[EN] A STEREOSELECTIVE PROCESS FOR PREPARATION OF 1,3-OXATHIOLANE NUCLEOSIDES<br/>[FR] PROCÉDÉ STÉRÉOSÉLECTIF DE PRÉPARATION DE NUCLÉOSIDES 1,3-OXATHIOLANE
申请人:LUPIN LTD
公开号:WO2013021290A1
公开(公告)日:2013-02-14
The present invention relates to a stereoselective glycosylation for the preparation of 1,3-oxathiolane nucleoside in high yield and high optical purity. The invention specifically relates to a process of the preparation of Lamivudine and Emtricitabine using zirconium (IV) chloride (ZrCl4) as a catalyst in glycosylation.
[EN] PROCESS FOR OBTAINING EMTRICITABINE<br/>[FR] PROCÉDÉ D'OBTENTION D'EMTRICITABINE
申请人:ESTEVE QUIMICA SA
公开号:WO2011120927A1
公开(公告)日:2011-10-06
The invention refers to a process for obtaining or isolating emtricitabine which comprises the azeotropic distillation of methanol-B(OMe)3. The invention is also directed to emtricitabine having a content of boron species of not more than 0.1 % by weight.
The invention refers to a process for obtaining or isolating emtricitabine which comprises the azeotropic distillation of methanol-B(OMe)3. The invention is also directed to emtricitabine having a content of boron species of not more than 0.1 % by weight.
[EN] PROCESS AND INTERMEDIATES FOR PREPARING EMTRICITABINE<br/>[FR] PROCEDE ET INTERMEDIAIRES POUR PREPARER DE L'EMTRICITABINE
申请人:CLARIANT LSM ITALIA SPA
公开号:WO2004085432A1
公开(公告)日:2004-10-07
A novel process for preparing emtricitabine, and more particularly a process for preparing emtricitabine characterized by the formation and isolation of intermediate compounds in salified form, is described.
Processes for the diastereoselective synthesis of nucleoside analogues
申请人:BioChem Pharma Inc.
公开号:US05696254A1
公开(公告)日:1997-12-09
The present invention relates to highly diastereoselective processes for production of cis-nucleosides and nucleoside analogues and derivatives in high optical purity, and intermediates useful in those processes.