Syntheses of the optical isomers of befunololHCl and their .BETA.-adrenergic blocking activities.
作者:JUN NAKANO、MITSUO MIMURA、MITSUO HAYASHIDA、MASAHIRO FUJII、KAZUHIKO KIMURA、TERUO NAKANISHI
DOI:10.1248/cpb.36.1399
日期:——
The optical isomers of 2-acetyl-7-(2-hydroxy-3-isopropylaminopropoxy)benzofuran hydrochloride (1a, b) (befunolol·HCl) were synthesized by using (S)-1, 2-O-isopropylideneglycerol (4) as a common chiral building block, and their β-adrenergic blocking activities were examined. The (S)-(-)-isomer 1b was about 300 times more potent than the (R)-(+)-isomer 1a on an atrial preparation.
2-乙酰基-7-(2-羟基-3-异丙胺基丙氧基)苯并呋喃盐酸盐(1a, b)的光学异构体(盐酸倍他洛尔)以(S)-1,2-O-异亚丙基甘油醇(4)作为共同的立体异构构建模块进行合成,并检测了其β-肾上腺素能阻断活性。在心房组织中,(S)-(-)-异构体1b的活性约为(R)-(+)-异构体1a的300倍。