Synthesis of optically-active benzylic amines; asymmetric reduction of ketoxime ethers with chiral oxazaborolidines
作者:Evelyne Fontaine、Claudie Namane、Jérôme Meneyrol、Michel Geslin、Laurence Serva、Eliane Roussey、Stéphanie Tissandié、Mohamed Maftouh、Pierre Roger
DOI:10.1016/s0957-4166(01)00358-5
日期:2001.8
The preparation of novel optically active benzylic amines by the enantioselectivereduction of phenone oximes using chiral oxazaborolidine is described. The choice of the chiral 1,2-amino alcohol (S)-diphenylvalinol as chiral inducer and that of the benzyl group for the O-oxime substituent is explained. 23 primary amines are obtained, with high enantioselectivity (e.e.=98%), good yield (74%) on preparative
[EN] AMINOTHIAZOLE DERIVATIVES AND THEIR USE AS CRF RECEPTOR LIGANDS<br/>[FR] DERIVES D'AMINOTHIAZOLE ET LEUR UTILISATION COMME LIGANDS DES RECEPTEURS CRF
申请人:SANOFI SYNTHELABO
公开号:WO2001005776A1
公开(公告)日:2001-01-25
La présente invention concerne les composés de formule (I) dans laquelle R1, R2, R3, R4, R5, R6 et R7 sont tels que définis dans la revendication 1. Ces composés sont affins pour les récepteurs du CRF.
Synthesis of <i>N</i>-alkoxy amines and hydroxylamines <i>via</i> the iridium-catalyzed transfer hydrogenation of oximes
作者:Yanping Xia、Sen Wang、Rui Miao、Jianhua Liao、Lu Ouyang、Renshi Luo
DOI:10.1039/d2ob01084d
日期:——
hydrogenation of oximes to access N-alkoxy amines and hydroxylamines, and the reaction was accelerated by trifluoroacetic acid. The practical application of this protocol was demonstrated by a gram-scale transformation and two-step synthesis of the fungicide furmecyclox (BAS 389F) in overall yields of 92 and 85%, respectively. An asymmetric protocol using chiral Ir complexes to afford chiral N-alkoxy amines was
DERIVES D'AMINOTHIAZOLE ET LEUR UTILISATION COMME LIGANDS DES RECEPTEURS CRF
申请人:SANOFI-SYNTHELABO
公开号:EP1200419A1
公开(公告)日:2002-05-02
NOUVEAUX DERIVES AMINO SUBSTITUES RAMIFIES DU 3-AMINO-1-PHENYL-1H[1,2,4]TRIAZOLE, PROCEDES POUR LEUR PREPARATION ET COMPOSITIONS PHARMACEUTIQUES LES CONTENANT