A homogeneous catalyst system for the asymmetric cis-hydrogenation of 2,5-disubstituted furans leading to 2',3'-dideoxynucleoside analogues is described. Best enantioselectivities (ee values of up to 72%) were obtained with cationic rhodium complexes ligated by diphospholanes of the butiphane family. The selectivity of the hydrogenation was reversed by the addition of a base or a polar protic solvent
[EN] DIASTEREOSELECTIVE PROCESS FOR PREPARING OF BETA-D AND BETA-L 2' , 3' -DIDEOXY NUCLEOSIDE ANALOGS<br/>[FR] PROCEDE DIASTEREOSELECTIF POUR LA PREPARATION D'ANALOGUES DE BETA-D ET BETA-L 2',3'-DIDESOXY NUCLEOCIDE
申请人:INNOVATIONSAGENTUR GMBH
公开号:WO2003082890A1
公开(公告)日:2003-10-09
The present invention related to a novel diastereoselective proces for preparing β-D- and β-L-2' , 3' -dideoxy nucleoside analogs and to intermediates useful in this process.