Pyrazolo[4,3-d]pyrimidines as Phosphodiesterase Inhibitors

Details Pyrazolo[4,3-d]pyrimidines as Phosphodiesterase Inhibitors Pyrazolo[4,3-d]pyrimidines as Phosphodiesterase Inhibitors

2004-11-24

2009-08-11

Coleman, Brenda L (Department: 1624)

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Having -c-, wherein x is chalcogen, bonded directly to...

C544S262000

Reexamination Certificate

active

07572799

ABSTRACT:
This invention relates to compounds of formula (I)

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