INTERMEDIATES OF SITAGLIPTIN AND PREPARATION PROCESS THEREOF
申请人:Pan Xianhua
公开号:US20130281695A1
公开(公告)日:2013-10-24
Disclosed are intermediates of Sitagliptin, a preparation process thereof, and a process for synthesizing Sitagliptin using these intermediates. Sitagliptin is synthesized by using chiral amino compounds as a raw material, without having to build a chiral center with a chiral asymmetric catalytic hydrogenation, and high-pressure hydrogenation is avoided.
[EN] SITAGLIPTIN SYNTHESIS<br/>[FR] SYNTHÈSE DE LA SITAGLIPTINE
申请人:GENERICS UK LTD
公开号:WO2010131025A1
公开(公告)日:2010-11-18
The present invention relates to novel processes for the preparation of enantiomerically enriched β -amino acid derivatives such as β -amino esters useful for the synthesis of enantiomerically enriched biologically active molecules such as sitagliptin. The key step involves the resolution of the racemate with mandelic acid.
The present invention relates to novel processes for the preparation of enantiomerically enriched β-amino acid derivatives such as β-amino esters useful for the synthesis of enantiomerically enriched biologically active molecules such as sitagliptin. The key step involves the resolution of the racemate with mandelic acid.
[EN] A NOVEL PROCESS FOR THE PREPARATION OF SITAGLIPTIN<br/>[FR] NOUVEAU PROCÉDÉ DE PRÉPARATION DE SITAGLIPTINE
申请人:SMILAX LAB LTD
公开号:WO2013114173A1
公开(公告)日:2013-08-08
The present invention is directed to a process for the preparation of enantiomerically enriched β-amino acid derivatives which are important chiral building blocks and intermediates in pharmaceuticals. More specifically, the invention pertains to a novel process for practically convenient and economically producing enantiomerically enriched β-amino acid derivatives which are useful for the synthesis of amide inhibitors of dipeptidyl peptidase IV like Sitagliptin, which have been used to treat type 2 diabetes.
[EN] EFFICIENT PROCESS FOR THE PREPARATION OF SITAGLIPTIN THROUGH A VERY EFFECTIVE PREPARATION OF THE INTERMEDIATE 2,4,5-TRIFLUOROPHENYLACETIC ACID<br/>[FR] PROCÉDÉ EFFICACE POUR LA PRÉPARATION DE SITAGLIPTINE PAR UNE PRÉPARATION TRÈS EFFICACE DE L'ACIDE 2,4,5-TRIFLUOROPHÉNYLACÉTIQUE INTERMÉDIAIRE
申请人:FIS FABBRICA ITALIANA SINTETICI SPA
公开号:WO2019007578A1
公开(公告)日:2019-01-10
Object of the present invention is an efficient process for the preparation of the active pharmaceutical ingredient Sitagliptine and the 2,4,5-trifluorophenylacetic acid (TFAA) and salt thereof, which is a key intermediate for the synthesis of Sitagliptine.