| abstract |
Circulation-active dihydropyridines of the formula <IMAGE> in which R1 is optionally substituted aryl or heterocyclic, R2 is H, NO2, CN, C1-C8-alkylsulphonyl, aryl or carboalkoxy, R3 is alkyl or aryl, R4 is H or alkyl, X is C=O or a direct bond, and n is a number from 1 to 20, or physiologically acceptable salts thereof. A synthesis using morpholines or thiomorpholines is also disclosed. |