New hydrazino and hydroxyamino-14beta-hydroxyandrostane derivatives active on the cardio-vascular system, processes for their preparation and pharmaceutical compositions containing same

摘要

Hydrazino and hydroxyamino- 14β-hydroxyandrostane derivatives having general formula (I): wherein the symbol means α or β configuration and A, B, R¹, R², R³ and R⁴ have the manings given in the description;a process for producing same and their use for the preparation of a medicament for the treatment of cardiovascular disorder such as heart failure and hypertension are disclosed.