, the compound of formula I is present in the composition in an effective amount.
5.8 KITS
The invention further encompasses kits that can simplify the administration of a compound of formula I, or a pharmaceutically acceptable derivative thereof, to an animal.
A typical kit of the invention comprises a unit dosage form of a compound of formula I. In one embodiment, die unit dosage form is a container, which can be sterile, containing an effective amount of a compound of formula I and a pharmaceutically acceptable carrier or excipient. The kit can further comprise a label or printed instructions instructing the use of the compound of formula I to treat a Condition. The kit can also further comprise a unit dosage form of another therapeutic agent, for example, a second container containing an effective amount of the other therapeutic agent and a pharmaceutically acceptable carrier or excipient. In another embodiment, the kit comprises a container containing an effective amount of a compound of formula I, an effective amount of another therapeutic agent and a pharmaceutically acceptable carrier or excipient. Examples of other therapeutic agents include, but are not limited to, those listed above.
Kits of the invention can further comprise a device that is useful for administering the unit dosage forms. Examples of such a device include, but are not limited to, a syringe, a drip bag, a patch, an inhaler, and an enema bag.
The following examples are set forth to assist in understanding the invention and should not be construed as specifically limiting the invention described and claimed herein. Such vAr1ations of the invention, including the substitution of all equivalents now known or later developed, which would be within the purview of those skilled in the art, and changes in formulation or minor changes in experimental design, are to be considered to fall within the scope of the invention incorporated herein.
EXAMPLES
6.1 EXAMPLES 1-9.10A AND 10B: SYNTHESES OF COMPOUNDS OF FORMULA I
Example 1; The Syntheses of Compounds Zl. II. D2. SI. 16. Yl. .16
2,3-Dichloro-5-formvlpvridine
(FORMULA REMOVED)
To a 500 mL round-bottom flask, manganese oxide (43.5 g, 0.50 mol) was added to a solution of 2,3-dichloro-5-hydroxylmethylpyridine (64,8.10 g, 50.0 mmol) in anhydrous CH2CI2 (150 mL). The reaction mixture was stirred at a temperature of about 25°C for 48 h, filtered through CELITE, and concentrated under reduced pressure. The mixture was chromatographed by a silica gel chromatography column eluting with a gradient of ethyl acetate (0%-40%)/hexanes to provide 7.2 g of 65 (90% yield). *H NMR (400 MHz, CDC13) 8 10.08 (1H, s), 8.77 (1H, d, J=1.97 Hz), 8.25 (1H, d, J=1.97 Hz). LC/MS(M+1): 176.
2,3-Dichloro-5-vinvlpyridine
(FORMULA REMOVED)
To a stirred slurry of methyltriphenylphosphonium bromide (10.0 g) in toluene (200 mL) at 0°C was added potassium f-butoxide (3.07 g) portionwise to produce a
yellow slurry. Ar2er 1 hr, the reaction mixture was cooled to -20°C and 65 (4.0 grams, 22.72 mmol) dissolved in tetrahydrofuran (6 mL) was added dropwise to produce a purple colored slurry. The reaction mixture was heated to 0°C and stirred for additional 1 hr. Then the reaction mixture was treated with saturated aqueous brine (150 mL) and diluted with ethyl acetate (200 mL). The resulting oR8anic layer was washed with brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The resulting product was chromatographed by silica gel chromatography column eluting with a gradient of ethyl acetate (0%-10%)/hexanes to provide 2.77 g of 66 (70% yield). ‘H NMR (400 MHz, CDC13) 8 8.30 (1H, d, J=2.19Hz), 7.80 (1H, d, J=2.19Hz), 6.63 (1H, dd, J=10.96,17.80Hz), 5.86 (1H, d, J=17.80Hz), 5.45 (1H, d, J=10.96Hz). LC/MS (M+l): 174.
(S)-1 -(5,6-dichloropyridin-3-yl)ethane- 1.2-diol and ®-1 -(5.6-dichloropyridin-3-vl)ethane-l,2-diol
(FORMULA REMOVED)
To a stirred slurry of AD-mix a (8.95 g) or AD-mix p (8.95 g) in water (32 mL) and f-butanol (27 mL) at 0°C was added a solution of 66 (0.909 g, 5.25mmol) in t-butanol (5 mL). Ar2er 24 hrs, solid sodium sulfite (9.57 g) was added and the resulting slurry was allowed to stir at a temperature of about 25°C for 30 min. The mixture was extracted three times with ethyl acetate (50 mL for each extraction). The oR8anic portions were combined, washed with brine, dried (Na2SO4), and concentrated under reduced pressure. The mixture was chromatographed by a silica gel chromatography
column eluting with ethyl acetate(50%-100%)/hexanes to provide 0.75 g of product (67a for AD-mix a or 67b for AD-mix O) as a white solid (70% yield). *H NMR (400 MHz, CDC13) 8 8.29 (1H, dd, J=O.44, 1.97Hz), 7.87 (1H, dd, J=O.66, 2.19Hz), 4.87 (1H, m), 3.84 (1H, m), 3.66 (1H, m), 2.83 (1H, d, J=5.92Hz), 2.11 (1H, t, J=5.92Hz). LC/MS (M+l): 208.
(5)-3-Chloro-5-(1.2-dihvdroxv-ethvl)-3’.6,-dihvdro-2’H-r2,4,lbipvridinvl-l’-carboxvlic acid fert-butvl ester
(FORMULA REMOVED)
A 150 mL vessel was chaR8ed with 67a (0.70 g, 3.37 mmol), (N-tert-butoxycarbonyl)-l,2,3,6-tetrahrdropyridine-4-boronic acid pinacol ester (68,1.25 g, 4.04 mmol), Pd(PPh3)2Cl2 (0.189 g, 0.27 mmol), potassium carbonate (0.883 g, 6.40 mmol), and a mixture of DME/EtOH/HaO (8 mL/4 mL/8 mL). The reaction mixture was puR8ed with nitrogen, the vessel sealed, and the reaction mixture heated at 90°C with vigorous stirring. Ar2er 2 hrs, the reaction mixture was cooled to a temperature of about 25°C and diluted with EtOAc (50 mL). The oR8anic layer was washed with brine, dried (Na2SO4), and concentrated under reduced pressure. The residue was chromatographed by silica gel column chromatography with a gradient of ethyl acetate (50%-100%)/hexanes to provide 0.96 g of 69 (80% yield). ‘H NMR (400 MHz, CD3OD) 8 8.47 (1H, s), 7.93 (1H, s), 6.06 (1H, m), 4.74 (1H, t, J=5.92Hz), 4.12 (2H, m), 3.67 (4H, m), 2.54 (2H, m), 1.52 (9H,s). LC/MS (M+l): 355.

261 (S)-1 -(3-Chloro-1 ‘,2’.3’.6’-tetrahvdro-r2.4’1biDvridinvl-5-vn-ethane-1,2-diol
(FORMULA REMOVED)
A vessel (50 niL) was chaR8ed with 69 (0.90 g, mmol) and 2M HC1 in Et20 (10 mL) and sealed. The reaction mixture was stirred at 40°C for 20 hrs. The reaction mixture was cooled to a temperature of about 25°C and the solid precipitated was filtered, washed with Et20 (20 mL), and dried under reduced pressure to provide 0.65 g of 70 (>99% yield). *H NMR (400 MHz, CD3OD) 8 8.74 (1H, s), 8.52 (1H, s), 6.38 (1H, m), 4.91 (1H, m), 4.00 (2H, m), 3.75 (4H, m), 3.54 (2H, t, J=5.92Hz), 2.89 (2H, m). LC/MS(M+1): 255.
(5)-3-Chloro-5-(1.2-dihvdroxv-ethvn-3’.6’-dihvdro-2’H-r2.4’lbiDvridinvl-l’-carboxylic acid (4-trifluoroiiKthvl-phenvl)amidg
(FORMULA REMOVED)
To a suspension of 70 (800 mg, 2.45 mmol) in anhydrous dichloromethane (20 mL), diisopropylethylamine (DIEA, 2 mL) was added dropwise and the reaction mixture was stirred at a temperature of about 25°C for 10 min. The mixture was cooled to -10°C and l-isocyanato-4-(trifluoromethyl)benzene (462 mg, 2.45 mmol) which was diluted with anhydrous dichloromethane (5 mL) was slowly added over 5 min. Ar2er stirring at -10°C for 10 additional minutes, the mixture was chromatographed by a silica gel chromatography column with a gradient of methanol (0%-5%)/ethyl acetate to provide 0.60 g of Zl (56% yield). :H NMR (400 MHz, CD3OD) 5 8.49 (1H, dd, J=O.44, 1.75Hz), 7.94 (1H, dd, J=O.44, 1.75Hz), 7.72 (4H, m), 6.14 (1H, m), 4.78 (1H, t, J=5.70Hz), 4.27 (2H, m), 3.82 (2H, t, J=5.70Hz), 3.70 (2H, m), 2.66 (2H, m). MS: m/z = 441.
(5)-3-Chloro-5-(1.2-dihvdroxv-ethvD-3’.6’-dihvdro-2’H-r2.4’1biDvridinvI-l’-carboxylic acid (4-tert-butvl-phenvl)amide
(FORMULA REMOVED)
The title compound II was obtained using a procedure similar to that described for obtaining Zl except that l-rerr-butyl-4-isocyanatobenzene was used in place of 1-isocyanato-4-(trifluoromethyl)benzene (59% yield). *H NMR (400 MHz, CD3OD) 8 8.48 (1H, dd, J=O.66, 1.97Hz), 7.94 (1H, dd, J=O.66, 1.75Hz), 7.36 (3H, m), 6.14 (1H, m), 4.79 (1H, t, J=5.26Hz), 4.27 (2H, m), 3.78 (2H, t, J=5.48Hz), 3.71 (2H, m), 2.64 (2H, m). LC/MS (M+l): 430.
(5)-3-Chloro-5-a.2-dihvdroxv-ethvl)-3’.6’-dihvdro-2’H-r2.4’1bipvridinvl-l’-carboxylic acid (3-chloro-4-trifluoromethvl-phenyl)amide(FORMULA REMOVED)
To a suspension of 70 (95 mg, 0.29 mmol) in anhydrous dichloromethane (4 mL), DIEA (0.5 mL) was added dropwise, and the reaction mixture was stirred at a temperature of about 25°C for 10 min. Then the mixture was cooled to -10°C and 3-chloro-4-trifluoromethylphenyl)carbamic acid 4-nitrophenyl ester (104 mg, 0.29 mmol, prepared in situ from 2-chloro-4-nitrobenzotrifluoride (Sigma-Aldrich)) in anhydrous dichloromethane (5 mL) was slowly added over 5 min. Ar2er stirring at -10°C for 10 additional minutes, the mixture was chromatographed by a silica gel chromatography column with a gradient of methanol (0%-5%)/ethyl acetate to provide 30 mg of D2 (23% yield). ‘H NMR (400 MHz, CD3OD) 5 8.50 (1H, m), 7.95 (1H, dd, J=O.44, 1.75Hz), 7.82 (1H, d, J=1.97Hz), 7.66 (1H, d, J=8.77Hz), 7.53 (1H, m), 6.15 (1H, m), 4.78 (1H, t, J=5.48Hz), 4.27 (2H, m), 3.81 (2H, t, J=5.70Hz), 3.69 (2H, m), 2.65 (2H, m). MS: m/z = 475.
(5)-3-Chloro-5-a,2-dihvdroxv-ethvn-3’.6’-dihvdro-2’H-r2.4’lbiDvridinvl-l’-carboxylic acid (3-fluoro-4-trifluoromethvl-phenyl)amide
(FORMULA REMOVED)
The title compound SI was obtained using a procedure similar to that described for obtaining D2 except that 4-nitrophenyl 3-fluoro-4-(trifluoromethyl)phenylcarbamate was used in place of 3-chloro-4-trifluoromethylphenyl)carbamic acid 4-nitrophenyl ester (38% yield). ‘H NMR (400 MHz, CD3OD) 5 8.48 (1H, dd, J=O.44,1.75Hz), 7.95 (1H, dd, J=O.66, 1.97Hz), 7.57 (2H, m), 7.36 (1H, m), 6.14 (1H, m), 4.77 (1H, t, J=5.48Hz), 4.23 (2H, m), 3.81 (2H, t, J=5.48Hz), 3.69 (2H, m), 2.65 (2H, m). MS: m/z = 459.
(5)-3-Chloro-5-(L2-dihvdroxv-ethvn-3’,6’-dihvdfo-2’H-r2.4’lbipvridinvl-l’-carboxylic acid (3-ethvl-4-trifluoromethvl-phenyl)amide
(FORMULA REMOVED)
The title compound 16 was obtained using a procedure similar to that described for obtaining D2 except that 4-nitrophenyl 3-ethoxy-4-(trifluoromethyl)phenylcarbamate was used in place of 3-chloro-4-trifluoromethylphenyl)carbamic acid 4-nitrophenyl ester (25% yield). ‘H NMR (400 MHz, CD3OD) 5 8.27 (1H, dd, J=O.66, 1.97Hz), 7.72 (1H, dd, J=O.66,1.97Hz), 7.25 (2H, m), 6.88 (1H, d, J=8.55Hz), 5.94 (1H, m), 4.57 (1H, t, J=5.48Hz), 4.08 (2H, m), 3.96 (2H, q, J=7.02Hz), 3.64 (2H, m), 3.52 (2H, m), 2.44 (2H, m), 1.23(3H,t,J=7.02Hz). LC/MS (M+l): 486.
(5)-3-Chloro-5-(1.2-dihvdroxv-ethvl)-3’,6l-dihvdro-2’H-f2,4’lbiDvridinvl-l’-carboxylic acid (3-chloro-4-trifluoromethoxv-phenyl)amide
(FORMULA REMOVED)
The title compound Yl was obtained using a procedure similar to that described for obtaining D2 except that 4-nitrophenyl 3-chloro-4-(trifluoromethoxy)phenylcarbamate was used in place of 3-chloro-4-trifluoromethylphenyl)carbamic acid 4-nitrophenyl ester (20% yield). 2H NMR (400 MHz, CD3OD) 5 8.30 (1H, dd, J=O.44, 1.75Hz), 7.74 (1H, dd, 3=O.66, 1.75Hz), 7.57 (1H, d, J=2.41Hz), 7.25 (1H, dd, J=2.63, 8.99Hz), 7.14 (1H, m), 5.94 (1H, m), 4.57 (1H, t, J=5.70Hz), 4.06 (2H, m), 3.59 (2H, t, J=5.70Hz), 3.50 (2H, m), 2.46 (2H, m). LC/MS (M+l): 492.
(5)-3-Chloro-5-(1.2-dihvdroxv-ethvl)-3’.6’-dihvdro-2’H-r2,4’1bipyridinvl-l’-carboxvlic acid (3-ethvl-4-trifluoromethoxv-phenyl)amide
(FORMULA REMOVED)
The title compound J6 was obtained using a procedure similar to that described for obtaining D2 except that 4-nitrophenyl 3-ethyl-4-(trifluoromethoxy)phenylcarbamate was used in place of 3-chloro-4-trifluoromethylphenyl)carbamic acid 4-nitrophenyl ester (30% yield). ‘H NMR (400 MHz, CD3OD) 5 8.49 (1H, d, J=1.97Hz), 7.94 (1H, d, J=1.75Hz), 7.42 (1H, d, J=2.63Hz), 7.33 (1H, dd, J=2.85, 8.99Hz), 7.17 (1 H. m), 6.16 (1H, m), 4.77 (1H, t, J=5.48Hz), 4.25 (2H, m), 3.80 (2H, t, J=5.48Hz), 3.70 (2H, m), 2.68 (2H, m), 1.25 (3H, t, J=7.67Hz). LC/MS (M+l): 486.
69 Example 2; The Synthesis of Compound Nl
2-bromo-3,5-dichloropyridine
(FORMULA REMOVED)
A 100 mL round-bottom flask equipped with a condenser was chaR8ed with 1.82 g of compound 71 (10.0 mmol) and propiononitrile (20 mL), 3.06 g TMSBr (20.0 mmol) was slowly added to the above solution. The reaction mixture was stirred at 100°C under nitrogen for 14 hrs, then cooled to a temperature of about 25°C and diluted with EtOAc (100 mL). The EtOAc layer was isolated, dried, and concentrated under reduced pressure to provide 72 as a yellowish solid (99% yield).
ferf-butvl4-(3,5-dichloropvridin-2-vl)-4-hvdroxvpiperidine-l-carboxvlate
(FORMULA REMOVED)
Under nitrogen atmosphere, to a 200 mL diethyl ether solution of 72 (2.27 g, 10 mmol) at -78°C was dropwise added an ice-cold 1.7M f-BuLi in pentane solution (6 mL, 10.5 mmol) via a syringe while maintaining the mixture below -75°C. Ar2er completion of the addition, the reaction mixture was stirred at -78°C for 2 hrs. Then 20 mL of an anhydrous diethyl ether solution of 4-BOC-piperridone (1.99 g, 10 mmol) was slowly added via a syringe. The reaction mixture was stirred at -78°C for 2 hrs and slowly
heated to a temperature of about 25°C. Saturated aqueous NH4CI was added to the mixture and the diethyl ether layer was isolated, dried, and concentrated under reduced pressure with a rotary evaporator. Silica gel column chromatography of the residue with ethyl acetate/hexanes as eluent provided 2.1 g of 74 as a yellowish oil (61% yield over 2 steps).
terf-butvl 4-(3,5-dichloropvridin-2-vlV4-fluoropiperidine-1 -carboxylate
(FORMULA REMOVED)
To a 100 mL DCM solution of 74 (6.0 g, 17.3 mmol) at -78°C was slowly added DAST (2.5 mL, 18.8 mmol) and the resulting mixture was allowed to warm to a temperature of about 25°C for 16 h, then washed with saturated NaHCC3, dried (MgSCU), and concentrated under reduced pressure. Silica gel column chromatography of the residue with EtOAc/hexanes provided 2.5 g of 75 as yellowish solid (42% yield).
ferr-butvl 4-(3-chloro-5-vinvlpvridin-2-vl)-4-fluoropiperidine-1 -carboxylate
(FORMULA REMOVED)
To a degassed DMF solution of 75 (0.558g, 1.6 mmol) in a 100 mL round bottom flask, was added CsF (0.486 g, 3.2 mmol), di-n-butyl vinyl boronic ester (0.388
mL, 1.76 mmol) and Pd(DPPF)2Cl2 (0.105 g, 0.128 mmol). The reaction mixture was stirred at 100°C for 14 hr, then cooled to a temperature of about 25°C, diluted with 100 mL ethyl acetate, and washed three times with brine (50 mL for each wash). The oR8anic layer was isolated, dried, and concentrated under reduced pressure. Silica gel column chromatography of the residue provided 0.33 g of 76 as a yellowish oil (60% yield).
