Stereoselective Addition of Methyl Acrylate to α-Amino Aldehydes
摘要:
Variously N-protected alpha-aminoaldehydes exhibit reasonable diastereoselectivity in the Baylis-Hillman coupling 1 with methyl acrylate to provide either primarily syn or anti alpha-methylene-beta-hydroxy-gamma-amino esters.
Process for preparing 3-hydroxymethyl-4-(aryl or heterocyclic)-cyclopentanones
申请人:——
公开号:US20020016492A1
公开(公告)日:2002-02-07
Processes are disclosed for preparing 3-hydroxymethylcyclopentanone compounds, which are useful as intermediates in the preparation of HIV chemokine CCR-5 receptor antagonists. A process is described in which the compounds are prepared by opening the cyclopropyl ring of a (1-alkoxycarbonyl-2-oxo)-trans-bicyclo[3.1.0]hexane compound by addition of a nucleophile to the cyclopropyl ring, and then decarboxylating the resulting 2-alkoxycarbonyl-3-(Nu-methyl)-cyclopentanone (Nu=the added nucleophilic group) via base solvolysis. Also described is a process for preparing the bicyclo[3.1.0]hexane precursors by the catalyzed cyclopropanation of a suitable alpha-diazo-beta-ketoester. The preparation of the alpha-diazo-beta-ketoesters and precursors thereto are also disclosed.
[EN] INHIBITORS OF INTEGRIN ALPHA 5 BETA 1 AND METHODS OF USE<br/>[FR] INHIBITEURS DE L'INTÉGRINE ALPHA 5 BÊTA 1 ET LEURS PROCÉDÉS D'UTILISATION
申请人:UNIV CALIFORNIA
公开号:WO2017173302A2
公开(公告)日:2017-10-05
Disclosed herein, inter alia, are inhibitors of integrin alpha 5 beta 1 and methods of using the same.
Stereoselective Addition of Methyl Acrylate to α-Amino Aldehydes
作者:Thavrin Manickum、Gregory Roos
DOI:10.1080/00397919108021585
日期:1991.12
Variously N-protected alpha-aminoaldehydes exhibit reasonable diastereoselectivity in the Baylis-Hillman coupling 1 with methyl acrylate to provide either primarily syn or anti alpha-methylene-beta-hydroxy-gamma-amino esters.
Manickum, Thavrin; Ross, Gregory H. P., South African Journal of Chemistry, 1994, vol. 47, # 1, p. 1 - 16