发明申请
US20070238865A1 1-Alpha-Halo-2,2-Difluoro-2-Deoxy-D-Ribofuranose Derivatives and Process for the Preparation Thereof
失效
1-α-卤代-2,2-二氟-2-脱氧-D-呋喃核糖衍生物及其制备方法
- 专利标题: 1-Alpha-Halo-2,2-Difluoro-2-Deoxy-D-Ribofuranose Derivatives and Process for the Preparation Thereof
- 专利标题(中): 1-α-卤代-2,2-二氟-2-脱氧-D-呋喃核糖衍生物及其制备方法
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申请号: US11572790申请日: 2005-06-21
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公开(公告)号: US20070238865A1公开(公告)日: 2007-10-11
- 发明人: Jaeheon Lee , Gha Park , Moonsub Lee , Han Kim , Hyo-Jeong Bang , Young-Kil Chang , Gwan Lee
- 申请人: Jaeheon Lee , Gha Park , Moonsub Lee , Han Kim , Hyo-Jeong Bang , Young-Kil Chang , Gwan Lee
- 申请人地址: KR Kyungki-do
- 专利权人: Hanmi Pharm Co., Ltd
- 当前专利权人: Hanmi Pharm Co., Ltd
- 当前专利权人地址: KR Kyungki-do
- 优先权: KR10-2004-0059623 20040729; KR10-2005-0041278 20050517
- 国际申请: PCT/KR05/01922 WO 20050621
- 主分类号: C07H15/00
- IPC分类号: C07H15/00
摘要:
1-α-halo-2,2-difluoro-2-deoxy-D-ribofuranose derivative of formula (I) having the 3-hydroxy group protected with a biphenylcarbonyl group is a solid which can be easily purified by a simple procedure such as recrystallization, and therefore, it can be advantageously used as an intermediate in the preparation of gemcitabine in a large scale. Further, the 1-α-halo-2,2-difluoro-2-deoxy-D-ribofuranose derivative of formula (I) can be prepared with high stereoselectivity using the compound of formula (V) as an intermediate.
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