(S)-fert-butvl 4-(3-chloro-5-( 1.2-dihvdroxvethvl)pvridin-2-yl)-4-fluoropiperidine-1 -carboxylate
(FORMULA REMOVED)
In a 100 mL round bottom flask, AD-mix-a (0.5 g) was added to a mixture of t-butanol and water (2mL/2mL) and the mixture was stirred at a temperature of about 25°C for 0.5 hr, then cooled to 0°C. This solution was quickly poured into another ice chilled flask which contained 76 (140 mg, 0.41 mmol). The mixture was stirred vigorously in an ice bath for 96 h and then diluted with ethyl acetate (50 mL) and 2 mL saturated Na2S2O5. The ethyl acetate layer was isolated, dried, and concentrated under reduced pressure with a rotary evaporator to provide 77.
72 (S)-1 -(5-chloro-6-(4-fluoropiperidin-4-vl)pyridin-3-vl)ethane-1,2-diol
(FORMULA REMOVED)
A 200 mL round bottom flask was chaR8ed with 0.15 g 77 (0.36 mmol) dissolved in about 1 mL dichloromethane. Then 10 mL of 4M HC1 in dioxane was slowly added with vigorous stirring. The flask was sealed with a rubber septum and stirred at a temperature of about 25°C for 16 h. The reaction mixture was filtered and the solid was washed twice with diethyl ether (20 mL for each wash) and dried under reduced pressure to provide 112 mg of 78 as a white solid (99% yield). MS (M+H): m/z = 312.
(5)-4-(3-chloro-5-f 1.2-dihvdroxvethvl)pvridin-2-vl)-4-fluoro-N-(4-(trifluoromethvl)phenvl)piperidine-1 -carboxamide
(FORMULA REMOVED)
A 100 mL round bottom flask was chaR8ed with 90 mg 78 (0.26 mmol) suspended in dichloromethane. DIEA (0.1 mL, 0.72 mmol) and 4-trifluoromethyl phenylisocyanate (48 mg, 0.26 mmol) were added, and the reaction mixture was stirred for 10 minutes. The mixture was chromatographed using a silica flash column with a gradient of 0% to 5% methanol in dichloromethane to provide 50 mg of Nl as a white solid (60% yield). *H NMR (CD3OD) 8 8.49 (d, J=2 Hz, 1H), 7.90 (m, 1H), 7.60 (m, 4H), 4.76 (t, J=6 Hz, 1H), 4.17 (m, 2H), 3.68 (m, 2H), 3.45 (m, 2H), 2.50-2.34 (m, 4H). MS(M+1): m/z-462.1.
Example 3: Syntheses of PiperaZ1ne Compounds K6. L6. M6. V6 and W6
2,3-dichloro-5-vinvlpyridine
(FORMULA REMOVED)
To a suspension of methyltriphenylphosphonium bromide (PPhsCHsBr, 7.08 g, 19.8 mmol, Sigma-Aldrich) in THF (40 mL) at 0°C was added dropwise a 0.5N solution of potassium bis(trimethylsilyl)amide [K(N(TMS)2)]in toluene (39.6 mL, 19.8 mmol, Sigma-Aldrich). Then the resultant mixture was stirred at 0°C for lhour. To the mixture was added a solution of 65 (3.17g, 18.0 mmol) in THF (20 mL) at 0°C. The reaction mixture was stirred for 2 h at 0°C. The reaction was quenched with water, and the mixture was extracted three times with EtOAc (150 mL for each extraction). The oR8anic portions were combined, washed with brine, and concentrated to dryness. Compound 66 was obtained as a slight yellowish oil via flash chromatography using ethyl acetate/hexane gradient as an eluent (64% yield). !H NMR: (CDC13) 8 8.28 (d, J=2.1 Hz, 1H), 7.82 (d, J=2.2 Hz, 1H), 6.65 (dd, J=l 1.0, 17.5 Hz, 1H), 5.85 (d, J=17.5 Hz, 1H), 5.48 (d, J=11.0 Hz, 1H) ppm.

274 fe?t-butvl4-(3-chloro-5-vinvlpvridin-2-vl)piperaZ1ne-l-carboxvlate
(FORMULA REMOVED)
To a solution of 66 (1.74 g, 10.0 mmol) in toluene (15 mL) was added tert-buty\-1-piperiaZ1ne-carboxylate (1.86 g, 10.0 mmol, Sigma-Aldrich), palladium acetate (0.113 g, 0.5 mmol, Sigma-Aldrich), l,3-bis(diphenylphosphino)propane (DPPP, 0.220 g, 0.5 mmol, Sigma-Aldrich), and sodium tert-butoxide (1.05 g, 11.0 mmol, Sigma-Aldrich) at a temperature of about 25°C. The reaction mixture was stirred at 75°C for 16 h. Ar2er cooling to a temperature of about 25°C, water was added to quench the reaction. Then the mixture was extracted three times with diethyl ether (150 rnL for each extraction). The oR8anic portions were combined, washed with brine, and concentrated to dryness. Compound 81 was obtained as a white solid via silica gel column chromatography using an ethyl acetate/hexane gradient as an eluent (88% yield). !H NMR: (CDC13) 8 8.14 (m, 1H), 7.69 (d, J=1.5 Hz, 1H), 6.60 (dd, J=11.0, 17.5 Hz, 1H), 5.68 (d, J=17.5 Hz, 1H), 5.28 (d, J=11.0 Hz, 1H), 3.58 (m, 4H), 3.32 (m, 4H), 1.49 (s, 9H) ppm. MS (M+Na): m/z = 346.1.
(S)-tert-butvl 4-(3-chloro-5-( 1,2-dihvdroxyethvl)pyridin-2-yl)piperaZ1ne-1-carboxylate
(FORMULA REMOVED)
To a suspension of 81 (2.84 g, 8.77 mmol) in tert-butanol (60 mL) and water (60 mL) was added AD-mix-a (11.93 g, 8.77 mmol, Sigma-Aldrich) at 0°C. The reaction mixture was stirred at 0°C for 8 hours then extracted three times with diethyl ether (150 mL for each extraction). The oR8anic portions were combined, washed with brine, and concentrated to dryness under reduced pressure. Compound 82 was obtained as a white solid via flash chromatography using an ethyl acetate/hexane gradient as an eluent (90% yield). *H NMR: (CDC13) 8 8.14 (d, J=2.0 Hz, 1H), 7.67 (d, J=2.2 Hz, 1H), 4.79 (m, 1H), 3.77 (m, 1H), 3.64 (m, 1H), 3.56 (m, 4H), 3.28 (m, 4H), 2.87 (d, J=3.2 Hz, 1H), 2.27 (m, 1H), 1.48 (s, 9H) ppm. MS (M+l): m/z = 358.1.
(S)-1 -(5-chloro-6-(piperaZ1n-1 -vl)pyridin-3-yl)ethane-1,2-diol
(FORMULA REMOVED)
A suspension of 82 (2.81 g, 7.85 mmol) and 4M HC1 in dioxane (60 mL) was stirred at a temperature of about 25°C for 1 hour. The reaction mixture was concentrated under reduced pressure to provide 83 as a white solid.
fr5)-N-(4-fgr?-butvlphenvl)-4-(3-chloro-5-(l,2-dihvdroxvethvl)pyridin-2-vl)piperaZ1ne-1 –carboxamide
(FORMULA REMOVED)
To a mixture of 83 (0.5 mmol) in DCM (2.0 mL) and TEA (0.3 mL) was added dropwise a solution of 4-tert-butylphenyl isocyanate (0.5 mmol, Sigma-Aldrich) in DCM (1.0 mL) at 0°C. The reaction mixture was stirred at a temperature of about 25°C for 4 hours. ThereAr2er, silica gel column chromatography using an ethyl acetate/methanol gradient as an eluent provided K6 as a white solid. H NMR: (CD3OD) 8 8.18 (d, J=2.0 Hz, 1H), 7.78 (d, J=2.0 Hz, 1H), 7.30 (m, 4H), 4.66 (t, J=5.5 Hz, 1H), 3.68 (m, 4H), 3.62 (m, 2H), 3.34 (m, 4H), 1.30 (s, 9H) ppm. MS (M+l): m/z = 433.2.
fS)-4-(3-chloro-5-( 1,2-dihvdroxvethvl)pyridin-2-vlV N-(4-(trifluoromethoxy)phenvl)pipcraZ1ne-1 –carboxamide
(FORMULA REMOVED)
To a mixture of 83 (0.5 mmol) in DCM (2.0 mL) and TEA (0.3 mL), was added dropwise a solution of 4-trifluoromethoxyphenyl isocyanate (0.5 mmol, Sigma-Aldrich) in DCM (1.0 mL) at 0°C. The reaction mixture was stirred at a temperature of about 25°C for 4 hours. ThereAr2er, silica gel column chromatography using an ethyl acetate/methanol gradient as an eluent provided L6 as a white solid. ‘H NMR: (CD3OD) 5 8.18 (d, J=1.6 Hz, 1H), 7.78 (d, J=1.7 Hz, 1H), 7.47 (m, 2H), 7.18 (m, 2H), 4.66 (t, J=5.9 Hz, 1H), 3.69 (m, 4H), 3.63 (m, 2H), 3.35 (m, 4H) ppm. MS (M+l): mJz = 461.1.
r5)-4-(3-chloro-5-(1.2-dihvdroxvethvl)pyridin-2-vl)-N-(4-(trifluoromethvl)phenvl)piperaZ1ne-1 -carboxamide
(FORMULA REMOVED)
To a mixture of 83 (0.5 mmol) in DCM (2.0 mL) and TEA (0.3 mL) was added dropwise a solution of 4-trifluoromethylphenyl isocyanate (0.5 mmol, Sigma-Aldrich) in DCM (1.0 mL) at 0°C. The mixture reaction was stirred at a temperature of about 25°C for 4 hours. ThereAr2er, direct flash chromatography using an ethyl acetate/methanol gradient as an eluent provided M6 as a white solid. ‘H NMR: (CD3OD) 5 8.18 (m, 1H), 7.78 (m, 1H), 7.58 (m, 4H), 4.66 (t, J=5.5 Hz, 1H), 3.71 (m, 4H), 3.63 (m, 2H), 3.36 (m, 4H) ppm. MS (M+l): m/z = 445.0.
iV-(6-fluorobenzo \d\ thiazol-2-yl)-1 H-imidazole-1 -carboxamide
(FORMULA REMOVED)
To a solution of 6-fluorobenzo[J]thiazol-2-amine (122, 336 mg, 2 mmol, Sigma-Aldrich) in DMF (5 mL) was added CDI (123, 357 mg, 2.2 mmol, Sigma-Aldrich) at 0°C. Under vigorous stirring, the reaction mixture was slowly allowed to warm to a temperature of about 25°C over 14 h. A white precipitate formed. The precipitate was collected by vacuum filtration, washed twice with EtOAc (10 mL for each wash), and dried under reduced pressure to provide 124 (yield >99%).
(5)-4-(3-chloro-5-(1.2-dmvdroxvethvl)pvridin-2-vlViV’-(6-fluorobenzorcnthiazol-2-yl)piperaZ1ne-1 -carboxamide
(FORMULA REMOVED)
To a mixture of 83 (0.3 mmol) in DCM (2.0 mL) and TEA (0.2 mL) was added dropwise a suspension of 124 (0.3 mmol) in DMF (1.0 mL) at 0°C. The reaction mixture was stirred at a temperature of about 25°C for 4 hours. ThereAr2er, direct flash chromatography using an ethyl acetate/methanol gradient as an eluent provided V6 as a slightly yellowish solid. lH NMR: (CD3SOCD3) 5 8.19 (m, 1H), 7.76 (m, 3H), 7.22 (m, 1H), 5.41 (d, J=4.6 Hz, 1H), 4.79 (t, J=6.0 Hz, 1H), 4.53 (m, 1H), 3.71 (m, 4H), 3.50 (m, 2H), 3.26 (m, 4H) ppm. MS (M+l): m/z = 452.1.
r5)-(4-chloro-3-(trifluoromethvl)phenvl)-4-f 3-chloro-5-( 1.2-dihvdroxyethvl)pvridin-2-vl)piperaZ1ne-1 -carboxamide
(FORMULA REMOVED)
To a mixture of 83 (0.5 mmol) in DCM (2.0 mL) and TEA (0.3 mL) was added dropwise a solution of l-chloro-4-isocyanato-2-(trifluoromethyl)benzene (0.3 mmol, Sigma-Aldrich) in DCM (1.0 mL) at 0°C. The reaction mixture was stirred at a temperature of about 25°C for 4 hours. ThereAr2er, direct flash chromatography using an ethyl acetate/methanol gradient as an eluent provided W6 as a white solid. *H NMR: (CD3OD) 5 8.18 (m, 1H), 7.91 (d, J=2.4 Hz, 1H), 7.78 (d, J=2.6 Hz, 1H), 7.64 (dd, J=2.6, 8.8 Hz, 1H), 7.47 (d, J=9.2 Hz, 1H), 4.66 (m, 1H), 3.70 (m, 4H), 3.63 (m, 2H), 3.35 (m, 4H) ppm. MS (M+l): m/z = 479.1.
Example 4: Synthesis of Compound F4
5.6-dichloro-N-methoxv-Ar-methvlnicotinamide
(FORMULA REMOVED)
To a stirred solution of 5,6-dichloronicotinic acid (87,7 g, 36.5 mmol) in dichloromethane (100 mL) at a temperature of about 25°C was added N, O-dimethylhydroxylamine hydrochloride (3.56 g, 36.5 mmol), l-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC1, 7.69 g, 40.1 mmol), 1-hydroxybenzotriazole (HOBt, 5.42 g, 40.1 mmol), and TEA (7.6 mL, 54.7 mmol). Ar2er being stirred for 4.5 h at a temperature of about 25°C, the reaction mixture was diluted with ethyl acetate. The mixture was washed with water, IN aqueous hydrogen chloride, saturated aqueous sodium hydrogen carbonate and brine, dried (Na2SO4), filtered, and concentrated under reduced pressure to provide 88.
l-(5,6-dichloropvridin-3-vl)ethanone
(FORMULA REMOVED)
To a stirred solution of 88 in tetrahydrofuran (100 mL) was added dropwise a 3M solution of methylmagnesium chloride in THF (18 mL, 54.7 mmol) at 0°C under nitrogen. Ar2er being stirred for 1 h at 0°C, the reaction mixture was partitioned between
ether and saturated aqueous ammonium chloride at 0°C. The aqueous layer was extracted with ethyl acetate. The oR8anic portions were combined, washed with brine, dried (Na2SO4), filtered, and concentrated under reduced pressure. The residue was chromatographed using flash chromatography eluting with a gradient of from 90:10 to 70:30 hexane:ethyl acetate to provide 5.92 g of 89 as a white solid (85% yield for 2 steps).
2-bromo-1 -(5,6-dichloropvridin-3 - vDethanone
(FORMULA REMOVED)
To a stirred solution of 89 (3 g, 15.8 mmol) in glacial acetic acid (25 mL) was added dropwise a solution of bromine (0.81 mL, 15.8 mmol) in glacial acetic acid (5 mL) at a temperature of about 25°C. Ar2er being stirred for 24 h at about 25°C, the reaction mixture was precipitated. The precipitate was filtered off and washed with diethyl ether to provide 3.89 g of 90 as a pale yellow solid (92% yield).
2-(5,6-dichloropvridin-3-vl)-2-oxoethyl acetate
(FORMULA REMOVED)
To a stirred solution of 90 (1 g, 3.72 mmol) in DMF (15 mL) at a temperature of about 25°C was added sodium acetate (457.6 mg, 5.58 mmol). The reaction mixture was heated to 70°C. Ar2er being stirred for 1 h at 70°C, the reaction mixture was cooled to a
temperature of about 25°C and diluted with diethyl ether. The mixture was washed with water, washed with brine, dried (Na2SO4>, filtered, and concentrated under reduced pressure. The residue was chromatographed using flash chromatography eluting with a gradient of from 90:10 to 65:35 hexane:ethyl acetate to provide 563 mg of 91 as a yellow solid (61% yield).
