4-AMINO-5,6-SUBSTITUTED THIOPHENO [2,3-D] PYRIMIDINES,...

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

Reexamination Certificate

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C544S250000

Reexamination Certificate

active

06849638

ABSTRACT:
The invention relates to 4-amino-5,6-substituted thiopheno [2,3-d] pyrimidines, pharmaceutical compositions containing the same and their use to treat or prevent diseases and conditions mediated by the phosphodiesterase enzyme 7B(PDE7B). Diseases and conditions mediated by PDE7Binclude osteoporosis, osteopenia and asthma.

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