Many 5-(3-amino-2-hydroxypropoxy)-8-alkoxy and acyloxy-3, 4-dihydrocarbostyrils and 5-(3-amino-2-hydroxypropoxy)-8-alkoxycarbostyrils were synthesized from 5, 8-dihydroxy-3, 4-dihydrocarbostyril, and their β-adrenergic blocking activities were examincd. Among them, 8-acetonyloxy-5-[3-(3, 4-dimethoxyphenethylamino)-2-hydroxypropoxy]-3, 4-dihydrocarbostyril hydrochloride hydrate (IVh) was found to have potent β1-selective adrenergic blocking activity.
许多5-(3-
氨基-2-羟基丙氧基)-8-烷氧基和酰氧基-3,4-二氢羰基苯并
吡喃和5-(3-
氨基-2-羟基丙氧基)-8-烷氧基羰基苯并
吡喃是由5,8-二羟基-3,4-二氢羰基苯并
吡喃合成的,并对其β-
肾上腺素阻断活性进行了研究。其中,8-乙酰氧基-5-[3-(
3,4-二甲氧基苯乙胺基)-2-羟基丙氧基]-3,4-二氢羰基苯并
吡喃盐酸盐
水合物(IVh)被证明具有强效的β1选择性
肾上腺素阻断活性。