Theophylline and 3-isobutyl-1 methylxanthine based N-7...

Details Theophylline and 3-isobutyl-1 methylxanthine based N-7... Theophylline and 3-isobutyl-1 methylxanthine based N-7...

2005-05-04

2009-06-23

Berch, Mark L (Department: 1624)

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Heterocyclic carbon compounds containing a hetero ring...

C544S267000, C544S269000, C544S270000, C544S271000, C544S273000

Reexamination Certificate

active

07550468

ABSTRACT:
A variety of N-substituted derivatives are based upon the base chemicals ofthat provide for the induction of cavernosal relaxation in animals. R2 is a derivative based on a hetroaromatic group, an aromatic group or a cyclohexane.

REFERENCES:
patent: 4284633 (1981-08-01), Friebe et al.
patent: 4299832 (1981-11-01), Brown et al.
patent: 4599414 (1986-07-01), Sugimoto et al.
patent: 2005/0209243 (2005-09-01), Chen
patent: 2008/0064705 (2008-03-01), Chen
Daly, Journal of Medicinal Chemistry (1986), 29(7), 1305-8.

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