2-(5,6-dichloropvridin-3-vl)-2,2-difluoroethvl acetate
(FORMULA REMOVED)
To a stirred solution of 91 (257 mg, 1.04 mmol) in dichloromethane (10 mL) at a temperature of about 25°C was added bis(2-methoxyethyl)aminosulfur trifluoride (0.57 mL, 3.11 mmol). The reaction mixture was heated to 65°C and stirred for 18 h. ThereAr2er, the reaction mixture was cooled to a temperature of about 0°C and partitioned between ethyl acetate and saturated aqueous sodium hydrogen carbonate. The aqueous layer was extracted with ethyl acetate. The oR8anic portions were combined, washed with brine, dried (Na2SO4), filtered, and concentrated under reduced pressure. The residue was chromatographed using flash chromatography eluting with 90:10 hexane:ethyl acetate to provide 201.3 mg of 92 as a yellow oil (75% yield).
tert -butyl 4-(3-chloro-5-( 1.1 -difluoro-2-hydroxvethyl)pvridin-2-vl)-5,6-dihvdropvridine-l(2fl)-carboxylate
(FORMULA REMOVED)
To stirred solution of 92 (326.2 mg, 1.41 mmol) in dimethoxyethane:ethanol (6 mL, 2:1) at a temperature of about 25°C was added Pd(DPPF)2Cl2 (230.3 mg, 0.282 mmol), boron pinacol ester (436.0 mg, 1.41 mmol), potassium carbonate (389.8 mg, 2.82 mmol), and water (4 mL). The reaction mixture was heated to 70°C and stirred for 1.5 h. ThereAr2er, the reaction mixture was cooled to a temperature of about 0°C and partitioned between ethyl acetate and saturated aqueous ammonium chloride. The aqueous layer was extracted with ethyl acetate. The oR8anic portions were combined, washed with brine, dried (Na2SO4), filtered, and concentrated under reduced pressure. The residue was chromatographed using flash chromatography eluting with a gradient of from 70:30 to 60:40 hexane:ethyl acetate to provide 506.9 mg of 93 as yellow oil (96% yield).
2-(5-chloro-6-(l,2,3,6-tetrahvdropvridin-4-vl)pvridin-3-vl)-2,2-difluoroethanol hydrochloride
(FORMULA REMOVED)
To a stirred solution of 93 (506.9 mg, 1.35 mmol) in dichloromethane (2 mL) at 0°C was added an excess amount of 4N HC1 in dioxane (4 mL). Ar2er heating to a temperature of about 25°C and stirring for 2 h, the reaction mixture was concentrated under reduced pressure. The residue was crystallized from diethyl ether to provide 292.2 mg of the hydrochloride salt of 94 as a pale yellow solid (70% yield).
4-(3-chloro-5-(l.l-difluoro-2-hvdroxvethvl)pvridin-2-vl)-N-(4-(trifluoromethvl)phenvl)-5.6-dihvdropvridine-1 (2fl)-carboxamide
(FORMULA REMOVED)
To a stirred solution of 4-trifluoroaniline (26 mL, 0.289 mmol) in dichloromethane (3 mL) at 0°C was added 4-nitrophenyl chloroformate (58.3 mg, 0.289 mmol) and pyridine (28 mL, 0.347 mmol). Ar2er heating to a temperature of about 25°C and stirring for 2 h, the reaction mixture was cooled to 0°C and 94 (90 mg, 0.289 mmol) and DIEA (0.13 mL, 0.723 mmol) were added. Ar2er 1 h at 0°C, the reaction mixture was concentrated under reduced pressure. The residue was chromatographed using flash chromatography eluting with a gradient of from 70:30 to 65:35 hexane:ethyl acetate. The resulting solid was recrystallized from hexane:ethyl acetate to provide 82.3 mg of F4 as a white solid (62% yield).
Example 5: Synthesis of Compound Q4
2-(fer?-butvldimethvlsilvloxv)-l-(5,6-dichloropyridin-3-vl)ethanone
(FORMULA REMOVED)
To a stirred solution of 67a (19.2 g, 81.4 mmol) in dichloromethane (250 mL) at 0°C under nitrogen was added imidazole (11.1 g, 162 mmol) and tert-butyldimethylsilyl chloride (TBSC1,12.3 g, 81.4 mmol). Ar2er heating to a temperature of about 25°C and stirring for 2.5 h, the reaction mixture was cooled to 0°C and partitioned between diethyl ether and saturated aqueous ammonium chloride. The aqueous layer was extracted with ethyl acetate. The oR8anic portions were combined, washed with brine, dried (Na2SO4), filtered, and concentrated under reduced pressure. The residue was chromatographed using flash chromatography eluting with a gradient of from 90:10 to 80:20 hexane:ethyl acetate to provide 24.1 g of 97 as pale yellow oil (92% yield).
287 2-(R8rf-butvldimethvlsilvloxv)-l-(5,6-dichloropvridin-3-yl)ethanone
(FORMULA REMOVED)
To a stirred solution of silyl ether 97 (8 g, 24.8 mmol) in tetrahydrofuran/methyl sulfoxide (100 mL, 1:1) at a temperature of about 25°C was added o-iodoxybenzoic acid (20.9 g, 74.5 mmol). The reaction mixture was stirred for 5 h at about 25°C. ThereAr2er, the reaction mixture was cooled to a temperature of about 0°C and partitioned between diethyl ether and saturated aqueous sodium hydrogen carbonate. The aqueous layer was extracted with diethyl ether. The oR8anic portions were combined, washed with saturated aqueous sodium hydrogen carbonate, washed with brine, dried (Na2SO4), filtered, and concentrated under reduced pressure. The residue was chromatographed using flash chromatography eluting with 90:10 hexane:ethyl acetate to provide 8.0 g of 98 as a yellow oil (99% yield).
5-(3-(ferr-butvldimethvlsilvloxv)prop-l-en-2-vl)-2,3-dichloropvridine
(FORMULA REMOVED)
To a stirred suspension of methyltriphenylphosphonium bromide (11.8 g, 33.0 mmol) in toluene (100 mL) at 0°C under nitrogen was added potassium tert-butoxide (3.70 g, 33.0 mmol). Ar2er being stirred for 1 h at 0°C, a solution of 98 (8.8 g, 27.5 mmol) in toluene (60 mL) was added dropwise to the reaction mixture over 1 h at 0°C.
Ar2er an additional 2 h at 0°C, the reaction mixture was partitioned between diethyl ether and saturated aqueous ammonium chloride. The aqueous layer was extracted with diethyl ether. The oR8anic portions were combined, washed with water, washed with brine, dried (Na2SO4>, filtered, and concentrated under reduced pressure. The residue was chromatographed using flash chromatography eluting with 90:10 hexane:ethyl acetate to provide 7.6 g of 99 as a yellow oil (87% yield).
3-(fer?-butvldimethvlsilvloxv)-2-(5,6-dichloropvridin-3-vl)propan-l-ol
(FORMULA REMOVED)
To a stirred solution of 99 (7.6 g, 23.9 mmol) in tetrahydrofuran (120 mL) at 0°C under nitrogen was added borane-methyl sulfide complex (2.3 mL, 23.9 mmol). The reaction mixture was heated to a temperature of about 25°C and stirred for 5 h. ThereAr2er, the reaction mixture was cooled to 0°C and to the reaction mixture was added IN sodium hydroxide (48 mL) dropwise followed by the addition of hydrogen peroxide (17 mL, 35 wt% solution in water). Ar2er 2 h more at 0°C, the reaction mixture was partitioned between ethyl acetate and water. The aqueous layer was extracted with ethyl acetate. The oR8anic portions were combined, washed with water, aqueous sodium sulfite and brine, dried (Na2SO4), filtered, and concentrated under reduced pressure. Compound 100 was isolated by silica gel column chromatography as a yellow oil (42% yield).
tert-butvl 4-(5-( 1 -(ferr-butvldimethvlsilvloxy)-3-hvdrox ypropan-2-yl)-3-chloropvridin-2-vl)-5,6-dihvdropyridine-1 (2/D-carboxyIate
(FORMULA REMOVED)
To stirred solution of 100 (1 g, 2.97 mmol) in dimethoxyethane:ethanol (18 mL, 2:1) at a temperature of about 25°C was added Pd(DPPF)2Cl2 (485.6 mg, 0.595 mmol), pinacol ester (919.4 mg, 2.97 mmol), potassium carbonate (821.9 mg, 5.95 mmol), and water (12 mL). The reaction mixture was heated to 60°C and stirred for 1.5 h. ThereAr2er, the reaction mixture was cooled to a temperature of about 0°C and partitioned between ethyl acetate and saturated aqueous ammonium chloride. The aqueous layer was extracted with ethyl acetate. The oR8anic portions were combined, washed with brine, dried (Na2SO4), filtered, and concentrated under reduced pressure. The residue was chromatographed using flash chromatography eluting with a gradient of from 70:30 to 40:60 hexane:ethyl acetate to provide 1.49 g of 101 as a yellow oil (>99% yield).
2-(5-chloro-6-( 1,2,3,6-tetrahydropvridin-4-yl)pyridin-3-vl)propane-1,3-diol hydrochloride
(FORMULA REMOVED)
To a stirred solution of 101 (1.49 g, 2.97 mmol) in dichloromethane (7 mL) and methanol (2 mL) at 25°C was added excess amount of 4N HC1 in dioxane (7.5 mL).
Ar2er being stirred for 2 h at a temperature of about 25°C, the reaction mixture was concentrated under reduced pressure. The residue was crystallized from diethyl ether to provide 606.3 mg of the hydrochloride salt of 102 as a pale brown solid (70% yield).
4-(3-chloro-5-( 1,3-dihvdroxvpropan-2-vl)pvridin-2-vl)-N-(4-(trifluoromethvl)phenvl)-5,6-dihvdropyridine-1 (2fl)-carboxamide
(FORMULA REMOVED)
To a stirred solution of 4-trifluoroaniline (29 mL, 0.328 mmol) in dichloromethane (3.5 mL) at 0°C was added 4-nitrophemyl chloroformate (66.0 mg, 0.328 mmol) and pyridine (32 mL, 0.393 mmol). Ar2er heating to a temperature of about 25°C, the reaction mixture was stirred for 2 h. ThereAr2er, the reaction mixture was cooled to 0°C and the hydrochloride salt of 102 (100 mg, 0.328 mmol) and DIEA (0.14 mL, 0.819 mmol) were added. Ar2er 1 h more at 0°C, the reaction mixture was partitioned between ethyl acetate and water. The aqueous layer was extracted with ethyl acetate. The oR8anic portions were combined, washed with saturated aqueous sodium hydrogen carbonate and brine, dried (Na2SO4), filtered, and concentrated under reduced pressure. The residue was chromatographed using flash chromatography eluting with a gradient of from 95:5 to 90:10 chloroforrmmethanol. The resulting solid was recrystallized from isopropyl ethenethyl acetate to provide 97.2 mg of 04 as a white solid (65% yield).
Example 6: Determination of the Optical Purity for Bl and Nl:
The % ee was determined for compounds Bl and Nl as shown below:
(FORMULA REMOVED)
*H NMR and chiral HPLC were used to determine the % ee for both Nl and Bl. For the HPLC assay, a CHIRALPAK 1A column was used, the peak areas for the major and minor enantiomers were determined, and % ee was calculated from the equation in section 5.3. For ‘H NMR, bis-Mosher’s ester derivatives were synthesized for Al, Bl, and Nl by a technique known in the art. The % ee determinations were done by adding an excess of Mosher’s acid chloride to Al, Bl, or Nl (about 0.6 mg) in pyridine-d5 (0.530 mL) at a temperature of about 25°C in an NMR tube. A *H NMR was taken 20 h Ar2er the addition of Mosher’s acid chloride. The peak chosen for the bis-Mosher’s ester of Nl is at approximately 8 6.90, and for Bl at 8 6.78. It is important to note the 13C satellites were observed at 8 (7.02 and 6.78) for Nl and 8 (6.90 and 6.65) for Bl. The *H NMR peaks for the minor and major enantiomer in each case were integrated, the 13C satellites were subtracted out, and the % ee was calculated.
Example 7; Synthesis of Compound M4
2,3-dichloro-5-methylsulfonamidvlmethvl pyridine
(FORMULA REMOVED)
To a suspension of methyl sulfonamide (1.08 g, 11.35 mmol), 2,3-dichloropyridinyl aldehyde, (79, 3.0 g, 17.03 mmol), AcOH (1.35 mL), and NaBH(OAc)3 in dry dichloromethane (70 mL) at 0°C, TEA (3.18 mL, 22.7 mmol) was added. The reaction mixture was heated to a temperature of about 25°C and stirred for 15 h. ThereAr2er, saturated NaHC03 (2 mL) was added. The mixture was extracted twice with ethyl acetate (80mL for each extraction). The oR8anic portions were combined, washed twice with brine (50mL for each wash), dried over anhydrous Na2SO4, and concentrated under reduced pressure. The oily residue was chromatographed using a COMBIFLASH apparatus with a 40 g REDLSEP column with eluent of 40% ethyl acetate in hexanes to provide 2.8 g of 105 (65% yield) and 20% recovered starting material. lH NMR (CDC13): 8 8.38 (s, 1H), 8.27 (s, 1H), 5.03 (bs, NH), 4.35 (d, J=17Hz, 2H), 3.0 (s, 3H).
ferf-butvl4-(3-chloro-5-(methvlsulfonamidomethvl)pvridin-2-vl)-5,6-dihvdropvridine-l(2H)-carboxvlate
(FORMULA REMOVED)
To a suspension of 105 (3.86g, 15.1mmol), boronate (4.78,15.1 mmol), and Pd(PPh3)2Cl2 in ethylene glycol dimethyl ether (38 mL) and EtOH (19 mL) at a temperature of about 25°C was added 2M K2CO3 (15 mL). The reaction mixture was heated 40°C for 9hr. ThereAr2er, the reaction mixture was cooled to a temperature of about 25°C, IN HC1 (10 mL) was added. The mixture was extracted twice with ethyl acetate (60 mL for each extraction). The oR8anic portions were combined, washed with water, dried over anhydrous Na2SO4, and concentrated under reduced pressure to provide the oily residue which was then chromatographed using a COMBIFLASH apparatus with a 80 g KEDISEP column with 30% EtOAc in hexanes to provide 5.0g of 106 (83% yield). lU NMR (CDC13): 8 8.35(s, 1H), 7.70 (s, 1H), 6.03 (bs, 1H), 5.34 (bs, t, NH), 4.26 (d, J=6.3Hz, 2H), 4.10 (m, 2H), 3.55 (t, J=5.6Hz, 2H), 2.89 (s, 3H), 1.42 (s, 9H).
JV-((5-chloro-6-(l,2,3,6-tetrahvdropvridin-4-vl”)pvridin-3-vnmethvl)methane sulfonamide hydrochloride
(FORMULA REMOVED)
Compound 106 (l.Og, 2.5mmol) was dissolved in dry dichloromethane (10 mL) and cooled to 0°C. 4N HC1 in dioxane (10 mL, 25mmol) was added. The reaction mixture was heated a temperature of about 25°C and stirred for 16 h. The resulting white slurry was filtered and, Ar2er drying under reduced pressure, 790 mg of the hydrochloride of 107 was collected as an off-white solid (94% yield).
4-(3-chloro-5-(methvlsulfonamidomethvl)pvridin-2-yl)-N-(4-(trifluoromethvl)phenvl)-5.6-dihvdropvridine-1 (2/f)-carboxamide
(FORMULA REMOVED)
To a suspension of salt (4, 790mg, 2.34mmol) in dichloromethane at 0°C was added DIEA (1.21 mL, 7.03 mmol). The reaction mixture was stirred until it became homogenous. a,a,a-trifluoro-p-tolyl isocyanate (0.3 mL, 2.22mmol) was added thereto and the reaction mixture stirred for 10 min, until the reaction was complete. The reaction mixture was concentrated under reduced pressure. The oily residue was chromatographed using a COMBIFLASH apparatus with a 12 g REDLSZsP column with 50% EtOAc in hexanes to provide 812 mg of M4 as a white solid (71% yield). ‘H NMR (CDC13): 8 8.98 (s, 1H), 8.49 (s, 1H), 7.89-7.54 (m, 4H), 6.2 (bs, NH), 4.20-4.24 (m, 4H), 3.70 (t, J=5.5Hz, 2H), 2.96 (s, 3H), 2.51-2.33 (bs, 2H).
Example 8: Synthesis of Compound N3
(FORMULA REMOVED)
297 Phenyl 5-(trifluoromemyl)pvridin-2-vlcarbamate
To a stirred solution of 5-(trifluoromethyl)pyridin-2-amine 108 (20 g, 123.5 mmol) in dichloromethane (85 mL) at -5°C was slowly added phenyl carbonochloridate 109 (21.2 g, 136 mmol) over 10 min. At -5°C, pyridine (11.1 mL, 136 mmol) was then added drop wise to the reaction mixture. Ar2er heating the reaction mixture to a temperature of about 25°C and stirring for 1 h, a precipitate gradually formed. The precipitate was filtered and washed with dichloromethane and ethyl acetate to provide 24.1 g of 110 as a white solid (69.2% yield). ‘H NMR (400 MHz, DMSO-d6) 8 11.3 (br s, 1H), 8.75-8.70 (m, 1H), 8.24-8.17 (m, 1H), 8.05-7.98 (m, 1H), 7.50-7.40 (m, 2H), 7.33-7.22 (m, 2H).
