[EN] PROCESS FOR PREPARING CHIRAL DIPEPTIDYL PEPTIDASE-IV INHIBITORS<br/>[FR] PROCÉDÉ DE PRÉPARATION D'INHIBITEURS CHIRAUX DE DIPEPTIDYL PEPTIDASE-IV
申请人:MERCK SHARP & DOHME
公开号:WO2016014324A1
公开(公告)日:2016-01-28
A process for preparing a compound of structural Formula Ia: comprising Boc deprotection with TFA of, reductive amination of:.
制备结构式Ia化合物的过程:包括使用三氟乙酸对Boc进行去保护,还有还原胺化反应。
Dynamic Kinetic Resolution of Heterobiaryl Ketones by Zinc-Catalyzed Asymmetric Hydrosilylation
作者:Valentín Hornillos、José A. Carmona、Abel Ros、Javier Iglesias-Sigüenza、Joaquín López-Serrano、Rosario Fernández、José M. Lassaletta
DOI:10.1002/anie.201713200
日期:2018.3.26
A diastereo‐ and highly enantioselective dynamic kinetic resolution (DKR) of configurationally labile heterobiaryl ketones is described. The DKR proceeds by zinc‐catalyzed hydrosilylation of the carbonyl group, thus leading to secondary alcohols bearing axial and central chirality. The strategy relies on the labilization of the stereogenic axis that takes place thanks to a Lewis acid–base interaction
Method of enantioselective nucleophilic addition reaction of enamide to carbonyl group and synthesis method of optically active alpha-hydroxy-y-keto acid ester and hydroxydiketone
申请人:Kobayashi Shu
公开号:US20070073087A1
公开(公告)日:2007-03-29
A method of an enantioselective nucleophilic addition reaction to carbonyl, which enables an asymmetric synthesis of an optically active α-hydroxy-γ-keto acid ester, an optically active α-hydroxy-γ-amino acid ester, hydroxydiketone compounds, etc. being useful as a raw material or synthesis intermediate for producing a pharmaceutical preparation, an agricultural chemical, a fragrance, a functional polymer or the like. In this method, the nucleophilic addition reaction of enamide compound accompanied by hydroxyl (—OH) formation to carbonyl is carried out in the presence of a chiral catalyst with copper or nickel.
Asymmetric organocatalysis of the addition of acetone to 2-nitrostyrene using N-diphenylphosphinyl-1,2-diphenylethane-1,2-diamine (PODPEN)
作者:David J. Morris、A. Simon Partridge、Charles V. Manville、Daugidas T. Racys、Gary Woodward、Gordon Docherty、Martin Wills
DOI:10.1016/j.tetlet.2009.10.131
日期:2010.1
The highly enantioselective addition of acetone to 2-nitrostyrene, using N-diphenylphosphinyl-trans-1,2-diphenylethane-1,2-diamine (PODPEN) as a catalyst, is described. (C) 2009 Elsevier Ltd. All rights reserved.
PROCESS FOR PREPARING CHIRAL DIPEPTIDYL PEPTIDASE-IV INHIBITORS
申请人:Merck Sharp & Dohme Corp.
公开号:US20170158701A1
公开(公告)日:2017-06-08
A process for preparing a compound of structural Formula Ia: comprising Boc deprotection with TFA of, reductive amination of: