Patent · US Active

Theophylline and 3-isobutyl-1 methylxanthine based N-7 substituted derivatives displaying inhibitory activities on PDE-5 phospodiesterase

US7550468B2 · kind B2 · utility

1Cited by
3References
7Claims
0Family size

Inventor

Key dates

Filing dateMay 4, 2005
Grant dateJun 23, 2009
Priority date—
Expiry dateJul 9, 2026

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07D473/08
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.