作者:Iwao Chujo、Yoshiaki Masuda、Kenji Fujino、Sachiko Kato、Takehiro Ogasa、Shin-ichiro Mohri、Masaji Kasai
DOI:10.1016/s0968-0896(01)00238-3
日期:2001.12
new synthetic routes to 6,7-dihydro-10-fluoro-3-(2-fluorophenyl)-5H- benzo[6,7]cyclohepta[1,2-b]-quinoline-8-carboxylic acid (1), a novel immunosuppressant KF20444, are described. The seven-membered ring construction from 2-[4-(2-fluorophenyl)phenyl]-3-(2-carboxyethyl)-4-chloromethyl-6-fluoroquinoline (17c) was achieved by intramolecular Friedel-Crafts reaction under acidic conditions as the key step
合成6,7-二氢-10-氟-3-(2-氟苯基)-5H-苯并[6,7]环庚[1,2-b]-喹啉-8-羧酸的两种新合成路线(1)描述了新型免疫抑制剂KF20444。由2- [4-(2-氟苯基)苯基] -3-(2-羧乙基)-4-氯甲基-6-氟喹啉(17c)在酸性条件下通过分子内Friedel-Crafts反应获得七元环结构。关键步骤。随后,氧化4-氯甲基,然后还原七元环上的羰基,得到1。该路线提供了一种合成1的新方法。