(i?)-l-(5-chloro-6-(l,2.3.6-tetrahvdropvridin-4-vl)pvridin-3-vl)ethane-l,2-diol
The title compound 111 was obtained using a procedure similar to that described in Example 1 for obtaining 70 except that 67b was used in place of 67a.
(/?)-4-(3-chloro-5-( 1.2-dihvdroxvethvl)pyridin-2-vl)-N-(5-(trifluoromethvl)pvridin-2-vl)-5.6-dihvdropvridine-1 (2/f)-carboxamide
To a stirred suspension of the hydrochloride salt of 111 (9.36 g, 32.26 mmol) in dichloromethane (30 mL) at -20°C was added 110 (8.19 g, 29 mmol) in one portion. Then at -20°C, DIEA (14 mL, 80.65 mmol) was added drop wise to the reaction mixture over 15 min. Ar2er being stirred for 2 h at -20°C, the reaction mixture was diluted with 200 mL of dichloromethane, washed twice with IN aqueous sodium hydroxide (200 mL for each wash), dried (Na2SO4), filtered, and concentrated under reduced pressure. The residue (12 g) was dissolved in 25 mL hot ethyl acetate and allowed to cool slowly. The precipitate was collected by vacuum filtration and washed twice with a solution of 50% ethyl acetate in hexane (100 mL for each wash) to provide 10.15 g of N3 as a white solid (71% yield). ‘H NMR (400 MHz, DMSO-d6) 5 9.88 (s, 1H), 8.66-8.60 (m, 1H), 8.49-8.44 (m, 1H), 8.10-8.03 (m, 1H), 8.03-7.96 (m, 1H), 7.85-7.81 (m, 1H), 6.21-6.14 (m, 1H), 5.57-5.51 (m 1H), 4.89-4.82 (m, 1H), 4.64-4.57 (m, 1H), 4.25-4.19 (m, 2H), 3.76-3.67 (m, 2H), 3.60-3.43 (m, 2H), 2.62-2.52 (m, 2H).
Example 9: Synthesis of Compounds of Formula I
Using procedures similar to those described above, the following compounds of formula I were prepared.
(FORMULA REMOVED)
N6: !H NMR (CD3OD) 8 8.41 (s, 1H), 7.59 (m, 5H), 4.80 (t, J=6 Hz, 1H), 4.15 (m, 2H), 3.69 (m, 2H), 3.45 (m, 2H), 2.45-2.26 (m, 4H). MS (M+l): m/z = 446.1.
06: ‘H NMR (CD3OD) 8 8.38 (m, 1H), 7.79 (m, 1H), 7.68 (m, 1H), 7.52 (d, J=8 Hz, 1H), 7.38 (m, 1H), 4.65 (t, J=6 Hz, 1H), 4.04 (m, 2H), 3.57 (m, 2H), 3.33 (m, 2H), 2.39-2.21 (m, 4H). MS (M+l): m/z = 496.0.
P6: !H NMR (CD3OD) 8 8.55 (m, 1H), 8.41 (s, 1H), 7.98 (m, 2H), 7.67 (m, 1H), 4.80 (t, J=6 Hz, 1H), 4.18 (m, 2H), 3.70 (m, 2H), 3.48 (m, 2H), 2.46-2.26 (m, 4H). MS (M+l): m/z = 447.1.
(FORMULA REMOVED)
Fl: *H NMR (CD3OD) 8 8.38 (m, 1H), 7.79 (m, 1H), 7.44 (m, 2H), 7.21 (m, 1H), 4.65 (t, J=5.6 Hz, 1H), 4.05 (m, 2H), 3.56 (m, 2H), 3.33 (m, 2H), 2.38-2.2.21 (m, 4H). MS(M+1): m/z = 480.0.
Gl: ‘H NMR (CD3OD) 8 8.43 (m, 1H), 8.37 (d, J=2 Hz, 1H), 7.87 (m, 2H), 7.79 (m, 1H), 4.65 (t, J=6 Hz, 1H), 4.08 (m, 2H), 3.57 (m, 2H), 3.35 (m, 2H), 2.38-2.22 (m, 4H). MS(M+1): m/z = 463.1.
T5: !H NMR (CD3OD) 8 8.64 (dd, J=1.8, 0.6 Hz, 1H), 8.04 (d, J=2.1, 0.3 Hz, 1H), 7.59 (dd, J=14.4, 8.9 Hz, 4H), 4.19-4.15 (br d, J=13.8 Hz, 2H), 3.78 (dd, J=24.8, 11.3 Hz, 4H), 3.49-3.42 (m,2H), 2.49-2.34 (m,4H). MS (M+l): m/z = 492.
(FORMULA REMOVED)
LI: ‘H NMR (CD3OD) 5 8.37 (s, 1H), 7.79 (s, 1H), 7.42 (m, 2H), 7.02 (m, 1H), 4.64 (t, J=6 Hz, 1H), 4.21 (m, 2H), 3.56 (m, 2H), 3.35 (m, 2H), 2.35-2.20 (m, 4H). MS (M+l): m/z = 469.0.
HI: *H NMR (CD3OD) 5 8.38 (m, 1H), 7.82 (m, 3H), 7.70 (m, 2H), 4.64 (t, J=6 Hz, 1H), 4.06 (m, 2H), 3.57 (m, 2H), 3.36 (m, 2H), 2.40-2.23 (m, 4H). MS (M+l): m/z = 526.0.
Q3: ‘H NMR (CD3OD) S 8.39 (s, 1H), 7.78 (m, 1H), 7.63 (m, 2H), 7.48 (m, 1H), 4.78 (t, J=6 Hz, 1H), 4.13 (m, 2H), 3.67 (m, 2H), 3.43 (m, 2H), 2.43-2.23 (m, 4H). MS (M+l): m/z = 480.5.
(FORMULA REMOVED)
Y3: ‘H NMR (CD3OD) 8 8.41 (m, 1H), 7.67 (m, 1H), 7.55 (m, 2H), 7.34 (m, 1H), 4.79 (t, J=6 Hz, 1H), 4.14 (m, 2H), 3.69 (m, 2H), 3.46 (m, 2H), 2.43-2.26 (m, 4H). MS(M+1): m/z = 464.1.
F5: *H NMR (CD3OD) 8 8.41 (s, 1H), 7.65 (d, J=12 Hz, 1H), 7.53 (m, 2H), 7.14 (m, 1H), 4.79 (t, J=6 Hz, 1H), 4.28 (m, 2H), 3.69 (m, 2H), 3.48 (m, 2H), 2.45-2.26 (m, 4H). MS(M+1): m/z = 453.1.
Q6: lH NMR (CD3OD) 8 8.41 (s, 1H), 7.66 (m, 1H), 7.41 (m, 2H), 7.10 (m, 2H), 4.80 (t, J=6 Hz, 1H), 4.08 (m, 2H), 3.69 (m, 2H), 3.50 (m, 2H), 2.49-2.23 (m, 4H), 1.33 (s, 9H). MS (M+l): m/z = 458.5.
(FORMULA REMOVED)
Ul: ‘H NMR (MeOD) 8 8.44-8.38 (1H, m), 7.68-7.54 (5H, m), 6.60-6.53 (1H, m), 4.82-4.74 (1H, m), 4.34-4.25 (2H, m), 3.84-3.75 (2H, m), 3.74-3.66 (2H, m), 2.82-2.72 (2H,m). MS: m/z = 425.
Ql: ‘H NMR (MeOD) 8 8.51-8.46 (1H, m), 7.99-7.92 (3H, m), 7.89-7.82 (2H, m), 6.17-6.12 (1H, m), 4.80-4.73 (1H, m), 4.33-4.25 (2H, m), 3.87-3.76 (2H, m), 3.75-3.64 (2H, m), 2.70-2.61 (2H, m). MS: m/z = 505.
Jl: *H NMR (MeOD) 8 8.44-8.37 (1H, m), 7.96-7.89 (1H, m), 7.69-7.51 (3H, m), 7.41-7.34 (1H, m), 6.60-6.53 (1H, m), 4.83-4.75 (1H, m), 4.34-4.26 (2H, m), 3.83-3.75 (2H, m), 3.74-3.65 (2H, m), 2.82-2.73 (2H, m). MS: m/z = 443.
(FORMULA REMOVED)
PI: ‘H NMR (MeOD) 8 8.47-8.37 (1H, m), 8.05-7.83 (5H, m), 7.71-7.59 (1H, m), 6.66-6.53 (1H, m), 4.85-4.74 (1H, m), 4.42-4.28 (2H, m), 3.91-3.64 (4H, m), 2.89-2.74 (2H,m). MS: m/z = 489.
Kl: ‘H NMR (CDC13) 8 8.51-8.43 (2H, m), 8.25-8.18 (1H, m), 7.92-7.85 (1H, m), 7.83-7.78 (1H, m), 7.53 (1H, br s), 6.22-6.15 (1H, m), 4.95-4.84 (1H, m), 4.31-4.19 (2H, m), 3.93-3.64 (4H, m), 3.08-2.97 (1H, m), 2.77-2.63 (2H, m), 2.24-2.14 (1H, m). MS: m/z = 442.
Rl: *H NMR (DMSO) 8 8.50-8.44 (1H, m), 7.87-7.82 (1H, m), 7.82-7.75 (1H, m), 7.70 (1H, br s), 7.26-7.17 (1H, m), 6.23-6.17 (1H, m), 5.58-5.51 (1H, m), 4.89-4.82 (1H, m), 4.64-4.57 (1H, m), 4.31-4.21 (2H, m), 3.85-3.73 (2H, m), 3.60-3.42 (2H, m), 2.61-2.51 (2H, m). MS: m/z = 448.
(FORMULA REMOVED)
U3: ‘H NMR (MeOD) 8 8.42-8.36 (1H, m), 7.92 (1H, s), 7.83-7.77 (1H, m), 7.67-7.58 (2H, m), 7.55-7.48 (1H, m), 6.58-6.52 (1H, m), 4.80-4.72 (1H, m), 4.31-4.24 (2H, m), 3.81-3.74 (2H, m), 3.72-3.63 (2H, m), 2.80-2.71 (2H, m). MS: m/z = 459.
L4: ‘H NMR (DMSO) 5 8.45-8.33 (1H, m), 7.85-7.73 (1H, m), 7.69-7.51 (2H, m), 7.29-7.51 (1H, m), 6.63-6.49 (1H, m), 5.62-5.49 (1H, m), 4.91-4.79 (1H, m), 4.70-4.56 (1H, m), 4.37-4.23 (2H, m), 3.87-3.71 (2H, m), 3.59-3.41 (2H, m), 2.73-2.59 (2H, m). MS: m/z = 432.
K4: !H NMR (MeOD) 5 8.61-8.49 (1H, m), 8.46-8.34 (1H, m), 8.09-7.87 (2H, m), 7.70-7.56 (1H, m), 6.63-6.51 (1H, m), 4.82-4.72 (1H, m), 4.38-4.26 (2H, m), 3.89-3.75 (2H, m), 3.74-3.62 (2H, m), 2.84-2.70 (2H, m). MS: m/z = 426.
Example 10: Alternate Synthesis of Compound 67a
5,6-dichloronicotinovl chloride
(FORMULA REMOVED)
To a well stirred suspension of 5,6-dichloronicotinic acid 112 (600g. 3.125 mol) and iV.iV-dimethylformamide (20.0 mL) in dichloroethane (1.2 L) a temperature of about 25°C was added drop wise with stirring thionyl chloride (743.56 g, 6.25 mol). In a reflux apparatus fitted with a gas trap filled with saturated aqueous sodium bicarbonate, the reaction mixture was heated and refluxed, at about to 75°C, until the reaction mixture became a clear solution, Ar2er about 3 h. LC/MS analysis of a sample quenched in methanol showed only the presence of the methyl ester. The reaction mixture was cooled to a temperature of about 25°C and concentrated under reduced pressure to provide 113 as a thick slurry.
l-(5.6-dichloropvridin-3-vl)ethanone
(FORMULA REMOVED)
In a dry ice/acetone bath, a suspension of N, O-dimethylhydroxylamine hydrochloride (350.53 g, 3.59 mol) in methylene chloride was cooled to 0°C and TEA (711.5 g, 7.03 mol) was added. Compound 113 was dissolved in methylene chloride (2.4 L) and added to the mixture at a rate such that the reaction mixture temperature did not exceed 15°C. Ar2er the addition of 113 was complete, the reaction mixture was allowed to warm slowly to a temperature of about 25°C over 16 h. Then the reaction mixture was poured into 2L of water, the layers were separated, and the aqueous portion was extracted twice with methylene chloride (500 mL for each extraction). The oR8anic portions were combined, dried (MgSCU), and concentrated under reduced pressure to yield a brown solid. The solid was treated with 1L of boiling hexanes and heated at reflux for about 10 minutes. The resulting pale orange solution was decanted from the dark yellow-brown tar and allowed to cool. This boiling hexanes treatment was repeated twice on the tar (500 mL for each treatment). The hexane mixtures were combined, allowed to cool to a temperature of about 25°C, then cooled in an ice/water bath. The resulting yellow needles were collected by vacuum filtration and dried in air to provide 730 g of 5,6-dichloro-iV-methoxy-iV-methylnicotinamide 114 (99% yield). lK NMR (400 MHz, CDC13) 5 8.68 (m, 1H), 8.18 (m, 1H), 3.59 (OCH3, 3H), 3.40, (NCH3, 3H).
431 g of 115 was obtained using a procedure similar to that described in Example 4 for obtaining 89 except that 114 was used in place of 88 (97% yield). *H NMR (400 MHz, CDCI3) 8 8.82 (m, 1H), 8.29 (m, 1H), 2.62 (COCH3, 3H).
l-(5.6-dichloropyridin-3-yl)ethanol
(FORMULA REMOVED)
To a well-stirred suspension of 115 (665 g, 3.5 mol) in methanol (3.5L) at 0°C was added sodium borohydride (66.21 g, 1.75 mol) portionwise at a rate such that the
reaction mixture temperature did not exceed 5°C. Ar2er the addition was complete, the reaction mixture was warmed to a temperature of about 25°C and stirred an additional 1 h. LC/MS analysis of an aliquot showed that the reaction was essentially complete. The reaction mixture was concentrated under reduced pressure. The residue was mixed with 2L diethyl ether and 2L IN HC1. The layers were separated and the aqueous layer was extracted twice with diethyl ether (250 mL for each extraction). The oR8anic portions were combined, dried (MgSO4), and concentrated under reduced pressure to provide 670g of 116 as a pale yellow oil (99% yield). ‘H NMR (400 MHz, CDC13) 5 8.20 (m, 1H), 4.96 (m, 1H), 3.57 (s, 1H), 1.51 (d, J=6.5Hz, 3H). 2,3 -dichloro-5 -vinvlpvridine
(FORMULA REMOVED)
To a solution of 116 (311 g, 1.62 mol) in chlorobenzene (3 L) was added p-toluene sulfonic acid (431 g, 2.5 mol). The reaction mixture was heated to reflux, about 140°C, and water was removed concurrently. At the completion of the reaction, the mixture was concentrated under reduced pressure to about 500 mL, diluted with 2L of water, and extracted three times with ethyl acetate (1L for each extraction). The oR8anic portions were combined, dried (Na2S O4), and concentrated under reduced pressure under mild heating to provide a residue. The residue was added to 500 mL of methylene chloride and applied to the top of column packed with 2 kg silica eluted with a 0% to 10% gradient of ethyl acetate in hexane to provide 178.55 g of >99% pure 2,3-dichloro-5-vinylpyridine 66 as a clear oil, which solidified upon cooling to 4°C (63% yield). *H NMR (400 MHz, CDC13) 8 8.32 (m, 1H), 7.85 (m, 1H), 5.72 (m, 1H), 4.88 (m, 1H), 4.37 (m, 1H).
308 (S)-1 -(5,6-dichloropvridin-3-vl)ethane- 1,2-diol
(FORMULA REMOVED)
In a 5 L three neck round bottom flask fitted with an overhead mechanical stirrer and a thermocouple, a stirred mixture of 66 (150 g, 0.861 mol), f-butanol (2.15L), and water (2.15L) was cooled with an ice/water bath until the temperature of the mixture was below 10°C. AD-mix a (729 g, 1.15 eq.) was added all at once; an endothermic heat of solution lowered the temperature of the reaction mixture to 7°C. The bath was packed with ice and the reaction mixture was allowed to stir for 16 h while its temperature gradually increased to about 25°C. ThereAr2er, an aliquot of the reaction mixture was removed, diluted with methanol, filtered, and analyzed by LC/MS; the LC/MS results showed that the reaction was essentially complete.
To promote clumping of the solids and aid filtration, the reaction mixture was diluted with 2L ethyl acetate and filtered under reduced pressure to remove the solids. The resulting clear mixture was phase separated. The aqueous portion was extracted twice with ethyl acetate (250mL for each extraction). The oR8anic portions were combined, dried (MgSO4) and concentrated under reduced pressure to provide a dark gray solid. The solid was added to 500 mL of methanol, treated with decoloriZ1ng carbon, boiled, filtered warm through a pad of CELITE, and concentrated under reduced pressure to provide a gray solid. The solid was recrystallized from chloroform to provide 115 g of 67a as a white solid. A second crop of 67a, 12.3 g, was obtained by concentrating the supernatant (71% total yield). lH NMR (400 MHz, CD3OD) 8 8.32 (m, 1H), 8.0 (m, 1H), 4.75 (t, J=6Hz, 1H), 3.65 (m, 2H).
