[EN] A PROCESS FOR CHIRAL RESOLUTION OF 2-SUBSTITUTED 4-SUBSTITUTED 1,3-OXATHIOLANES<br/>[FR] PROCÉDÉ POUR LA RÉSOLUTION CHIRALE DE 1,3-OXATHIOLANES SUBSTITUÉS EN 2, SUBSTITUÉS EN 4
申请人:AVEXA LTD
公开号:WO2009039582A1
公开(公告)日:2009-04-02
The present invention relates to a novel process for the chiral resolution of 2-substituted 4-substituted 1,3-oxathiolanes and derivatives thereof. The present invention also relates to novel 2-substituted 4-substituted 1,3-oxathiolanes derivatives.
Enantiomeric resolution of 2-substituted 4-substituted 1,3-oxathiolanes nucleosides
申请人:Shire Biochem, Inc.
公开号:US07501514B1
公开(公告)日:2009-03-10
Single enantionmers of compounds of formula (B), in either the cis or trans configuration,
wherein R1 and R2 are as defined herein, can be separated from enantiomeric mixtures thereof by reacting the compound with an acid to produce a conglomerate salt that has the following characteristics:
the IR spectrum of the salt of the racemic compound, a 1:1 mixture of (−) and (+) crystals, is identical to that of the each of the single enantiomer, and
the salt of the racemic compound has a melting point lower that that of either single enantiomer. The conglomerate salt is then separated by preferential crystallization.
PROCESS FOR CHIRAL RESOLUTION OF 2-SUBSTITUTED 4-SUBSTITUTED 1,3-OXATHIOLANES
申请人:Epa Widanagamage Ruwansiri
公开号:US20100305321A1
公开(公告)日:2010-12-02
The present invention relates to a novel process for the chiral resolution of 2-substituted 4-substituted 1,3-oxathiolanes and derivatives thereof. The present invention also relates to novel 2-substituted 4-substituted 1,3-oxathiolanes derivatives.