Benzonaphthyridine-N-oxides comprising a PDE3 and PDE4 inhibiting activity
US6436952B1 · kind B1 · utility
15Cited by
4References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 15, 2001 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Feb 15, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P43/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Compounds of the formula I, in which R1, R2, R3 and R4 have the meanings indicated in the description, are novel active bronchial therapeutics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.