RU97110266A - Способ очистки и выделения 2'-дезокси-2',3'-дифторнуклеозидов - Google Patents

Способ очистки и выделения 2'-дезокси-2',3'-дифторнуклеозидов

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Publication number
RU97110266A
RU97110266A RU97110266/04A RU97110266A RU97110266A RU 97110266 A RU97110266 A RU 97110266A RU 97110266/04 A RU97110266/04 A RU 97110266/04A RU 97110266 A RU97110266 A RU 97110266A RU 97110266 A RU97110266 A RU 97110266A
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Russia
Prior art keywords
nucleoside
formula
enriched
anomer
beta
Prior art date
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RU97110266/04A
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English (en)
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RU2161622C2 (ru
Inventor
Чоу Та-Сен
Мишель Поте Лори
Паттон Челль Дуглас
Original Assignee
Эли Лилли Энд Компани
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Priority claimed from US08/340,972 external-priority patent/US5606048A/en
Application filed by Эли Лилли Энд Компани filed Critical Эли Лилли Энд Компани
Publication of RU97110266A publication Critical patent/RU97110266A/ru
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Publication of RU2161622C2 publication Critical patent/RU2161622C2/ru

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Claims (8)

1. Способ очистки и выделения нуклеозида, обогащенного бета-аномером, включающий:
a) получение смеси, содержащей R'', и обогащенный бета-аномером нуклеозид формулы IB
Figure 00000001

где каждый X независимо выбирают из гидроксизащитных групп, и R' представляет нуклеиновое основание формулы
Figure 00000002

где W представляет аминозащитную группу; и R'' представляет нуклеиновое основание формулы
Figure 00000003

где W' представляет аминозащитную группу или водород; в высококипящем растворителе;
b) разбавление смеси органическим растворителем, выбранным из группы, состоящей из простых эфиров, сложных эфиров и нитрилов;
c) добавление разбавленной реакционной смеси в водную кислоту; и
d) выдерживание полученной кислой смеси при температуре от 70 до 100oC, до тех пор, пока не осадится продукт формулы IB, где W представляет собой теперь W'.
2. Способ по п.1, где реакционную смесь разбавляют ацетонитрилом, этилацетатом и тетрагидрофураном.
3. Способ по п.2, где реакционную смесь разбавляют ацетонитрилом.
4. Способ по п.1, где водная кислота представляет собой 1 - 6 н соляную кислоту.
5. Способ по п.1, где кислую смесь перемешивают во время осаждения продукта.
6. Способ по п. 1, дополнительно включающий деблокирование очищенного продукта формулы IB для образования нуклеозида, который представляет собой 1-(2'-деокси-2',2'-дифтор-D-рибофуранозил)-4- аминопиримидин-2-он.
7. Способ очистки нуклеозида, обогащенного бета-аномером, описанного в настоящем изобретении и проиллюстрированного примером.
8. Способ очистки нуклеозида, обогащенного бета-аномером, описанного в настоящем изобретении и проиллюстрированного примером, дополнительно включающий
(e) стадию извлечения R'' для последующей рециркуляции.
RU97110266/04A 1994-11-17 1995-11-01 Способ очистки и выделения 2'-дезокси-2',2'-дифторнуклеозидов RU2161622C2 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/340,972 1994-11-17
US08/340,972 US5606048A (en) 1992-06-22 1994-11-17 Stereoselective glycosylation process for preparing 2'-Deoxy-2', 2'-difluoronucleosides and 2'-deoxy-2'-fluoronucleosides

Publications (2)

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RU97110266A true RU97110266A (ru) 1999-05-20
RU2161622C2 RU2161622C2 (ru) 2001-01-10

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EP (1) EP0712860B1 (ru)
JP (1) JPH10509170A (ru)
KR (1) KR100424990B1 (ru)
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