Imidazo[1,2-]pyridazines for cortical cholinergic deficiencies
US4910199A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1988 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Aug 31, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P25/28
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to imidazo[1,2-b]-pyridazines having the formula: ##STR1## in which: R.sub.1 represents hydrogen, a halogen atom, a C.sub.1 -C.sub.4 alkoxy group or a C.sub.1 -C.sub.4 alkyl group occupying one of the free positions of the benzene ring; R.sub.2 represents hydrogen, a C.sub.1 -C.sub.4 alkyl group or a phenyl group; R.sub.3 denotes hydrogen, a C.sub.1 -C.sub.4 alkyl group or a phenyl group; and R.sub.4 R.sub.5 represent hydrogen or a C.sub.1 -C.sub.4 alkyl group, or R.sub.4 and R.sub.5 form, together with the nitrogen atom to which they are bonded, a 5-membered or 6-membered heterocycle optionally containing a second heteroatom. Application: drugs, especially for the treatment of cortical cholinergic deficiencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.