Process for preparing substituted...

Details Process for preparing substituted... Process for preparing substituted...

2007-04-20

2008-10-21

Wilson, James O. (Department: 1624)

Organic compounds -- part of the class 532-570 series

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

Reexamination Certificate

active

07439361

ABSTRACT:
A process for preparing substituted 5-amino-pyrazolo[4,3-e]-1,2,4-triazolo-[1,5-c]pyrimidine compounds having an aminoalkyl substituent at the 7-position is disclosed, wherein the pyrimidine ring is cyclized using a cyanating agent.

REFERENCES:
patent: 6407236 (2002-06-01), Baraldi et al.
patent: 1 364 953 (2003-11-01), None
patent: WO 95/01356 (1995-01-01), None
patent: WO 01/92264 (2001-12-01), None
Baraldi, et. al.; “Design, Synthesis and Biological Evaluation of C9—and C2-Substituted Pyrazolo [4,3-e]-1,2,4-triazolo [1,5-c] pyrimidines as New A2A and A3Adenosine Receptors Antagonists”,J. Med. Chem.; 46 (2003); pp. 1229-1241.
Baraldi, et. et al.; “Design, Synthesis, and Biological Evaluation of a Second Generation of Pyrazolo [4,3-e]-1,2,4-triazolo [1,5-c] pyrimidines as Potent and Selective A2AAdenosine Receptor Antagonists”,J. Med. Chem.; 41 (1998); pp. 2126-2133.
Baraldi, et. al.; “Pyrazolo [4,3-e]-1,2,4-triazolo [1,5-c] pyrimidine Derivatives: Potent and Selective A2AAdenosine Antagonists”,J. Med. Chem.; 39 (1996); pp. 1164-1171.

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