| 摘要 |
The invention relates to compounds of the formula: and the pharmaceutically acceptable salts and hydrates thereof wherein R1 and R2 are the same or different and each is selected from hydrogen,halo, C1-C4 alkyl, C1-C4 alkoxy or trifluoromethyl; R3 is selected from straight or branched chain (a) alkyl of from about 1 to 15 carbon atoms or (b) alkenyl of from about 2 to 15 carbon atoms; R4 is selected from hydrogen or C1-C4 alkyl; R5 is a bicyclic group selected from or wherein R6 and R7 are the same as defined above for R1 and R2; and n is an integer from 2 to 4, inclusive; which are useful as cardiovascular agents. |
