Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Reexamination Certificate
2005-11-08
2005-11-08
Wilson, James O. (Department: 1623)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
C536S022100, C536S018700, C536S027140, C536S124000, C544S253000, C544S245000
Reexamination Certificate
active
06962991
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.
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patent: 5844106 (1998-12-01), Seela et al.
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patent: WO 01/64589 (2001-09-01), None
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Adams A. David
Belousov Yevgeniy S.
Dempcy Robert O.
Reed Michael W.
Epoch Biosciences, Inc.
Henry Michael C.
Townsend and Townsend / and Crew LLP
Wilson James O.
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