Example 10A: Synthesis of Compound E6
(5,6-dicMoropyridin-3-vl)methvImethanesulfonate
(FORMULA REMOVED)
To a solution of (5,6-dichloropyridin-3-yl)methanol (117, 5000 mg, 28.1 mmol, Tokyo Chemical Industry Co., Tokyo, Japan) in CH2CI2 (150 mL) at a temperature of about 25°C was added DffiA (30.9 mmol). The mixture was cooled to 0°C and methansulfonyl chloride (MsCl, 30.9 mmol) was added dropwise over 15 min. ThereAr2er, the reaction mixture was stirred at 0°C for lh. Ar2er quenching with water, the mixture was extracted three times with CHCI3/H2O (100 mL for each extraction), dried (MgSO.*), and concentrated under reduced pressure to provide a yellow oil. The oil was chromatographed by silica gel column chromatography (Yamazen) with a gradient of ethyl acetate (20%-50%)/n-hexane to provide 6360 mg of 118 as a yellow oil (88% yield). *H NMR (400MHz, DMSO) 8: 8.51 (1H, s), 8.26 (1H, s), 5.35 (2H, s), 3.32 (3H, s).
2-(5,6-dichloropvridin-3-vl)acetonitrile
(FORMULA REMOVED)
To a solution of 118 (6360 mg, 24.8 mmol) in ethanol (75 mL) at a temperature of about 25°C was added a solution of NaCN (32.3 mmol) in water (25 mL). The reaction mixture was heated to 80°C and stirred for lh. Ar2er concentration under
reduced pressure, the mixture was extracted three times with EtOAc/H20 (100 mL for each extraction), dried (Na2SO4), and concentrated under reduced pressure to provide an orange oil. The oil was chromatographed by silica gel column chromatography (Yamazen) with a gradient of ethyl acetate (30%-50%)/n-hexane to provide 2648 mg of 119 as a colorless solid (57% yield). ‘H NMR (400MHZ, DMSO) 6: 8.42 (1H, s), 8.18 (lH,s),4.15(2H,s).
fer?-butvl4-(3 (FORMULA REMOVED)
To a mixture of 119 (187 mg, 1 mmol), 68 (1 mmol), and Na2C03 (1.5 mmol) in 2/1/2 DME/EtOH/H20 (10 mL) at a temperature of about 25°C was added Pd(PPh3)2Cl2 (0.1 mmol). The reaction mixture was heated to 120°C and stirred for 30 min. Ar2er cooling to a temperature of about 25°C, the mixture was diluted with water, extracted three times with CHCl3/H20 (30 mL for each extraction), dried (Na2SO4), and concentrated under reduced pressure to provide a yellow oil. The oil was chromatographed by silica gel column chromatography (Yamazen) with a gradient of ethyl acetate (20%-50%)/n-hexane to provide 287 mg of 120 as a pale yellow oil (86% yield). ‘H NMR (400MHz, DMSO) 5: 8.50 (1H, s), 7.95 (1H, s), 6.17 (1H, s), 4.11 (2H, s), 4.02 (2H, s), 3.54 (2H, m), 2.47 (2H, m), 1.43 (9H, s).

311 2-(“5-chloro-6-(l,2,3.6-tetrahvdropyridin-4-yl)pvridin-3-vl)acetonitrile
(FORMULA REMOVED)
To a solution of 120 (287 mg, 0.86 mmol) in CH2C12 (3 mL) at 0°C was added trifluoroacetic acid (TFA, 8.6 mmol). The reaction mixture was heated to a temperature of about 25°C and stirred for 45 min. Ar2er concentration under reduced pressure, the mixture was neutralized with 28% aqueous ammonia, extracted three times with CHCI3/H2O (50 mL for each extraction), dried (Na2SO4), and concentrated under reduced pressure to provide 200 mg of 121 as a yellow oil (>99% yield). *H NMR (400MHz, DMSO) 5: 8.53 (1H, s), 7.98 (1H, s), 6.12 (1H, s), 4.11 (2H, s), 3.40 (2H, s), 3.19 (1H, br), 2.90 (2H, s), 2.24 (2H, s).
4-(3-chloro-5-(cvanomethvl)pvridin-2-vl)-N-(4-(trifluoromethvl)phenyl)-5,6-dihvdropyridine-1 (2/D-carboxamide
(FORMULA REMOVED)
To a solution of 121 (200 mg, 0.86 mmol) in CH2C12 (7 mL) at a temperature of about 25°C was added l-isocyanato-4-(trifluoromethyl)benzene (0.86 mmol, Acros OR8anics, Geel, Belgium). The reaction mixture was stirred at a temperature of about 25°C for 1.5h. Ar2er concentration under reduced pressure, the mixture was chromatographed by silica gel column chromatography (Yamazen) with a gradient of CHC13 (99%-20%)/MeOH to provide 64 mg of E6 as a colorless solid (18% yield). ‘H NMR (400MHz, DMSO) 8: 8.96 (1H, s), 8.52(1H, s), 7.97 (1H, s), 7.73 (1H, d, J=8Hz), 7.60 (1H, d, J=8Hz), 6.25 (1H, s), 4.21 (2H, s), 4.12 (2H, s), 3.70 (2H, t, J=8Hz), 2.58 (1H, s), 2.50 (1H, s). LC/MS (100%, tr = 6.72 min) [M + H]+, m/z = 420.8 (Calc: 420.1).
Example 10B: Synthesis of Compound LI
(S)-4-(3-chloro-5-( 1.2-dihvdroxvethvl)pvridin-2-vn-4-fluoro-N-(6-fluorobenzor^thiazol-2-vl)piperidine-1 -carboxamide
(FORMULA REMOVED)
A 100 mL round bottom flask was chaR8ed with 78 (800 mg, 2.56 mmol) suspended in DMF (2 mL). DffiA (0.87 mL, 5.12 mmol) and 124 (672 mg, 2.56 mmol) were added. The resulting reaction mixture was stirred at a temperature of about 25°C until all the solids dissolved, about 2 h. The reaction mixture diluted with water; an off-
white precipitate formed. The precipitate was collected by vacuum filtration. The precipitate was washed with water, washed twice with DCM (10 mL for each wash), and dried under reduced pressure to provide 1.0 g of LI (yield 90%) which was then recrystalized from EtOAc/MeOH. ‘H NMR: 8 8.35 (s, 1H), 7.80 (s, 1H), 7.35(m, 2H), 6.98(m, 1H), 4.70 (t, 1H), 4.2(m, 2H), 3.6 (m, 2H), 3.3 (m, 2H), 2.25(m, 4H) ppm. MS (M+l): m/z = 468.
6.2 EXAMPLE 11: IN VIVO ASSAYS FOR PREVENTION OR TREATMENT OF PAIN
Test Animals: Each experiment uses rats weighing between 200-260 g at the start of the experiment. The rats are group-housed and have free access to food and water at all times, except pR10r to oral administration of a compound of formula I when food is removed for 16 hours before dosing. A control group acts as a compAr1son to rats treated with a compound of formula I. The control group is administered the carrier for the compound of formula I. The volume of carrier administered to the control group is the same as the volume of carrier and compound of formula I administered to the test group.
Acute Pain: To assess the actions of the compounds of formula I on the treatment or prevention of acute pain the rat tail flick test can be used. Rats are gently restrained by hand and the tail exposed to a focused beam of radiant heat at a point 5 cm from the tip using a tail flick unit (Model 7360, commercially available from Ugo Basile of Italy). Tail flick latencies are as defined as the interval between the onset of the thermal stimulus and the flick of the tail. Animals not responding within 20 seconds are removed from the tail flick unit and assigned a withdrawal latency of 20 seconds. Tail flick latencies are measured immediately before (pre-treatment) and 1,3, and 5 hours following administration of a compound of formula I. Data are expressed as tail flick latency(s) and the percentage of the maximal possible effect (% MPE), i.e., 20 seconds, is calculated as follows:
(FORMULA REMOVED)
The rat tail flick test is described in F.E. D’Amour et al, “A Method for Determining Loss of Pain Sensation,” J. Pharmacol Exp. Ther. 72:74-79 (1941).
Acute pain can also be assessed by measuring the animal’s response to noxious mechanical stimuli by determining the paw withdrawal threshold (“PWT”), as described below.
Inflammatory Pain: To assess the actions of the compounds of formula I on the treatment or prevention of inflammatory pain the Freund’s complete adjuvant (“FCA”) model of inflammatory pain is used. FCA-induced inflammation of the rat hind paw is associated with the development of persistent inflammatory mechanical and thermal hyperalgesia and provides reliable prediction of the anti-hyperalgesic action of clinically useful analgesic drugs (L. Bartho et al, “Involvement of Capsaicin-sensitive Neurones in Hyperalgesia and Enhanced Opioid Antinociception in Inflammation,” Naunyn-SchmiedebeR8’s Archives of Pharmacol 342:666-670 (199O)). The left hind paw of each animal is administered a 50 uL intraplantar injection of 50% FCA. 24 hour post injection, the animal is assessed for response to noxious mechanical stimuli by determining the PWT, or to noxious thermal stimuli by determining the PWL, as described below. Rats are then administered a single injection of 1, 3, 10 or 30 mg/Kg of either a compound of formula I; 30 mg/Kg of a control selected from Celebrex, indomethacin or naproxen; or carrier. Responses to noxious mechanical or thermal stimuli are then determined 1, 3,5 and 24 hours post administration. Percentage reversal of hyperalgesia for each animal is defined as:
(FORMULA REMOVED)
Assessments of the actions of the compounds of formula IE that were tested revealed these compounds were surprisingly efficaC10us, e.g., compounds of formula III significantly reduced FCA-induced thermal hyperalgesia, with ED50 values of from about 0.1 mg/kg to about 10 mg/kg and maximum % reversal values of from about 50% to about 100%. For example, for compound D2 the ED50 value for reversal of thermal hyperalgesia was 0.95 mg/kg at 3 hours Ar2er administration and 1.63 mg/kg at 5 hours
Ar2er administration of D2. Additionally, the maximum % reversal of thermal hyperalgesia was 78.7% at 5 hours Ar2er administration of D2.
Neuropathic Pain: To assess the actions of the compounds of formula I for the treatment or prevention of neuropathic pain either the Seltzer model or the Chung model can be used.
In the Seltzer model, the partial sciatic nerve ligation model of neuropathic pain is used to produce neuropathic hyperalgesia in rats (Z. Seltzer et al, “A Novel Behavioral Model of Neuropathic Pain Disorders Produced in Rats by Partial Sciatic Nerve Injury,” Pain 43:205-218 (199O)). Partial ligation of the left sciatic nerve is performed under isoflurane/02 inhalation anaesthesia. Following induction of anaesthesia, the left thigh of the rat is shaved and the sciatic nerve exposed at high thigh level through a small incision and is carefully cleared of surrounding connective tissues at a site near the trocanther just distal to the point at which the posteR10r biceps semitendinosus nerve branches off of the common sciatic nerve. A 7-0 silk suture is inserted into the nerve with a 3/8 curved, reversed-cutting mini-needle and tightly ligated so that the dorsal 1/3 to Vi of the nerve thickness is held within the ligature. The wound is closed with a single muscle suture (4-0 nylon (Vicryl)) and vetbond tissue glue. Following suR8ery, the wound area is dusted with antibiotic powder. Sham-treated rats undeR8o an identical suR8ical procedure except that the sciatic nerve is not manipulated. Following suR8ery, animals are weighed and placed on a warm pad until they recover from anaesthesia. Animals are then returned to their home cages until behavioral testing begins. The animal is assessed for response to noxious mechanical stimuli by determining PWT, as described below, pR10r to suR8ery (baseline), then immediately pR10r to and 1,3, and 5 hours Ar2er drug administration for rear paw of the animal. Percentage reversal of neuropathic hyperalgesia is defined as:
(FORMULA REMOVED)
In the Chung model, the spinal nerve ligation model of neuropathic pain is used to produce mechanical hyperalgesia, thermal hyperalgesia and tactile allodynia in rats. SuR8ery is performed under isoflurane/02 inhalation anaesthesia. Following induction of
anaesthesia a 3 cm incision is made and the left paraspinal muscles are separated from the spinous process at the L4 - S2 levels. The U transverse process is carefully removed with a pair of small rongeurs to identify visually the L4 - L6 spinal nerves. The left L5 (or L5 and Le) spinal nerve(s) is isolated and tightly ligated with silk thread. A complete hemostasis is confirmed and the wound is sutured using non-absorbable sutures, such as nylon sutures or stainless steel staples. Sham-treated rats undeR8o an identical suR8ical procedure except that the spinal nerve(s) is not manipulated. Following suR8ery animals are weighed, administered a subcutaneous (s.c.) injection of saline or ringers lactate, the wound area is dusted with antibiotic powder and they are kept on a warm pad until they recover from the anaesthesia. Animals are then be returned to their home cages until behavioral testing begins. The animals are assessed for response to noxious mechanical stimuli by determining PWT, as described below, pR10r to suR8ery (baseline), then immediately pR10r to and 1, 3, and 5 hours Ar2er being administered a compound of formula I for the left rear paw of the animal. The animal can also be assessed for response to noxious thermal stimuli or for tactile allodynia, as described below. The Chung model for neuropathic pain is described in S.H. Kim, “An Experimental Model for Peripheral Neuropathy Produced by Segmental Spinal Nerve Ligation in the Rat,” /tan 5O(3):355-363 (1992).
Response to Mechanical Stimuli as an Assessment of Mechanical Hyperalgesia: The paw pressure assay can be used to assess mechanical hyperalgesia. For this assay, hind paw withdrawal thresholds (PWT) to a noxious mechanical stimulus are determined using an analgesymeter (Model 7200, commercially available from Ugo Basile of Italy) as described in C. Stein, “Unilateral Inflammation of the Hindpaw in Rats as a Model of Prolonged Noxious Stimulation: Alterations in Behavior and Nociceptive Thresholds,” Pharmacol. Biochem. and Behavior 3J.:451-455 (1988). The maximum weight that can be applied to the hind paw is set at 250 g and the end point is taken as complete withdrawal of the paw. PWT is determined once for each rat at each time point and only the affected (ipsilateral) paw is tested.
Response to Thermal Stimuli as an Assessment of Thermal Hyperalgesia: The
plantar test can be used to assess thermal hyperalgesia. For this test, hind paw withdrawal latencies (PWL) to a noxious thermal stimulus are determined using a plantar test apparatus (commercially available from Ugo Basile of Italy) following the
technique described by K. HaR8reaves et ah, “A New and Sensitive Method for Measuring Thermal Nociception in Cutaneous Hyperalgesia,” Pain 32(l):77-88 (1988). The maximum exposure time is set at 32 seconds to avoid tissue damage and any directed paw withdrawal from the heat source is taken as the end point. Three latencies are determined at each time point and averaged. Only the affected (ipsilateral) paw is tested.
Assessment of Tactile Allodvnia: To assess tactile allodynia, rats are placed in clear, Plexiglas compartments with a wire mesh floor and allowed to habituate for a peR10d of at least 15 minutes. Ar2er habituation, a series of von Frey monofilaments are presented to the plantar surface of the left (operated) foot of each rat. The series of von Frey monofilaments consists of six monofilaments of increasing diameter, with the smallest diameter fiber presented first. Five trials are conducted with each filament with each trial separated by approximately 2 minutes. Each presentation lasts for a peR10d of 4-8 seconds or until a nociceptive withdrawal behavior is observed. Flinching, paw withdrawal or licking of the paw are considered nociceptive behavioral responses.
Capsaicin-induced Eye Wipe Test: To assess the effect of compounds of formula I on TRPVl receptor-mediated pain, the capsaicin-induced eye wipe test is used (N.R. Gavva et al., “AMG 9810 [(£)-3-(4-f-Butylphenyl)-iV-(2,3-dihydrobenzo[fe][l,4]dioxin-6-yl)acrylamide], a Novel Vanilloid Receptor 1 (TRPVl) Antagonist with Antihyperalgesic Properties”, J. Pharmacol. Exp. Ther. 313:474-484 (2005)). The eye wipe test is a reliable high-throughput test of the effect of TRPVl antagonists. Rats are given a single injection of 1, 3,10 or 30 mg/kg of either a compound of formula I; 30 mg/kg of a control selected from Celebrex, indomethacin or naproxen; or carrier. At 1, 3 or 5 hours Ar2er drug administration, 3 /iL of a 100 uM capsaicin solution (in 10% EtOH/PBS) is instilled in one eye of each animal with a pipette. The number of forelimb movements (touching or wiping of the capsaicin-treated eye) are counted during a 2 minute peR10d following instillation of capsaicin into the eye.
Assessments of the actions of the compounds of formula III revealed these compounds were surprisingly efficaC10us, e.g., compounds of formula III dose-dependently reduced the number of capsaicin-induced eye wipes by from about 25% to about 100% Ar2er their administration relative to the pre-administration eye wipe value.
For example, for compound Nl the number of eye wipes decreased to 1 to 3 Ar2er the administration of Nl relative to the pre-administration eye wipe value of 24. Specifically, the eye wipe value was 3 at 1 hour Ar2er the administration of Nl (87.5% decrease), 1 at 3 hours Ar2er the administration (96% decrease), and 2 at 5 hours Ar2er the administration of Nl (92% decrease).
6.3 EXAMPLE 12; BINDING OF COMPOUNDS OF FORMULA I TO TRPV1
Methods for assaying compounds capable of inhibiting TRPV1 are known in the art, for example, those methods disclosed in U.S. Patent No. 6,239,267 to Duckworth et al; U.S. Patent No. 6,406,908 to Mc Intyre et al; or U.S. Patent No. 6,335,180 to Julius et al. The results of these assays will demonstrate that compounds of formula I bind to and modulate the activity of TRPV1.
