Process for the preparation of 2'-deoxy-5-trifluoromethyl-beta-uridine
申请人:YUKI GOSEI KOGYO CO., LTD.
公开号:EP0389110A2
公开(公告)日:1990-09-26
The present invention is a process for the preparation of 2′-deoxy-5-trifluoromethyl-β-uridine characterized in that a 5-trifluoromethyyl-2,4-bis(triorganosilyloxy)pyrimidine and a 1-halogeno-2-deoxy-alpha-D-erythro-pentofuranose derivative are subjected to a condensation reaction to give a 1-(2-deoxy-β-D-erythro-pentofuranosyl)-5-trifluoromethyluracil derivative which is then subjected to a deprotection reaction to give 2′-deoxy-5-trifluoromethyl-β-uridine.
Synthesis of Trifluorothymidine: Green Glycosylation Condition Using Neither Chloroform nor Transition Metals
作者:Hironori Komatsu、Hideki Umetani
DOI:10.1021/op025555o
日期:2002.11.1
A new green glycosylation condition useful for efficient large-scale preparation of trifluorothymidine 1 is described. The condition requires neither CHCl3 nor transition-metal catalysts for β-selectivity at the anomeric C1-position, which is advantageous for process development of active pharmaceutical ingredients such as 1. Key features of the condition include: (1) only an equimolar amount of trifluorothymine