8-quinolinxanthine and 8-isoquinolinxanthine derivatives as PDE 5 inhibitors
US7361661B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jan 11, 2006 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | Jan 11, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D473/06
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A compound of formula (I)R1 is hydrogen or alkyl optionally substituted by hydroxy, alkoxy, or alkylthio, R2 is hydrogen, alkyl, hydroxyalkyl, alkylcarbonyloxyalkyl, alkoxyalkyl, alkylthioalkyl, alkenyl, cycloalkylalkyl, heterocyclylalkyl, aralkyl in which the aryl ring thereof is optionally fused to a 5-membered heterocyclic group or is optionally substituted by one or more substituents selected from alkoxy, amino, alkylamino, dialkylamino, acylamino, halogen, hydroxy, aminosulfonyl, alkylaminosulfonyl, dialkylaminosulfonyl, alkylsufonylamino or dialkylaminosulfonylamino, R3 is hydrogen or alkyl optionally substituted by hydroxy, alkoxy, or alkylthio, R4 is hydrogen or alkyl, R5 is a quinolinyl, isoquinolinyl or oxodihydroisoquinolinyl group optionally fused to a 5-membered heterocyclic group and optionally substituted by one or more substituents selected from halogen, cyano, hydroxy, alkyl, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl, alkoxy, alkylthio, alkenyl, alkoxycarbonyl, alkynyl, carboxyl, acyl, a group of formula —N(R6)R7, aryl optionally substituted by one or more substituents selected from halogen or alkoxy, or heteroaryl having 5 or 6 ring atoms attached through a ring c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.