| Abstract |
Compounds represented by general formula (I), in which R<sub>1</sub>, R<sub>2</sub>, R<sub>3</sub> each other independently selected from H, OH, F, Cl, Br, methoxy and ethoxy; alterative R<sub>1 </sub>and R<sub>2</sub> forms -OCH<sub>2</sub>O- together,R<sub>3</sub> selected from H, OH, methoxy, ethoxy and halo; R<sub>4</sub> selected from OH or acyloxy; R<sub>5</sub> selected from cycloalkoxy, amino, and substituted amino, and when R<sub>5</sub> represents amino, R<sub>1</sub>, R<sub>2</sub>, R<sub>3</sub> don"t represent H at same time. A process for preparing compounds represented by general formula (I) and usage thereof for preventing and treating cardiovascular and cerebrovascular diseases. |