PROTOCOL 1
Human TRPV1 Clonine:
Human spinal cord RNA (commercially available from Clontech, Palo Alto, CA) is used. Reverse transcription is conducted on 1.0 ug total RNA using Thermoscript Reverse Transcriptase (commercially available from Invitrogen, Carlsbad, CA) and oligo dT primers as detailed in its product description. Reverse transcription reactions are incubated at 55°C for 1 h, heat-inactivated at 85°C for 5 min, and RNase H-treated at 37°C for 20 min.
Human TRPV1 cDNA sequence is obtained by compAr1son of the human genomic sequence, pR10r to annotation, to the published rat sequence. Intron sequences are removed and flanking exonic sequences are joined to generate the hypothetical human cDNA. Primers flanking the coding region of human TRPV1 are designed as follows: forward primer, GAAGATCTTCGCTGGTTGCACACTGGGCCACA (SEQ ID No: 1); and reverse primer, GAAGATCTTCGGGGACAGTGACGGTTGGATGT (SEQ ID No: 2).
Using these primers, PCR of TRPV1 is performed on one tenth of the Reverse transcription reaction mixture using Expand Long Template Polymerase and Expand Buffer 2 in a final volume of 50 fiL according to the manufacturer’s instructions (Roche
Applied Sciences, Indianapolis, IN). Ar2er denaturation at 94°C for 2 min PCR amplification is performed for 25 cycles at 94°C for 15 sec, 58°C for 30 sec, and 68°C for 3 min followed by a final incubation at 72°C for 7 min to complete the amplification. The PCR product of about 2.8 kb is gel-isolated using a 1.0% agarose, Tris-Acetate gel containing 1.6 ug/mL of crystal violet and purified with a S.N.A.P. UV-Free Gel Purification Kit (commercially available from Invitrogen). The TRPV1 PCR product is cloned into the pIND/V5-His-TOPO vector (commercially available from Invitrogen) according to the manufacturer’s instructions to result in the TRPVl-pIND construct. DNA preparations, restriction enzyme digestions, and preliminary DNA sequencing are performed according to standard protocols. Full-length sequencing confirms the identity of the human TRPV1.
Generation of Inducible Cell Lines:
Unless noted otherwise, cell culture reagents are purchased from Life Technologies of Rockville, MD. HEK293-EcR cells expressing the ecdysone receptor (commercially available from Invitrogen) are cultured in Growth Medium (Dulbecco’s Modified Eagles Medium containing 10% fetal bovine serum (commercially available from HYCLONE, Logan, UT), lx penicillin/streptomycin, lx glutamine, 1 mM sodium pyruvate and 400 ug/mL Zeocin (commercially available from Invitrogen)). The TRPVl-pIND constructs are transfected into the HEK293-EcR cell line using Fugene transfection reagent (commercially available from Roche Applied Sciences, Basel, Switzerland). Ar2er 48 h, cells are transferred to Selection Medium (Growth Medium containing 300 ug/mL G418 (commercially available from Invitrogen)). Approximately 3 weeks later individual Zeocin/G418 resistant colonies are isolated and expanded. To identify functional clones, multiple colonies are plated into 96-well plates and expression is induced for 48 h using Selection Medium supplemented with 5 uM ponasterone A (“PonA”) (commercially available from Invitrogen). On the day of assay, cells are loaded with Fluo-4 (a calcium-sensitive dye that is commercially available from Molecular Probes, Eugene, OR) and CAP-mediated calcium influx is measured using a Fluorescence Imaging Plate Reader (“FLIPR”) as described below. Functional clones are re-assayed, expanded, and cryopreserved.
pH-Based Assay:
Two days pR10r to performing this assay, cells are seeded on poly-D-lysine-coated 96-well clear-bottom black plates (commercially available from Becton-Dickinson) at 75,000 cells/well in growth media containing 5 uM PonA (commercially available from Invitrogen) to induce expression of TRPV1. On the day of the assay, the plates are washed with 0.2 mL lx Hank’s Balanced Salt Solution (commercially available from Life Technologies) containing 1.6 mM CaCb and 20 mM HEPES, pH 7.4 (“wash buffer”), and loaded using 0.1 mL of wash buffer containing Fluo-4 (3 uM final concentration, commercially available from Molecular Probes). Ar2er 1 h, the cells are washed twice with 0.2 mL wash buffer and resuspended in 0.05 mL lx Hank’s Balanced Salt Solution (commercially available from Life Technologies) containing 3.5 mM CaCl2 and 10 mM Citrate, pH 7.4 (“assay buffer”). Plates are then transferred to a FLIPR for assay. The test compound is diluted in assay buffer, and 50 uL of the resultant solution is added to the cell plates and the solution is monitored for two minutes. The final concentration of the test compound is adjusted to range from about 50 picoM to about 3 uM. Agonist buffer (wash buffer titrated with IN HC1 to provide a solution having a pH of 5.5 when mixed 1:1 with assay buffer) (0.1 mL) is then added to each well, and the plates are incubated for 1 additional minute. Data are collected over the entire time course and analyzed using Excel and Graph Pad Prism to determine the IC50.
Capsaicin-Based Assay:
Two days pR10r to performing this assay, cells are seeded in poly-D-lysine-coated 96-well clear-bottom black plates (50,000 cells/well) in growth media containing 5 uM PonA (commercially available from Invitrogen) to induce expression of TRPV1. On the day of the assay, the plates are washed with 0.2 mL lx Hank’s Balanced Salt Solution (commercially available from Life Technologies) containing 1 mM CaCb and 20 mM HEPES, pH 7.4, and cells are loaded using 0.1 mL of wash buffer containing Fluo-4 (3 uM final). Ar2er one hour, the cells are washed twice with 0.2 mL of wash buffer and resuspended in 0.1 mL of wash buffer. The plates are transferred to a FLIPR for assay. 50 [iL of test compound diluted with assay buffer (lx Hank’s Balanced Salt Solution containing 1 mM CaCl2 and 20 mM HEPES, pH 7.4) are added to the cell plates and incubated for 2 min. The final concentration of the compound is adjusted to range from about 50 picoM to about 3 uM. Human TRPV1 is activated by the addition of 50 fiL of
capsaicin (400 nM), and the plates are incubated for an additional 3 min. Data is collected over the entire time course and analyzed using Excel and GraphPad Prism to determine the IC50.
PROTOCOL 2
For Protocol 2, a Chinese Hamster Ovary cell line (CHO) that has been engineered to constitutively express human recombinant TRPV1 was used (TRPV1/CHO cells). The TRPV1/CHO cell line was generated as described below.
Human TRPV1 Cloning:
A cDNA for the human TRPV1 receptor (hTRPVl) was amplified by PCR (KOD-Plus DNA polymerase, T0Y0B0, Japan) from a human brain cDNA library (BioChain) using primers designed surrounding the complete hTRPVl open reading frame (forward 5’-GGATCCAGCAAGGATGAAGAAATGG (SEQ ID NO:3), and reverse 5’-TGTCTGCGTGACGTCCTCACTTCT (SEQ ID NO:4)). The resulting PCR products were purified from agarose gels using Gel Band Purification Kit (GE Healthcare Bioscience) and were subcloned into pCR-Blunt vector (Invitrogen). The cloned cDNA was fully sequenced using a fluorescent dye-terminator reagent (BigDye Terminator ver3.1 Cycle Sequencing Kit, Applied Biosystems) and ABI Prism 3100 genetic analyzer (Applied Biosystems). The pCR-Blunt vector containing the hTRPVl cDNA was subjected to restriction digestion with EcoRl. The restriction fragment was subcloned into expression vector pcDNA3.1(-) (Invitrogen) and named pcDNA3.1(-)-hVRl plasmid. The sequence of the cDNA encoding TRPV1 is available at GenBank accession number AJ277028.
Generation of the TRPV1/CHO Cell Line:
CHO-K1 cells were maintained in growth medium consisting of cc-MEM, 10% FBS (Hyclone), and 100 IU/mL of penicillin - 100 ug/mL of streptomycin mixed solution (Nacalai Tesque, Japan) at 37°C in an environment of humidified 95% air and 5% C02. The cells were transfected with the pcDNA3.1(-)-hVRl plasmid using FuGENE6 (Roche) according to the manufacturer’s protocol. 24 hr Ar2er transfection, neomycin-resistant cells were selected using 1 mg/mL G418 (Nacalai Tesque). Ar2er 2 weeks, individual colonies were picked, expanded, and screened for the expression of
hTRPVl in the capsaicin-induced Ca + influx assay (see below) with a FLIPR (Molecular Devices). A clone with the laR8est Ca2+ response to capsaicin was selected and re-cloned by the same procedure. The cells expressing hTRPVl were cultured in the growth medium supplemented with 1 mg/mL G418. Approximately 1 month later, stable expression of functional TRPV1 receptors in the selected cell line was confirmed by validating Ca2+ responses with or without capsazepine (Sigma, at 1 nM-10 uM) in capsaicin assay.
Capsaicin-induced Ca2* Influx Assay For Cell Selection:
The following assay was performed to identify cells with hTRPVl expression. CHO-K1 cells transfected with pcDNA3.1(-)-hVRl plasmid were seeded in 384-well black-wall clear-bottom plates (Corning) and cultivated in growth medium (see above) for 1 day. On the day of experiment, culture medium was exchanged to assay buffer (20 mM HEPES, 137 mM NaCl, 2.7 mM KC1, 0.9 mM MgCl2, 5.0 mM CaCl2, 5.6 mM D-glucose, 2.5 mM probenecid, pH 7.4) containing 4 fjM Fluo-3-AM (Dojin, Japan). Ar2er the incubation at 37°C for 1 hr, each well was washed 3 times with assay buffer using an EMBLA 384 plate washer (Molecular Devices) and refilled with assay buffer. The plates were incubated at a temperature of about 25°C for 10 min. Subsequently, the plates were inserted into a FLIPR, and 1.5 \iM capsaicin (Sigma) solution prepared in assay buffer was added to each well (final concentration was 500 nM). Cellular responses were monitored for 5 min.
Cell Culture:
1. Cell Culture Media
1. Alpha-MEM (Gibco, CAT: 12561-056, LOT: 1285752): 450 mL.
2. Fetal Bovine Serum (FBS), heat inactivated (Gibco, CAT: 16140-071, LOT: 1276457): 50 mL.
3. HEPES Buffer Solution, 1M stock (Gibco, CAT: 15630-08O): 10 mL (final 20 mM).
4. Geneticin, 50mg/mL stock (Gibco, CAT: 10135-035): 10 mL (final 1 mg/mL).
5. Antimicotic Antibiotic Mixed Solution, lOOx stock (Nacalai Tesque, Japan, CAT: 02892-54): 5 mL.
Components 1-5 above were combined at the indicated amounts and stored at 4°C. The cell culture media were brought to about 37°C before use. Optionally,
component 5 can be replaced by penicillin-streptomycin solution (for example, Gibco 15140-122 or Sigma P-0781).
2. Thawing the cells
TRPV1/CHO cells were frozen in Cellbanker™ (Juji-Field INC, Japan, CAT: BLC-1) and stored at -80°C. Optimized cryopreservation solution containing dimethyl sulphoxide and FBS was used.
Vials containing the TRPV1/CHO cells were stored at -80°C. Ar2er removal from -80°C, the vial was immediately transferred to a 37°C water bath to thaw for ca. 1-2 minutes. Once completely thawed, the contents of the vial (1 mL/vial) was transferred to a sterile 15 mL test tube and 9 mL warm culture media were slowly added. The test tube was subsequently centrifuged at 1000 rpm for 4 min at a temperature of about 25°C. The supernatant was removed and the pellet resuspended in 10 mL of culture media. The cell suspension was transferred to a sterile 75 cm2 plastic flask and incubated at humidified 5% C02/95% air at 37°C. To monitor viability, the cells were visually inspected and/or counted, beginning at approximately 1 hr Ar2er incubation.
3. Passaging the Cells
The cells in a flask were close to confluence at the time of passaging. Cell culture media were removed from the culture flask and 10 mL of sterile PBS(-) added and the flask gently shaken. The PBS was removed from the flask and 2 mL of trypsin/EDTA solution (0.05% trypsin with EDTA-4Na; Gibco, CAT: 25300-054) was added and the flask gently shaken. The flask was incubated at 37°C for about 2 min. 8 mL cell culture media were subsequently added to the flask and the flask shaken to ensure that all cells were in solution. The cell suspension was then transferred to a sterile 15 mL or 50 mL plastic tube, centrifuged at 1,000 rpm for 4 min at a temperature of about 25°C. The supernatant was removed and the pellet resuspended in ca. 5 mL of culture media. The cell count was measured using the Burker-Turk hemocytometer.
The cells were seeded into a sterile 75 cm2 plastic flask in ca. 0.8 x 105 cells/mL for 72 hr and incubated in humidified 5% C02/95% air at 37°C.
4. FreeZ1ng the cells
The procedure up to the measurement of the cell count was the same as in the section Passaging the Cells above. Subsequently, the cell suspension was centrifuged at 1,000 rpm for 4 min at a temperature of about 25°C. The supernatant was removed and the pellet resuspended in Cellbanker™ solution to get a final concentration of from 5 x
105 to 5 x 106 cells/mL. The cell suspension was transferred into appropriately labeled 1 mL cryovials and then placed into the -80°C freezer.
pH’Based Assay:
The following assay was conducted to determine the concentration of sulfuric acid that would give rise to a pH that induces a Ca2+ response optimal to test compounds for their effect on TRPV1.
1. Cells
TRPV1/CHO cells were seeded in the 96-well clear-bottom black-wall plate (Nunc) at densities of 1-2 x 104 cells/well and grown in 100 /JLL of culture medium (alpha-MEM supplemented with 10 % FBS, 20 mM HEPES, 1 mg/mL geneticin and 1 % antibiotic-antimycotic mixed stock solution) for 1-2 days before the experiment.
2. Determination ofpH Sensitivity and Agonist Dose
2.1. Aeonist Solution
Different agonist solutions with sulfuric acid concentrations of from 15 mM to 18 mM (see Figure 1) were prepared by diluting 1M sulfuric acid with measuring buffer. The different sulfuric acid concentrations in the agonist solutions were selected such that a 1:4 dilution would result in a final sulfuric acid concentration of between 3.0 mM to 3.6 mM, respectively, as indicated in Figure 1.
2.2. Assay
pH dependent Ca2+ responses in TRPV1/CHO cells cultured in a 96-well plate are shown in Figure 2. In particular, Ca2+ influx into TRPV1/CHO cells in response to low pH as measured by Fura-2 AM fluorescence is indicated in Figure 2. The cells were stimulated using 3.0 mM (well number B1-6), 3.1 mM(Cl-6), 3.2 mM(Dl-6), 3.3 mM (El-6), 3.4 mM (Fl-6), 3.5 mM (Gl-6), or 3.6 mM (Hl-6) H2SO4 or pH 7.2 measuring buffer without H2SO4 (Al-6) (Figure 2).
(1) Culture medium was removed using an 8-channel-pipette (Rainin, USA) from the 96-well plate and the wells were refilled with 100 /iL of loading buffer (20 mM HEPES, 115 mM NaCl, 5.4 mM KC1, 0.8 mM MgCl2,1.8 mM CaCl2, 13.8 mM D-glucose, 2.5mM probenecid, pH 7.4) containing 5 /iM Fura-2 AM (Dojin, Japan).
(2) The 96-well plate was incubated at 37°C for 45 min.
(3) The loading buffer was removed from each well. The cells were subsequently washed twice with 150 JJLL of measuring buffer (20 mM HEPES, 115 mM
NaCl, 5.4 mM KC1, 0.8 mM MgCl2, 5.0 mM CaCl2,13.8 mM D-glucose, 0.1 % BSA, pH 7.4) (no probenecid). The wells were then refilled with 80 /xL of measuring buffer.
(4) Ar2er an incubation at 4°C for 15 min, the 96-well plate was transferred to FDSS-3000 (Hamamatsu Photonics, Japan).
(5) The Fura-2 fluorescent intensity was monitored at a wavelength of 340 nm and at 380 nm, respectively, at a rate of 0.5 Hz for a total of 240 seconds. Ar2er 16 time points (32 sec) of baseline detection, 20 fiL of agonist solution was added to each well. The final volume was 100 /iL/well.
(6) Fluorescence intensity ratio refers to the fluorescence intensity at 340 nm over the fluorescence intensity at 380 nm at a particular time point. The baseline was set as the average of the fluorescent intensity ratios for the first 16 time points before the addition of agonist solution. The maximum response was the highest fluorescent intensity ratio during the 60 time points following addition of agonist solution.
(7) Maximal signal ratios from each well were calculated as output data using the FDSS-3000 analysis program. Data were analyzed using Excel (Microsoft) and XLfit (idbs) software.
2.3. pH Determination
Ar2er the observation of Ca2+ responses, the buffer of each lane (50 jiL/well, 8-20 wells/plate) was collected well by well and the pH values were measured using a portable pH meter (Shindengen, Japan).
As shown in Figure 2, the Ca2+ responses in lanes D and E were intermediate and therefore optimal for testing the effects of compounds on the TRPV1 calcium channel. The final sulfuric acid concentrations in the wells of these lanes were 3.2 mM and 3.3 mM, respectively. These final sulfuric acid concentrations were obtained using agonist solutions with 16.0 mM and 16.5 mM sulfuric acid concentrations, respectively (lanes D and E in Figure 1). The pH obtained using these sulfuric acid concentrations wasca. 5.0-5.1.
