[EN] PROCESS FOR THE PREPARATION OF 9-BETA-ANOMERIC NUCLEOSIDE ANALOGS<br/>[FR] PROCEDE DE PREPARATION D'ANALOGUES DE NUCLEOSIDES 9-BETA-ANOMERIQUE
申请人:ASH STEVENS INC
公开号:WO2004018490A1
公开(公告)日:2004-03-04
A process for substantially enhancing the regio and stereoselective synthesis of 9-β-anomeric nucleoside analogs is described. The introduction of the sugar moiety onto a 6-substituted purine base was preformed so that only the 9-β-D- or L-purine nucleoside analogs were obtained. This regio and stereoselective introduction of the sugar moiety allows the synthesis of nucleoside analogs and in particular 2'-deoxy, 3'-deoxy, 2'-deoxy-2'-β-fluoro and 2', 3'-dideoxy-2'-β-fluoro purine nucleoside analogs in high yield without virtually any formation of the 7-positional isomers. The compounds are drugs or intermediates to drugs.
PROCESS FOR THE PREPARATION OF 9-BETA-ANOMERIC NUCLEOSIDE ANALOGS
申请人:ASH STEVENS, INC.
公开号:EP1554298A1
公开(公告)日:2005-07-20
EP1554298A4
申请人:——
公开号:EP1554298A4
公开(公告)日:2007-09-26
US6884880B2
申请人:——
公开号:US6884880B2
公开(公告)日:2005-04-26
Process for the preparation of 9-beta-anomeric nucleoside analogs
申请人:Ash Stevens, Inc.
公开号:US20040039190A1
公开(公告)日:2004-02-26
A process for substantially enhancing the regio and stereoselective synthesis of 9-&bgr;-anomeric nucleoside analogs is described. The introduction of the sugar moiety onto a 6-substituted purine base was preformed so that only the 9-&bgr;-D- or L-purine nucleoside analogs were obtained. This regio and stereoselective introduction of the sugar moiety allows the synthesis of nucleoside analogs and in particular 2′-deoxy, 3′-deoxy, 2′-deoxy-2′-&bgr;-fluoro and 2′,3′-dideoxy-2′-&bgr;-fluoro purine nucleoside analogs in high yield without virtually any formation of the 7-positional isomers. The compounds are drugs or intermediates to drugs.