| abstract |
Dihydropyridine derivatives and acid addition salts thereof which are of use as prophylactic or/and therapeutic drugs for cardiovascular diseases, said dihydropyridine derivatives having the formula ##STR1## wherein R 1 is a hydrogen atom or an aryl, n R 2 and R 3 are the same or different and each is an aryl, n R 4 and R 6 are the same or different and each is a lower alkyl, n R 5 is amino or a lower alkyl, n A is an alkylene, n X is N or CH and n m and n are the same or different n and each is 0 or 1, n with the proviso that when X is N, R 5 is amino. |