Regioselective synthesis of 1-alkyl-5-(indol-3-yl- and -2-yl)pyrrolidin-2-ones from available reagents
摘要:
The reaction under mild conditions of 1-alkyl-5-hydroxypyrrolidin-2-ones with different indoles having a free 3 position leads exclusively to 1-alkyl-5-(indol-3-yl)pyrrolidin-2-ones but if position 3 is occupied to 1-alkyl-5-(indol-2-yl)pyrrolidin-2-ones.
Regioselective synthesis of 1-alkyl-5-(indol-3-yl- and -2-yl)pyrrolidin-2-ones from available reagents
摘要:
The reaction under mild conditions of 1-alkyl-5-hydroxypyrrolidin-2-ones with different indoles having a free 3 position leads exclusively to 1-alkyl-5-(indol-3-yl)pyrrolidin-2-ones but if position 3 is occupied to 1-alkyl-5-(indol-2-yl)pyrrolidin-2-ones.
[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.
Disclosed herein are substituted benzhydrylethers of Formula I, processes of preparation thereof, pharmaceutical compositions thereof, and methods of their use thereof.
本文揭示了式I的取代苯基乙醚,其制备方法,药物组合物以及它们的使用方法。
[EN] PROCESS FOR ENANTIOMERIC ENRICHMENT OF 2 ', 6 ' - PIPECOLOXYLIDIDE<br/>[FR] PROCÉDÉ D'ENRICHISSEMENT ÉNANTIOMERIQUE DE 2', 6'-PIPÉCOLOXYLIDIDE
申请人:NEON LAB LTD
公开号:WO2014009964A1
公开(公告)日:2014-01-16
The invention discloses a process for enantiomeric enrichment of 2',6'-pipecoloxylidide using a chiral carbamoyl benzoic acid to provide (S)-enantiomer in high yield and high enantiomeric purity. The invention also discloses novel intermediates formed in the process of enantiomeric enrichment of 2',6'-pipecoloxylidide, preparation of N- substituted amidic acids and alkylation of 2',6'-pipecoloxylidide.
[EN] PREPARATION OF MORPHOLINE DERIVATIVES<br/>[FR] PRÉPARATION DE DÉRIVÉS DE MORPHOLINE
申请人:SANDOZ AG
公开号:WO2009106486A1
公开(公告)日:2009-09-03
This invention relates to processes and intermediates for the stereoselective morpholine derivatives. The invention in particular allows the stereoselective preparation of the drugs aprepitant and fosaprepitant.