6-(BENZOD1,3DIOXOL-5-YL)-2-SUBSTITUTED-2,3,12,12A-TETRAHYDROPYRAZINO1',2':1,6PYRIDO3,4-BINDOLE-1,4(6H,7H)-DIONE DERIVATIVES AS PHOSPHODIESTERASE TYPE-5 INHIBITORS

摘要

Disclosed are a compound represented by general formula (I) as a phosphodiesterase type-5 inhibitor or pharmaceutically acceptable salt thereof and use thereof in treating and/or preventing diseases or disease states related to the phosphodiesterase type-5 in mammals.