1,4-Dihydropyridine derivatives useful in the treatment of cardiovascular disorders, and a process for producing the derivatives.

摘要

The present invention relates to novel 1,4-dihydropyridine derivatives of the following formulae. <CHEM> The compounds have activity as calcium antagonists useful for the treatment of cardiovascular disorders. More particularly, the invention includes preferred compounds which in addition to the usefulness associated with calcium antagonism also exhibit positive inotropic effect without the usual accompanying negative inotropic effect. Thus, the preferred compounds additionally provide beneficial increased myocardial activity.