[EN] PROCESS FOR PREPARATION OF TELMISARTAN<br/>[FR] PROCÉDÉ D'ÉLABORATION DE TELMISARTAN
申请人:ZAKLADY FARM POLPHARMA SA
公开号:WO2009123483A1
公开(公告)日:2009-10-08
A process for preparation of telmisartan comprises: (i) oxidation of compound of formula (a), wherein R2 is a hydrogen atom or a substituent of formula (b), in which R1 is a protecting group for the carboxyl function, to an aldehyde of formula (c), in which R2 is defined as in the formula (a), and, optionally, (ii) in case R2 in the compound (c) thus obtained is a hydrogen atom, iV-alkylation of the compound (c) with a biphenyl derivative, (iii) treatment of the compound (c) thus obtained with N- methyl- o-nitroaniline in a cyclocondensation reaction, and (iv) cleavage of the protecting group R1.
一种制备缬沙坦的方法包括:(i)氧化式为(a)的化合物,其中R2是氢原子或式为(b)的取代基,其中R1是羧基的保护基,得到式为(c)的醛,其中R2如式(a)中定义,并且,可选地,(ii)如果化合物(c)中的R2是氢原子,则用联苯衍生物对化合物(c)进行烷基化,(iii)用N-甲基-邻硝基苯胺对得到的化合物(c)进行环缩合反应处理,以及(iv)去除保护基R1。