Syntheses and .BETA.-adrenergic blocking activities of the optical isomers of 8-acetonyloxyl-5-(3-(3,4-dimethoxyphenethylamino)-2-hydroxypropoxy)-3,4-dihydrocarbostyril.
作者:EIYU YO、KAZUYUKI NAKAGAWA、YO HOSHINO
DOI:10.1248/cpb.29.2157
日期:——
The optical isomers of 8-acetonlloxy-5-[3-(3, 4-dimethoxyphenethylamino)-2-hydroxypropoxy]-3, 4-dihydrocarbostyril were prepared from the optically active epichlorhydrin, and their β-adrenergic blocking activities were examined. The (S) (-)-isomer was shown to be about 200 times more potent on atrial and 100 times more potent on tracheal preparations, and was also about 3 times more β1-selective than the (R) (+)-isomer.
8-乙酰氧基-5-[3-(3,4-二甲氧基苯乙胺基)-2-羟基丙氧基]-3,4-二氢苯并噻吩的光学异构体由光学活性环氧氯丙烷制备,并对其β-肾上腺素受体阻断活性进行了检测。实验表明,(S) (-)-异构体对心房和气管制剂的效力分别高出约200倍和100倍,且对β1的选择性比(R) (+)-异构体高出约3倍。