Cyclic compounds and their use

摘要

The present invention relates to a compounds represented by the following formula or salts thereof. ensin II antagonistic action, antihypertensive action and action on central nervous system, which are useful for the treatment of circulatory diseases such as hypertension, heart diseases, cerebral apoplexy, nephritis, atherosclerosis or Alzheimer's disease and senile dementia, and for agents of improving cerebral function.