Thus, agonist solutions with 16.0 mM and 16.5 mM sulfuric acid concentrations, respectively, (lanes D and E in Figure 1) were selected for the experiments described below in section 3.
3. pH Assay 3.1. Agonist
Two different agonist solutions with different H2SO4 concentrations were used for the pH assay (Figure 3A). For one half of a 96-well plate one agonist solution was
used, for the other half the other agonist solution. The agonist solutions were obtained by diluting sulfuric acid (H2SO4, IM) with measuring buffer. The concentrations for the two agonist solutions were determined as described above in Section 2 of Protocol 2. The sulfuric acid concentrations between the two agonist solutions differed by 0.5 mM. In the experiment described in Section 2 of Protocol 2, the sulfuric acid concentrations in the agonist solutions were determined to be 16 mM and 16.5 mM, respectively. Ar2er 1:4 dilution of the agonist solutions, the final sulfuric acid concentration was 3.2 mM and 3.3 mM, respectively. The resulting pH value for the pH assay was 5.0 to 5.1.
3.2. Test Compounds
Test compounds were dissolved in DMSO to yield 1 mM stock solutions. The stock solutions were further diluted using DMSO in 1:3 serial dilution steps with 6 points (1000 fiM, 250 /*M, 62.5 fiM, 15.625 /JM, 3.9062 (M and 0.977 pM). The thereby-obtained solutions were further diluted in measuring buffer (1:10O) as lOx stock serial dilutions with a DMSO concentration of 1%. 10 uL of a lOx stock was added into each well at step 3.3.(4) of Protocol 2. Thus, the final concentrations of antagonists ranged from 1000-0.977 nM containing 0.1% DMSO (Figure 3B).
3.3. Assay
Steps (1) and (2) of this Assay were the same as steps 2.2.(1) and 2.2.(2) of Protocol 2, respectively.
(3) The cells were washed twice with 150 pL of measuring buffer (mentioned in 2.2.(3) of Protocol 2, no probenecid). The wells were subsequently refilled with 70 /iL of measuring buffer.
(4) Either 10 fiL of measuring buffer or 10 /JL of lOx stock serial dilution of test compound (described in 3.2. above) were applied to each well. Usually, only one test compound was tested per 96-well plate. The number of replicates per 96-well plate for a particular antagonist at a particular concentration was 7x2 since two different sulfuric acid concentrations were used per 96-well plate (N = 7 x 2)(Figure 3).
Step (5) was the same as 2.2.(4) above.
(6) Fura-2 fluorescent intensity was monitored as described in 2.2.(5) above. Ar2er 16 time points of baseline detection, 20 [xL of agonist solution (measuring buffer titrated with H2SO4 to yield pH 5.0 - 5.1 when mixed 1:4 with the measuring buffer containing test compound) was added to each well (final volume 100 ^L/well).
Steps (7) and (8) were as described in 2.2.(6) and 2.2.(7) above, respectively.
3.4. pH check
(1) The pH values of the buffer in the wells of Al -► HI and A7 -► H7 (longitudinally; Figure 3) were measured one by one using a portable pH meter.
(2) When a well was confirmed as pH 5.0 or 5.1, the next five wells to its right were checked one Ar2er another.
(3) For IC50 calculation, only the data from wells with pH values of 5.0-5.1 were used.
The number of wells tested for their pH vAr1ed among plates (about 16-60 wells/plate). The number depended on the results of 3.4.(1) above and the Ca2+ responses.
Cavsaicin-Based Assay:
One day pR10r to assay, TRPV1/CHO cells were seeded in 96-well clear-bottom black plates (20,000 cells/well) in growth media. On the day of the experiment, the cells were washed with 0.2 mL lx Hank’s Balanced Salt Solution (Life Technologies) containing 1.6 mM CaCl2 and 20 mM HEPES, pH 7.4 (“wash buffer”). Subsequently, the cells were loaded by incubation in 0.1 mL of wash buffer containing Fluo-4 at 3 ^M final concentration. Ar2er 1 hour, the cells were washed twice with 0.2 mL wash buffer and resuspended in 0.1 mL wash buffer. The plates were then transferred to a Fluorescence Imaging Plate Reader (Molecular Devices). Fluorescence intensity was monitored for 15 seconds to establish a baseline. Subsequently, test compounds diluted in assay buffer (lx Hank’s Balanced Salt Solution containing 1 mM CaCb and 20 mM HEPES, pH 7.4) containing 1% DMSO were added to the cell plate and fluorescence was monitored for 2 minutes. The final concentration of the compound was adjusted to range from 100 jJVI to 1.5625 \JM. If the test compound was an especially potent antagonist, the final concentration of the compound was adjusted to range from 10 ^M to 1.5625 nM. Human TRPV1 was then activated by the addition of 50 uL capsaicin (100 nM final concentration) and plates incubated for an additional 3 min. Data were collected over the entire time course and analyzed using Excel and the curve-fitting formula GraphPad Prism.
The results of the assays of Protocol 2 are shown in Table I., which demonstrates that many compounds of formula I have supeR10r potency. The IC50 data
provided in Table I. are shown as mean ± standard error of the mean; the number of trials conducted for each assay is shown in parentheses.
Table It TRPV1 ICn Potency
(TABLE REMOVED)
The invention is not to be limited in scope by the specific embodiments disclosed in the examples which are intended as illustrations of a few aspects of the invention and any embodiments that are functionally equivalent are within the scope of this invention. Indeed, vaR10us modifications of the invention in addition to those shown and described herein will become apparent to those skilled in the art and are intended to fall within the scope of the appended claims.
A number of references have been cited, the entire disclosures of which are incorporated herein by reference.







Claim set II (use claims)
1. A compound of formula I:
(FORMULA REMOVED)
or a pharmaceutically acceptable derivatives thereof, where
X is O, S, N-CN, N-OH, or N-OR10;
W is N or C;
the dashed line denotes the presence or absence of a bond, and when the dashed line denotes the presence of a bond or W is N then R4 is absent, otherwise R4 is -H, -OH, -OCF3, -halo, -(C1-C6)alkyl, -CH2OH, -CH2C1, -CH2Br, -CH2I, -CH2F, -CH(haIo)2, -CF3, -OR10, -SR10, -COOH, -COOR10, -C(O)R10-C(O)H, -OC(O)R10, -OC(O)NHR10, -NHC(O)R13, -CON(R13)2, -S(O)2R10or -NO2;
Rio is -(C1-C4)alkyl;
each R13 is independently -H, -(C1-C4)alkyl, -(C1-C4)alkenyl, -(C1-C4)alkynyl, or -phenyl;
(FORMULA REMOVED)
c is the integer O, l,or2;
Y|, Y2, Y3 are independently C, N, or 0;
wherein no more than one of Y1, Y2, or Y3 can be O, and for each Y1, Y2, and Y3 that is N, the N is bonded to one R21 group, and for each Y1, Y2, and Y3 that is C, the C is bonded to two R20 groups, provided that there are no more than a total of two (C1-C6)alkyl groups substituted on all of Y1, Y2, and Y3;
Ri2a and Ri2b are independently -H or -(C1-C6)alkyl;
E is =O, =S, =CH(C1-C5)alkyl, =CH(C1-C5)alkenyl, -NH(C1-C6)alkyl, or =N-OR20;
R, is -H, -halo, -(C,-C4)alkyl, -NO2, -CN, -OH, -OCH3, -NH2, -C(halo)3, -CH(haIo)2, -CH2(halo), -OC(halo)3( -OCH(halo)2, or -OCH2(halo);
each R2 is independently:
(a) -halo, -OH, -0(C,-C4)alkyl, -CN, -NO2. -NH2, -(C1-C10)alkyl, -(C2-
C10)alkenyl, -(C2-C]o)alkynyl,-phenyl, or
(b) a group of formula Q;
wherein Q is
(FORMULA REMOVED)
Z, is -H, -OR7, -SR7, -CH2-OR7, -CH2-SR7, -CH2-N(R2O)2, or -halo;
Z2 is -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -CH2-OR7) -phenyl, or -halo;
each Z3 is independently -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, or -phenyl;
Z4 is -H, -OH, -OR2O, -(C,-C6)alkyl, or-N(R2O)2;
J is -OR2O, -SR2O, -N(R2O)2, or -CN;
provided that at least one R2 group is a group of formula Q, and provided that when Z1 is -OR7 or -SR7, then Z2 is not -halo; each R3 is independently:
(a) -H, (C1-C6)alkyl, or CH2OR7; or
(b) two R3 groups together form a (C2-C6)bridge, which is unsubstituted
or substituted with 1,2 or 3 independently selected Rs groups, and which bridge
optionally contains -HC=CH- within the (C2-C6)bridge; or
(c) two R3 groups together form a -CH2-N(RR)-CH2- bridge, a
(FORMULA REMOVED)
Ra is selected from -H, -(CrC6)alkyl, -(C3-Cg)cycloalkyl, -CH2-C(O)-Rc, -(CH2)-C(O)-ORc, -(CH2)-C(O)-N(Rc)2, -(CH2)2-0-Rc, -(CH2)2-S(O)2-N(Rc)2, or -(CH2)2-N(Rc)S(O)2-Rc;
Rb is selected from:
(a) -H, -(C1-C6)alkyl, -(C3-Cg)cycloalkY1, -(3- to 7-
membered)heterocycle, -N(RC)2, -N(RC)-(C3-C8)cycloalkyl, or -N(Rc)-(3- to 7-
membered)heterocyde; or
(b) -phenyl, -(5- or 6-membered)heteroaryl, -N(Rc)-phenyl, or -N(Rc)-(5-
to 10-membered)heteroaryl, each of which is unsubstituted or substituted with I, 2 or 3
independently selected R7 groups;
each Rc is independently selected from -H or -(C1-C4)alkyl;
each R7 is independently -H, -(C|-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-C8)cyc]oalkyl, -(C5-Cg)cycloalkenyl, -phenyl, -(C|-C6)haloalkyl, -(C,-C6)hydroxyalkyl, -(C1-C6)alkoxy(C,-C6)alkyl, -(C1-C6)alkyl-N(R2o)2b or -CON(R2O)2;
each R8 and R9 is independently:
(a) -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-Cg)cycloalkyl, -
(C5-C8)cycloalkenyl, or -phenyl, each of which is unsubstituted or substituted with 1 or
2 -OH groups; or
(b) -H, -CH2C(haIo)3, -C(halo)3, -CH(halo)2) -CH2(halo), -OC(halo)3)
-OCH(halo)2, -OCH2(halo), -SC(halo)3, -SCH(haIo)2) -SCH2(halo), -CN, -O-CN, -OH,
-halo, -N3> -NO2> -CH=NR7, -N(R7)2, -NR7OH, -OR7> -C(O)R7, -C(O)OR7) -OC(O)R7, -OC(O)OR7, -SR7, -S(O)R7, or -S(O)2R7;
each Rn is independently -CN, -OH, -(C1-C each R14 is independently -H, -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-C8)cycloalkyl, -(C5-C8)cycloalkenyl, -(C1-C6)alkoxy-(C1-C6)alkyl, -phenyl, -C(halo)3, -CH(halo)2) -CH2(halo), -(3- to 7-membered)heterocycle, -(C1-C6)haloalkyl, -(C2-C6)haloalkenyl, -(C2-C6)haloalkynyl, -(C2-Cfi)hydroxyalkenyl, -(C2-C6)hydroxyalkynY1, -(C1-C6)alkoxy(C2-C6)alkyl, -(C1-C6)alkoxy(C2-C6)aikenY1, -(C,-C6)alkoxy(C2-C6)alkynyl, -(C1-C6)alkoxy(C3-C8)cycloaIkyl, -CN, -OH, -halo, -OC(halo)3, -N3, -NO2, -CH=NR7, -N(R7)2, -NR7OH, -OR7, -SR7, -0(CH2)bOR7, -0(CH2)bSR7, -0(CH2)bN(R7)2, -N(R7)(CH2)„OR7, -N(R7)(CH2)bSR7, -N(R7)CCH2)bN(R7)2, -N(R7)COR7, -C(O)R7, -C(O)OR7, -OC(O)R7, -OC(O)OR7, -S(O)R7, or -S(O)2R7, -S(O)2N(R7)2> -S02C(halo)3, -S02(3- to 7-rnembered)heterocycle, -CON(R7)2, -(C,-C5)alkyl-C=NOR7, -(C,-C5)alkyl-C(O)-N(R7)2, -(C,-C6)alkyl-NHS02N(R7)2, or ~(C,-C6)alkyl-C(=NH)-N(R7)2;
each R2o is independently -H, -(C|-C6)alkyl, or -(C3-Cg)cycloalkyl;
each R21 is independently -H, -(C1-C6)alkyl,
(FORMULA REMOVED)
each halo is independently -F, -CI, -Br, or -I;
n is the integer 1,2, or 3;
p is the integer 1 or 2;
each b is independently 1 or 2;
q is the integer O, 1, 2, 3 or 4;
r is the integer O,1, 2, 3, 4, 5, or 6;
s is the integer O,1, 2, 3,4, or 5;
t is the integer O,1,2, or 3; and m is the integer O,1, or 2.
2. A compound of formula II:
(FORMULA REMOVED)
or a pharmaceutically acceptable derivative thereof, wherein
X is O, S, N-CN, N-OH, or N-ORiol
W is N or C;
the dashed line denotes the presence or absence of a bond, and when the dashed line denotes the presence of a bond or W is N then R4 is absent, otherwise R4 is -H, -OH, -OCF3, -halo, -(C,-C6)alkyl, -CH2OH, -CH2C1, -CH2Br, -CH2I, -CH2F, -CH(halo)2> -CF3, -OR10. -SR1O, -COOH, -COORIO, -C(O)RlO, -C(O)H, -OC(O)R,O) -OC(O)NHR10-NHC(O)R,3, -CON(R13)2, -SCO^Rio, or -NO2;
Riois-(C1-C4)alkyl;
each R13 is independently -H, -(C|-C4)alkyl, -(C|-C4)alkenyl, -(C|-C4)alkynyl, or -phenyl;
Ari is
(FORMULA REMOVED)
c is the integer O,1, or 2;
Y|, Y2, Y3 are independently C or N;
wherein for each Y1, Y2, and Y3 that is N, the N is bonded to one R20 group, and for each Y1, Y2, and Y3 that is C, the C is bonded to two R20 groups, provided that there are no more than a total of two (C1-C6)alkyl groups substituted on all of Y1, Y2, and Y3;
Ri2a and R12b are independently -H or -(C|-C6)alkyl;
Eis =O, =S, =CH(C,-C5)alkyl, =CH(C|-C5)alkenyl, -NH(C,-C6)alkyl, or =N~ OR20;
R, is -H, -halo, -(C1-C4)alkyl, -NO2, -CN, -OH, -OCH3, -NH2, -C(halo)3, -CH(halo)2, -CH2(halo), -OC(halo)3, -OCH(halo)2, or -OCH2(halo);
each R2 is independently:
(a) -halo, -OH, -0(C,-C4)alkyl, -CN, -NO2, -NH2, -(C,-C,O)alkY1, -(C2-
C)O)alkenyl, -(C2-C10)alkynyl, -phenyl, or
(b) a group of formula Q;
wherein Q is
(FORMULA REMOVED)
Z, is -OH, -SH, -N(Rao)a, -CH2-OH, -CH2-SH, or -CH2-N(R2O)2;
Z2 is -H, -CH3, or CH2OR7 and
each Z3 is independently -H or -CH3;
Jis-OH,-SH,or-N(R2O)2;
provided that at least one R2 group is a group of formula Q;
each R3 is independently:
(a) ~H or (C]-C6)alkyl; or
(b) two R3 groups together form a (C2-C6)bridge, which is unsubstituted
or substituted with 1, 2 or 3 independently selected Rg groups, and which bridge
optionally contains -HC=CH- within the (C2-C6)bridge; or
(c) two R3 groups together fomi a -CH2-N(Ra)-CH2- bridge, a
(FORMULA REMOVED)
RR is selected from -H, -(d-C6)alkyl, -(C3-C8)cycloaIkyl, -CH2-C(O)-Rc, -(CH2)-C(O)-ORc, -(CH2)-C(O)-N(Rc)2) -(CH2)2-0-Rc, -(CH2)2-S(O)2-N(Rc)2> or -(CH2)2-N(Rc)S(O)2-Rc;
Rb is selected from:
(a) -H, -(C,-C6)alkyl, -(C3-Cg)cycloalkyl, -(3- to 7-
membered)heterocycle, -N(RC)2> -N(Rc)-(C3-Cg)cycloalkyl, or -N(Rc)-(3- to 7-
membered)heterocycle; or
(b) -phenyl, -(5- or 6-membered)heteroaryl, -N(Rc)-phenyl, or -N(Rc)-(5-
to 10-membered)heteroaryl, each of which is unsubstituted or substituted with 1, 2 or 3
independently selected R7 groups;
each Rc is independently selected from -H or -(C1-C4)alkyl;
each R7 is independently -H, -(d-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-Cg)cycloalkyl, -(C5-Cg)cycloalkenyl, -phenyl, -(C1-C6)haloalkyl, -(Cp C6)hydroxyalkyl, -(C,-C6)alkoxy(C1-C6)alkyl, -(C1-C6)alkyl-N(R2o)2, or -CON(R2O)2;
each Rg and R9 is independently:
(a) -(C1-C6)alkyl, -(C2-C6)alkenyl, -(C2-C6)alkynyl, -(C3-C8)cycloaIkyl, -(C5-C8)cycloalkenyl, or-phenyl, each of which is unsubstituted or substituted with 1 or 2 -OH groups; or
(b) -H, -CH2C(halo)3,-C(halo)3, -CH(halo)2> -CH2(halo), -OC(halo)3, -OCH(halo)2, -OCH2(halo), -SC(halo)3, -SCH(halo)2, -SCH2(halo), -CN, -O-CN, -OH, -halo, -N3, -NO2, -CH=NR7, -N(R7)2, -NR7OH, -OR7, -C(O)R7, -C(O)OR7, -OC(O)R7, -OC(O)OR7, -SR7, -S(O)R7, or -S(O)2R7;
each R11 is independently -CN, -OH, -(C1-C6)alkyl, -(C2-C6)alkenyl, -halo, -N3, -NO2, -N(R7)2, -CH=NR7, -NR7OH, -0R7, -C(O)R7, -C(O)OR7, -0C(O)R7, or -OC(O)OR7;
each R14 is independently-H, -(CpCg)alkyl, -(C2-C6)alkenyl, -(C2-Cf,)alkynyl, -(C3-C8)cycloalkyl, -(C5-C8)cycloaIkenyl, -(C1-C6)alkoxy-(C1-C6)alkyl, -phenyl, -C(halo)3) -CM(halo)2, -CH2(halo), -(3- to 7-membered)heterocycle, -(C1-C6)haloalkyl, -(C2-C6)haloalkenyl, -(CrC^haloalkynyl, -(C2-C6)hydroxyalkenyl, -(C2~ C6)hydroxyalkynyl, -(C|-C6)alkoxy(C2-C6)alkyl, -(C|-C6)alkoxy(C2-C6)alkenyl, -(d-C6)alkoxy(C2-C6)alkynyl, -(C1-C6)alkoxy(C3-C8)cycloalkyl,-CN, -OH, -halo, -OC(halo)3, -N3, -NO2, -CH=NR7, -N(R7)2, -NR7OH, -OR7, -SR7, -0(CH2)bOR7, -0(CH2)bSR7, -0(CH2)bN(R7)2, -N(R7)(CH2)„OR7, -N(R7)(CH2)bSR7, -N(R7)(CH2)bN(R7)2, -N(R7)COR7> -C(O)R7, -C(O)OR7, -OC(O)R7, -OC(O)OR7, -S(O)R7, or -S(O)2R7, -S(O)2N(R7)2) -S02C(halo)3, S02(3-to 7- membered)heterocycle, -CON(R7)2, -(C,-C5)alkyl-C=NOR7, -(C,-C5)alkyl-C(O)-N(R7)2, -(C1-C6)aIkyl-NHS02N(R7)2, or -(C,-C6)alkyl-C(=NH)-N(R7)2;
each R20 is independently -H, -(C1-C6)alkyl, or -(C3-C8)cycloalkyl;
each halo is independently -F, -CI, -Br, or -I;
n is the integer 1,2, or 3;
p is the integer 1 or 2;
each b is independently 1 or 2;
q is the integer O,1, 2, 3, or 4;
r is the integer O,1,2,3,4, 5, or 6;
s is the integer O,1,2, 3,4, or 5;
t is the integer O,1,2, or 3; and m is the integer O,1, or 2.
