Diastereoselective Darzens Condensations of α-Haloamides: Influence of Aryl Substituents on Diastereoselectivity
作者:Michael North、Francesca Pizzato
DOI:10.2174/157017809789869465
日期:2009.10.1
N,N-Diaryl α-haloamides undergo Darzens condensations with aldehydes induced by metal hydroxides. The diastereoselectivity of epoxide formation is strongly influenced by the electronic properties of the arylamide, which can be rationalised on the basis of the acidity of the substrate hydrogens and hence on reaction occurring under kinetic or thermodynamic control.
A Convenient Method for Preparation of α-Imino Carboxylic Acid Derivatives and Application to the Asymmetric Synthesis of Unnatural α-Amino Acid Derivative
glycine derivatives for the synthesis of α-imino carboxylic acidderivatives. Using this methodology, utilization of unstable glyoxic acidderivatives was avoided. Furthermore, using this methodology we synthesized novel α-imino carboxylic acidderivatives such as α-imino phenyl ester, perfluoroalkyl etsers, imides, and thioester. The asymmetric Mannich reaction of those novel imine derivatives with 1
[EN] SUBSTITUTED THIENYL-HYDROXAMIC ACIDS AS HISTONE DEACETYLASE INHIBITORS<br/>[FR] ACIDES SUBSTITUES THIENYLHYDROXAMIQUES UTILISES EN TANT QU'INHIBITEURS D'HISTONE DESACETYLASE
申请人:ARGENTA DISCOVERY LTD
公开号:WO2004013130A1
公开(公告)日:2004-02-12
A compound of formula (I): which can be used in the treatment of diseases associated with histone deacetylase enzymatic activity.
化合物的化学式(I):可用于治疗与组蛋白去乙酰化酶活性相关的疾病。
Synthesis of Substituted Oxindoles from α-Chloroacetanilides via Palladium-Catalyzed C−H Functionalization
作者:Edward J. Hennessy、Stephen L. Buchwald
DOI:10.1021/ja037546g
日期:2003.10.1
A novel method for the synthesis of oxindoles is described. In the presence of catalytic palladium acetate and 2-(di-tert-butylphosphino)biphenyl, α-chloroacetanilides are converted to oxindoles in good to excellent yields with high functional group compatibility using triethylamine as a stoichiometric base. The cyclization is highly regioselective, obviating the need for prefunctionalized arenes.