-
公开(公告)号:US20090221811A1
公开(公告)日:2009-09-03
申请号:US12430525
申请日:2009-04-27
申请人: Vladimir NADDAKA , Eyal KLOPFER , Shady SAEED , Dionne MONTVILISKY , Oded ARAD , Joseph KASPI
发明人: Vladimir NADDAKA , Eyal KLOPFER , Shady SAEED , Dionne MONTVILISKY , Oded ARAD , Joseph KASPI
IPC分类号: C07H19/06 , C07D317/30
CPC分类号: C07D317/30 , C07D305/12 , C07D317/44
摘要: The present invention provides processes for preparing intermediates useful in the preparation of gemcitabine and other nucleosides, and processes for preparing gemcitabine therewith. Exemplary intermediates include mixtures of D-erythro and D-threo isomers of 3-(hydroxy)-2,2-difluoro-3-(2,2-dimethyldioxolan-4-yl)-propionic acid salts. Also provided is a process for selectively isolating the D-erythro and D-threo isomers of D-erythro and D-threo isomers of 3-(hydroxy)-2,2-difluoro-3-(2,2-dimethyldioxolan-4-yl)-propionic acid salts, and processes for using such isomers in the preparation of nucleoside analogs such as, e.g., gemcitabine, intermediates thereof, and analogs thereof.
摘要翻译: 本发明提供了制备可用于制备吉西他滨和其它核苷的中间体的方法,以及制备吉西他滨的方法。 示例性中间体包括3-(羟基)-2,2-二氟-3-(2,2-二甲基二氧代环戊烷-4-基) - 丙酸盐的D-赤藓糖醇和D-苏糖异构体的混合物。 还提供了选择性分离3-(羟基)-2,2-二氟-3-(2,2-二甲基二氧戊环-4-基)-2-甲基苯并呋喃的D-赤式和D-苏糖异构体的D-赤式和D-苏式异构体的方法, 以及在制备核苷类似物例如吉西他滨,其中间体及其类似物中使用这些异构体的方法。
-
公开(公告)号:US20070249823A1
公开(公告)日:2007-10-25
申请号:US11697379
申请日:2007-04-06
申请人: Vladimir Naddaka , Eyal Klopfer , Shady Saeed , Dionne Montvilisky , Oded Arad , Joseph Kaspi
发明人: Vladimir Naddaka , Eyal Klopfer , Shady Saeed , Dionne Montvilisky , Oded Arad , Joseph Kaspi
IPC分类号: C07H19/00
CPC分类号: C07D317/16 , C07D317/24 , C07D317/30 , C07H1/00 , C07H1/06 , C07H15/04 , C07H19/00 , C07H19/073
摘要: The present invention provides novel intermediates, which preferably include 3-substituted, alkyl 2,2-difluoro-3-hydroxy-3-(2,2-dialkyldioxolan-4-yl)-propionate derivatives, and 3,5-disubstituted-2-deoxy-2,2-difluoro-1-oxo-D-ribose derivatives. The present invention also provides processes for producing such intermediates and processes for producing gemcitabine therewith.
摘要翻译: 本发明提供新的中间体,其优选包括3-取代的2,2-二氟-3-羟基-3-(2,2-二烷基二氧戊环-4-基) - 丙酸酯衍生物和3,5-二取代-2 脱氧-2,2-二氟-1-氧代-D-核糖衍生物。 本发明还提供了生产此类中间体的方法和用于制备吉西他滨的方法。
-
公开(公告)号:US20070191598A1
公开(公告)日:2007-08-16
申请号:US11668963
申请日:2007-01-30
申请人: Vladimir Naddaka , Eyal Klopfer , Shady Saeed , Dionne Montvilisky , Oded Arad , Joseph Kaspi
发明人: Vladimir Naddaka , Eyal Klopfer , Shady Saeed , Dionne Montvilisky , Oded Arad , Joseph Kaspi
IPC分类号: C07H19/06 , C07D305/12 , C07D317/44
CPC分类号: C07D317/30 , C07D305/12 , C07D317/44
摘要: The present invention provides processes for preparing novel chemical substances that are useful as intermediates in the preparation of gemcitabine and processes for preparing gemcitabine therewith. Exemplary intermediates include mixtures of D-erythro and D-threo (3R- and 3S-) isomers of 3-(hydroxy)-2,2-difluoro-3-(2,2-dimethyldioxolan-4-yl)propionic acid salts. Also provided is a novel process for selectively isolating the D-erythro and D-threo isomers of the said salts in purities of at least about 95%, and processes of using them for preparing nucleoside analogs such as, e.g., gemcitabine and intermediates and analogs thereof.
摘要翻译: 本发明提供了制备可用作制备吉西他滨的中间体的新型化学物质的方法及其制备吉西他滨的方法。 示例性中间体包括3-(羟基)-2,2-二氟-3-(2,2-二甲基二氧戊环-4-基)丙酸盐的D-赤式和D-苏(3R-和3S-)异构体的混合物。 还提供了一种用于选择性分离所述盐的D-赤式和D-苏式异构体的纯度为至少约95%的新方法,以及用于制备核苷类似物如吉西他滨和中间体和类似物的方法 其中。
-
-