Metabolite of xanthine Phosphodiesterase 5 inhibitor and...

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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Details

C544S271000, C544S272000, C514S263350, C514S263360

Reexamination Certificate

active

10901574

ABSTRACT:
The present invention is directed to a metabolite of a xanthine Phosphodiesterase type 5 inhibitor having the following structurederivatives, and formulations thereof, and processes for preparing the same.Further disclosed are methods of treating a physiological disorder, symptom or disease in a patient, comprising administering to the patient an effective amount of the above compound, wherein the physiological disorder, symptom or disease is a urogenital, cardiovascular, cerebrovascular or peripheral vascular disorder, angina pectoris, hypertension, restenosis post angioplasty, endarterectomy, stent introduction, cerebral stroke, a respiratory tract disorder such as an allergic condition associated with atopy, pulmonary hypertension, an ischemic heart disorder, impaired glucose tolerance, diabetes and its related complication, insulin resistance syndrome, hyperglycemia, polycystic ovarian syndrome, a glomerular disorder, renal insufficiency, nephritis, a tubular interstitial disorder, an autoimmune disorder, glaucoma, intestinal motility, cachexia or cancer.

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Ahn, H.S., et.al., “Potent Tetracyclic Guanine Inhibitors . . . ”, Journal of Medicinal Chem., Am. Chem. Soc. vol. 40, No. 14, pp. 2196-2210 (1997).
Wang, Y., et.al., “Design and Synthesis of Xanthine Analogues . . . ”, Bioorganic and Medicinal Chemistry Letter, vol. 12, No. 21, pp. 3149-3152, (2002).
International Search Report for PCT/US2004/024525; mailed Dec. 21, 2004; 5 pages.

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