[EN] USE OF INTERMEDIATES ((R ) -2,2, 4-TRIMETHYL-L, 3-DIOXOLANE-4-YL) METHANOL (A), 3-F LUORO-4-NITRO-PHENOL (B) AND 1- (4-CHLORO- BENZYL) -PIPERIDIN-4-YLAMINE (C)<br/>[FR] UTILISATION D'INTERMÉDIAIRES ((R)-2,2,4-TRIMÉTHYL-L, 3-DIOXOLANE-4-YL)MÉTHANOL (A), 3-F LUORO-4-NITRO-PHÉNOL (B) ET 1-(4-CHLORO-BENZYL) -PIPÉRIDIN-4-YLAMINE (C)
申请人:ASTRAZENECA AB
公开号:WO2009035407A1
公开(公告)日:2009-03-19
The present invention relates to novel processes for the preparation of intermediate compounds which can be used to prepare therapeutic agents. The present invention also relates to novel intermediate compounds which can be used to prepare therapeutic agents. More specifically, the invention relates to the use of intermediates ((R) -2,2,4-trimethyl-l, 3- dioxolane-4 -yl) methanol (A), 3-f luoro-4-nitro-phenol (B) and 1- (4-chloro-benZyl) -piperidin-4-ylamine (C).
Development of a Multikilogram Synthesis of a Chiral Epoxide Precursor to a CCR1 Antagonist. Use of in Situ Monitoring for Informed Optimisation via Fragile Intermediates
作者:Debra Ainge、James E. M. Booker、Nicholas Pedge、Rhona Sinclair、Chris Sleigh、Marijan Štefinović、Luis-Manuel Vaz、Edward Way
DOI:10.1021/op900172t
日期:2010.1.15
up of a manufacturing route to a key intermediate, aceticacid 4-acetylamino-3-(2-methyl-oxiranylmethoxy)phenyl ester (2), utilising a SNAr coupling, the hydrogenation of a nitro moiety and the conversion of a chiral acetonide into a chiral epoxide is described along with other routes to access intermediate 2 including the chemoselective reduction of a nitro moiety in the presence of an epoxide.
利用S N Ar偶合,硝基部分的加氢和乙酸的最优化和规模化生产关键中间体乙酸4-乙酰氨基-3-(2-甲基-环氧乙烷基甲氧基)苯基酯(2)的方法。描述了手性丙酮化物向手性环氧化物的转化以及进入中间体2的其他途径,包括在环氧化物的存在下硝基部分的化学选择性还原。