(-)-Paroxetine hydrochloride was produced asymmetrically in seven steps starting from 4-fluoro benzaldehyde. The stereocenter at C-4 was initially set through desymmetrization of glutaric acid bis methyl ester 4 by PLE hydrolysis. A unique one-pot reduction-alkylation procedure was then developed to provide entry to lactam 2 with the appropriate absolute stereochemistry. (C) 2000 Elsevier Science Ltd. All rights reserved.
(-)-Paroxetine盐酸盐是通过七步反应以4-
氟苯甲醛为起始原料不对称合成的。C-4位的手性中心最初是通过5-羟基脯
氨酸酯(glutaric acid bis methyl ester)的PLE
水解消除对称性而设置的。随后,开发了一种独特的单锅还原-烷基化步骤,以获得具有适当绝对构型的内酰胺2。©2000 Elsevier Science Ltd. 保留所有权利。