| abstract |
Compounds having the formulan and pharmaceutically acceptable salts thereof whereinn X is H, C 1 -C 6 alkyl, CN, halo, SR or -OR wherein R is C 1 -C 6 alkyl, X' is H, C 1 -C 6 alkyl, CN, halo, SR 1 or OR' wherein R' is C 1 -C 6 alkyl, Y is H, halo, C 1 -C 6 alkyl, CN, CF 3 , NO 2 , COOC 1 -C 6 alkyl, NR 2 R 3 wherein R 2 and R 3 are H or C 1 -C 6 alkyl, SR 4 , SOR4, SO 2 R 4 or OR 4 wherein R 4 is C 1 -Ch alkyl and Y' is H, halo, C 1 -C 6 alkyl, CN, CF 3 , N0 2 , COOC,-C 6 alkyl, NR 2 R 3 wherein R 2 and R 3 are H or C 1 -C 6 alkyl, SOR4, SO 2 R 4 or OR 4 wherein R 4 is C,-C 6 alkyl. n The compounds are useful as antihypertensive agents. |