Process for the synthesis of pyrazolopyrimidines
US6962991B2 · kind B2 · utility
40Cited by
2References
56Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2001 |
| Grant date | Nov 8, 2005 |
| Priority date | — |
| Expiry date | Sep 12, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07H19/044
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a nucleoside comprising a pyrazolopyrimidine base and a process for producing the same. In particular, the processes of the present invention comprises using a halogenated pyrazolopyrimidine base and removing the halogen after the base is coupled to a sugar moiety. The presence of the halogen on the nucleoside base allows facile and economical production of a large quantity of nucleosides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.