[EN] AN IMPROVED AND COMMERCIALLY VIABLE PROCESS FOR PREPARATION OF PYRROLE DERIVATIVES WITH IMPROVED IMPURITY PROFILE & MINIMISATION OF UNIT OPERATIONS.<br/>[FR] PROCÉDÉ AMÉLIORÉ ET VIABLE SUR LE PLAN COMMERCIAL POUR LA PRÉPARATION DE DÉRIVÉS DE PYRROLE AYANT UN PROFIL D'IMPURETÉS AMÉLIORÉ EN VUE D'UNE RÉDUCTION AU MINIMUM D'OPÉRATIONS UNITAIRES
申请人:ARCH PHARMALABS LTD
公开号:WO2020016903A1
公开(公告)日:2020-01-23
The present invention relates to improved process for the preparation of a pyrrole derivative as a racemic mixture, an enantiomer, a diastereoisomer, a mixture thereof, a tautomer thereof or a pharmaceutically acceptable salt and hydrates thereof and also intermediates involved therein. Particularly invention is directed to improved processes for the preparation of pyrrole derivatives such as (4R,cis)-6-[2-[3-phenyl-4-(phenyl-carbamoyl)-2-(4-fluorophenyl)-5-(1-methyl-ethyl)-pyrrole-1-yl]-2,2-dimethyl-[1,3]dioxane-4-yl-acetic acid-tertiary butyl ester of formula IV followed by its conversion into [R-(R*, R*]-2-(4-fluorophenyl)- β,δ-dihydroxy-5-(1-methylethyl)-3-phenyl-4-[(phenylamino)carbonyl]-1H-pyrrole-1- heptanoic acid particularly calcium salt and its hydrate represented by Formulae I/IA respectively wherein formation of the impurities is either eliminated or minimized in the corresponding intermediaries.
本发明涉及改进的过程,用于制备吡咯衍生物的混合物,对映体,非对映异构体,其混合物,其互变异构体或其药学上可接受的盐和水合物,以及涉及其中间体。特别是本发明涉及改进的过程,用于制备吡咯衍生物,如公式IV的(4R,顺式)-6- [2- [3-苯基-4-(苯基-氨基甲酰)-2-(4-氟苯基)-5-(1-甲基乙基)-吡咯-1-基] -2,2-二甲基-[1,3]二氧杂环-4-基乙酸叔丁酯,然后将其转化为[R-(R *,R *] -2-(4-氟苯基)-β,δ-二羟基-5-(1-甲基乙基)-3-苯基-4-[(苯氨基)甲酰]-1H-吡咯-1-庚酸,特别是钙盐及其水合物,分别由公式I / IA表示,其中在相应的中间体中消除或最小化杂质的形成。