FUSED HETEROAROMATIC CYCLOPENTENE DERIVATIVE HAVING ENDOTHELIN-ANTAGONIST ACTIVITY

摘要

A cyclopentene derivative represented by general formula (I) and a pharmaceutically acceptable salt thereof: wherein Ar<1> and Ar<2> represent each independently phenyl, thienyl, pyridyl, indolyl, benzofuranyl or dihydrobenzofuranyl; A represents a group that is combined with the adjacent carbon-carbon double bond to form a 5-or 6-membered heteroaromatic ring containing one to four heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur; and Y represents -CO-R<4>, SO3H, PO3H2, tetrazol-5-yl, 2-oxo-3H-1,2,3,5-oxathiadiazol-4-yl or 5-oxo-4H-1,2,4-oxadiazol-3-yl. <CHEM>