3. A compound of formula III:
(FORMULA REMOVED)
or a pharmaceutically acceptable salt thereof, where
X is O, S, N-CN, N-OH, or N-OR,0;
W is N or C;
the dashed line denotes the presence or absence of a bond, and when the dashed line denotes the presence of a bond or W is N then R4 is absent, otherwise R4 is -H, -OH, -OCF3, -halo, -(CrC6)alkyl, -CH2OH, -CH2C1, -CH2Br, -CH2I, -CH2F, -CH(halo)2, -CF3, -OR1O, -SR1O, -COOH, -COORIO, -C(O)R10-C(O)H, -OC(O)RlO, -OC(O)NHR)O, -NHC(O)R,3, -CON(R,3)2,-S(O)2R10or -NO2;
each R3 is independently:
(a) -H or (C1-C6)alkyl; or
(b) two R3 groups together form a (C2-C6)bridge, which is unsubstituted or substituted with 1,2 or 3 independently selected Rg gi'oups, and which bridge optionally contains -HOCH- within the (C2-C4;)bridge; or
(c) two R3 groups together form a -CH2-N(R„)-CH2- bridge, a
(FORMULA REMOVED)
R* is selected from -H, -(C1-C6)alkyl, -(C3-C8)cycloalkY1, -CH2-C(O)-RC) -(CH2)-C(O)-ORc, -(CH2)-C(O)-N(Rc)2) -(CH2)2-0-RC) -(CH2)2-S(O)2-N(Rc)2> or -(CH2h-N(Rc)S(Q)2-Rc;
Rb is selected from:
(a) -H, -(CrC6)alkyl, -(C3-C8)cycIoalkyl, -(3- to 7-
membered)heterocycle, -N(RC)2, -N(Rc)-(C3-Cg)cycIoalkyl, or -N(Rc)-(3- to 7-
membered)heterocycle; or
(b) -phenyl, -(5- or 6-membered)heteroaryl, -N(Rc)-phenyl, or -N(Rc)-(5-
to 10-membered)heteroaryl, each of which is unsubstituted or substituted with 1,2 or 3
independently selected R7 groups;
each Rc is independently selected from -H or -(C j-Chalky 1; m is the integer O,1, or 2; wherein An is:
(FORMULA REMOVED)
R, is -CI, -F, or -CF3; wherein Ar2 is:RM is -H, -CI, -F, -Br, -OCF3, -(C1-C6)alkyl, -S02CF3, -S02(C,-C6)alkyl, -OCH3, -OCH2CH3, or -OCH(CH3)2) and preferably is -CF3> -OCF3, -CI, or-F;
RM- is -H, -CI, -F, -Br, -CH3, -CH2CH3, -OCH3, -OCH(CH3)2 or -OCH2CH3; and
each Rg and R9 is independently -H, -CI, -Br, -F, -CH3, -OCH3, -OCH2CH3, -CF3, -OCF3, wo-propyl, or /er/-butyl.
4. The compound of any one of claims 1 to 3, wherein X = 0.
5. The compound according to any one of claims 1 to 4, wherein R4 is halo,
preferably F.
6. The compound according to any one of claims 1 to 4, wherein Ri for
compounds according to formula I and formula II is halo, preferably CI or F and for
compounds according to formula III R\ is halo, preferably CI or F, or CF3.
7. The compound according to any one of claims 1 to 6, wherein W is C and
the dashed line is absent.
8. The compound according to any one of claims 1 to 6, wherein W is C,
and the dashed line is a double bond.
9. The compound according to any one of claims I to 6, wherein W is N, R4
is absent and the dashed line is absent.
10. A compound according to any one of claims 1,2, and 4 to 9, wherein Ari
(FORMULA REMOVED)
and for compounds according to formula II n is preferably 3.
11. A compound according to any one of claims 1 and 4 to 1O, wherein for
compounds according to formula I the Q-group is selected from
(FORMULA REMOVED)
A compound according to any one of claims 1 and 4 to 11, wherein for compounds according to formula I n is 1, and Q is selected from
(FORMULA REMOVED)
13. The compound according to any one of claims 1,2 and 4 to 12, wherein for compounds according to formula I and II J is selected from OR20 or -N(R.2o)2, and preferably is OR20 and more preferably is OH.
14. The compound of any one of claims 1,2 and 4 to 13, wherein for compounds according to formula IR20 is selected from H or -(C1-C6)alkyl, and preferably is H.
15. The compound according to any one of claims 1 and 4 to 14, wherein for compounds according to formula IZ3 is independently selected from H or (C1-Q$)alkyl, and preferably is H.
16. The compound according to any one of claims 1 and 4 to 15, wherein for compounds according to formula I Zj is H or -CH2OR7, and preferably is H,
17. The compound according to any one of claims 1 and 4 to 16, wherein for compounds according to formula I Z2 is selected from H, -(C]-Co)alkY1, or -CH2OR7, and preferably is H.
18. The compound according to any one of claims 1 to 17, wherein forcompounds according to formula I or formula II Ar2 is
(FORMULA REMOVED)
19. The compound according to any one of claims 1,2, and 14 to 17, wherein
for compounds according to formula I or formula II Ar2 is
(FORMULA REMOVED)
and wherein for compounds according to formula I RM is preferably independently selected from halo, C(halo)3, -(C1-C6)alkyl, OR7, OC(halo)3, or S02C(halo)3, and for compounds according to formula II R14 is independently selected from H, halo, C(halo)3, -(C,-C6)alkyl, OR7, OC(halo)3 or S02C(halo)3; and more preferably is halo, C(halo)3, or OC(ha!o)3.
20. The compound according to any one of claims 1, 2, and 4 to 19, wherein for compounds according to formula I or formula II halo is F or CI.
21. The compound according to any one of claims 1, 2, and 4 to 2O, wherein for compounds according to formula I or formula II s or q is 1 or 2.
22. The compound according to any one of claims 1,2, and 4 to 17, wherein
for compounds according to formula I or formula II Ar2 is
(FORMULA REMOVED)
and wherein Rs and R9 are preferably independently selected from H, halo and -(C1-C6)alkyl, and more preferably are H or halo, wherein halo is CI or F.
23. The compound according to any one of claims 2, 4 to 9 and 13, wherein for compounds according to formula II Zi is H, OR7, or CH2OR7, and preferably is OR7, wherein R7 is preferably H or (C1-C6)alkyl.
24. The compound according to any one of claims 2,4 to 9 and 13, wherein for compounds according to formula II Z\ is OH or CH2OH.
25. The compound according to any one of claims 1, 2,4 to 21,23 and 24, wherein for compounds according to formula I and formula II Ar2 is 2-pyridyl or phenyl, s or q is 1 and the RH substituent is in the 4-position of the Aivsubstituent.
26. The compound according to any one of claims 1,2,4 to 21,23 and 24, wherein for compounds according to formula I and formula II Ar2 is 2-pyridyl or phenyl, s or q is 2 and the Ru substituent is in the 3- and 4-position of the Ar2-substituent,
27. The compound according to any one of claims 2, 4 to 1O,13, and 18 to 26, wherein for compounds according to formula II Ri is CI, Z2 is H, and Z3 is H.
28. The compound according to any one of claims 2, 4 to 1O,13, and 18 to 26, wherein for compounds according to formula II Ri is CI, R4 is F, Z2 is H, and Z3 is H.
29. The compound according to any one of the preceding claims, wherein m = 0.
30. The compound according to any one of claims 1 to 28, wherein m = 1 and preferably R3 is (C|-C6)alkyl and more preferably is -CH3 or -CH2CH3.
31. The compound according to any one of claims 3 to 9 and 29 and 3O, wherein for compounds according to formula III Ar2 is selected from
(FORMULA REMOVED)
32. The compound according to any one of claims 3 to 9 and 29 to 31,
wherein Ai-2 is
(FORMULA REMOVED)
wherein R,4 is selected from -H, -CI, -F, -Br, -OCF3, -(C1-C6)alkyl, S02CF3! S02(C,-C6)alkyl, -OCH3, -OCH2CH3, -OCH(CH3)2, and preferably is -CF3, -OCF3, -CI, or -F; or
(FORMULA REMOVED)
wherein RM. is selected from -H, -CI, -F, -Br, -OCF3, -(C|-C6)alkyl, S02CF3, S02(C|-C6)alkyl, -OCH3s -OCH2CH3, -OCH(CH3)2, and preferably is -CF3,-OCF3, -OCH3, -OCH2CH3,-Cl,or-F;or
(FORMULA REMOVED)
wherein R,4. is selected from -H, -CI, -F, -Br, -OCF3, -(C1-C6)alkyl, S02CF3, S02(C,-C6)alkyl, -OCH3, -OCH2CH3, -OCH(CH3)2, and preferably is -CF3, -OCF3, OCH3, OCH2CH3,-Cl,or-F;or
(FORMULA REMOVED)
wherein each R8 and R9 is independently -H, -CI, -Br, -F, -CH3, -OCH3, -OCH2CH3, -CF3, -OCF3, iso-propyl, or tert-bulyl
33. The compound according to any one of claims 3 to 9 and 29 to 32,
wherein for compounds according to formula III the chiral carbon atom of the Q-group has the (S)-configuration:
(FORMULA REMOVED)
wherein for compounds according to formula III the chiral carbon atom of the Q-group has the (R)-configuration:
(FORMULA REMOVED)
34. The compound of claim 2, wherein
a) W is C, X is O, Z| is -OH and J is -OH,
b) W is C, X is O, Z, is -CH2OH and J is -OH,
c) W is C, wherein the dashed line is a double bond, X is O, Zi is -OH, J is -OH, Ri is -halo, and An is
d) W is C, the dashed line is a double bond, X is O, Zi is -CH2OH, J is -OH, Ri
is -halo, and Ari is
(FORMULA REMOVED)
e) W is C, X is O, Zi is -OH, J is -OH, Ri is -halo, R4 is -halo, and Ari is
(FORMULA REMOVED)
f) W is C, X is O, Z, is -CHjOH, J is -OH, Ri is -halo, R4 is -halo, and Ari is
(FORMULA REMOVED)
g) W is C, wherein the dashed line is a double bond, X is O, Z\ is -OH, J is -OH,
Ri is -halo, Ari is
(FORMULA REMOVED)
and Ar2 is
(FORMULA REMOVED)
h) W is C, the dashed line is a double bond, X is O, Z is -CH2OH, J is -OH, Ri is -halo, Ari is
(FORMULA REMOVED)
and Ar2 is
(FORMULA REMOVED)
i) W is C, X is O, Zi is -OH, J is -OH, R\ is -halo, R4 is -halo, Ari is
(FORMULA REMOVED)
and Ai'2 is
(FORMULA REMOVED)
j) W is C, X is O, Z) is -CH3OH, J is -OH, R, is -halo, R4 is -halo, Ar, is
(FORMULA REMOVED)
and Ai-2 is
(FORMULA REMOVED)
k) W is C, the dashed line is a double bond, X is O, Z) is -OH, J is -OH, Ri is -halo, Ari is
(FORMULA REMOVED)
and Ar2 is
(FORMULA REMOVED)
W is C, the dashed line is a double bond, X is O, Z\ is -CH2OH, J is -OH, Ri is -halo, An is
(FORMULA REMOVED)
and Ai-2 ism) W is C, X is O, Z\ is -OH, J is -OH, Rj is -halo, R4 is -halo, An is
(FORMULA REMOVED)
and Ai-2 is
(FORMULA REMOVED)
n) W is C, X is O, Z\ is -CH2OH, J is -OH, R, is -halo, R4 is -halo, Arj is
(FORMULA REMOVED)
and Ar2 is

(FORMULA REMOVED)
35. The compound of claim 34, wherein the compound is a compound of
alternative g), h), k) or 1) wherein Ri is -CI, Zi is -H, and Z3 is -H.
36. The compound of claim 34, wherein the compound is a compound of alternative i), j), m), or n), wherein Ri is -CI, R» is -F, Z2 is -H, and Z3 is -H.
37. A compound of any one of the preceding claims, wherein the pharmaceutically acceptable derivative is a pharmaceutically acceptable salt.
38. A composition comprising a compound of any one of claims 1 to 37 or a
pharmaceutically acceptable derivative thereof and a pharmaceutically acceptable carrier
or excipient.
39. A method of inhibiting TRPV1 function in a cell comprising contacting a
cell capable of expressing TRPV 1 with an effective amount of a compound of any one
of claims 1 to 37 or a pharmaceutically acceptable derivative thereof.
40. A use of a compound according to any one of claims 1 to 37 or a pharmaceutically acceptable derivative thereof in the production of a medicament for the treatment or prevention of pain, UI, an ulcer, IBD, or IBS in an animal.
41. A compound according to any one of claims 1 to 37 for use as a medicament.

Documents:

http://ipindiaonline.gov.in/patentsearch/GrantedSearch/viewdoc.aspx?id=XIpyFj05nQwm6qRnNNH15g==&loc=+mN2fYxnTC4l0fUd8W4CAA==


Patent Number 279905
Indian Patent Application Number 6544/DELNP/2009
PG Journal Number 05/2017
Publication Date 03-Feb-2017
Grant Date 02-Feb-2017
Date of Filing 13-Oct-2009
Name of Patentee PURDUE PHARMA L.P.
Applicant Address ONE STAMFORD FORUM 201, TRESSER BOULEVARD, STAMFORD, CT 06901 USA.
Inventors:
# Inventor's Name Inventor's Address
1 KUROSE NORIYUKI C/O SHIONOGI & CO., LTD., 12-4, SAGISU 5-CHOME, FUKUSHIMA-KU, FUKUSHIMA-KU, OSAKA-SHI, OSAKA553-0002 JAPAN.
2 TAFESSE LAYKEA 11 ABBINGTON LANE, ROBBINSVILLE, NJ 08691 USA.
PCT International Classification Number C07D 401/04
PCT International Application Number PCT/IB2008/001069
PCT International Filing date 2008-04-25
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 60/930,036 2007-05-11 U.S.A.
2 60/926,661 2007-04-27 U.S.A.
3 60/962,409 2007-07-27 U.S.A.
4 60/937,003 2007-06-21 U.S.A.