[EN] AN IMPROVED PROCESS FOR THE PREPARATION OF ELIGLUSTAT AND ITS INTERMEDIATE<br/>[FR] PROCÉDÉ AMÉLIORÉ POUR LA PRÉPARATION D'ÉLIGLUSTAT ET DE SON INTERMÉDIAIRE
申请人:PIRAMAL ENTPR LTD
公开号:WO2020194138A1
公开(公告)日:2020-10-01
The present invention relates to an improved process for the preparation of N-((1R,2R)-1-(2,3- dihydrobenzo[b][1,4]dioxin-6-yl)-1-hydroxy-3-(pyrrolidin-1-yl)propan-2-yl)octanamide (A), which is known as ELIGLUSTAT and its pharmaceutically acceptable salts, comprising the formation of novel intermediate metal complex (III), which on hydrolysis in presence of acid provides amine compound (IV) (as described herein), which is treated with pyrrolidine and subsequently reduced to convert into Eliglustat (A).
The isoquinoline 17 and the tetrahydroisoquinoline 16 were synthesized from 2,3-dihydro-1,4-benzodioxin (1) by different synthetic strategies. Preparation of arylethylamines and their cyclization in Bischler–Napieralski conditions have been studied. Another approach to isoquinolines was based on the amination of the ketone 13 followed by cyclization in acidic media. The route via the amide 15 was found
Fragment evolution for GPCRs: the role of secondary binding sites in optimization
作者:Florent Chevillard、Ádám Kelemen、Jillian G. Baker、Vivien A. Aranyodi、Frank Balzer、Peter Kolb、György M. Keserű
DOI:10.1039/d1cc04636e
日期:——
We developed a docking-based fragment evolution approach that extends orthosteric fragments towards a less conserved secondary binding pocket of GPCRs. Evaluating 13 000 extensions for the β1- and β2-adrenergic receptors we synthesized and tested 112 bitopic molecules. Our results confirmed the positive contribution of the secondary binding pocket to both potency and selectivity optimizations.