New 2-substituted-3(2H)-isoquinolones and 2-substituted-3-alkoxyisoquinolines are disclosed. They are orally active hypotensives and peripheral vasodilators with an extended duration of action. Representative embodiments of this invention are 6,7-dimethoxy-2-methyl-1-veratryl-3(2H)-isoquinolone hydrochloride, 2-allyl-6,7-dimethoxy-2-veratryl-3(2H)-isoquinolone hydrochloride, 2-cyclopropyl-6,7-dimethoxy-1-3(2H)-isoquinolone hydrochloride, 2-amino-6,7-dimethoxy-1-veratryl-3(2H)-isoquinolone hydrochloride and 3-ethoxy-6,7-dimethoxy-1-veratrylisoquinoline.
本发明揭示了新的2-取代-3(2H)-
异喹啉酮和2-取代-3-烷氧基
异喹啉酮。它们是口服活性降压药和外周血管扩张剂,具有延长作用时间。该发明的代表性实施例包括6,7-二甲氧基-2-甲基-1-维拉特里尔-3(2H)-
异喹啉酮盐酸盐,2-烯丙基-6,7-二甲氧基-2-维拉特里尔基-3(2H)-
异喹啉酮盐酸盐,2-环丙基-6,7-二甲氧基-1-3(2H)-
异喹啉酮盐酸盐,2-
氨基-6,7-二甲氧基-1-维拉特里尔基-3(2H)-
异喹啉酮盐酸盐和3-乙氧基-6,7-二甲氧基-1-维拉特里尔
异喹啉酮。