Pyrido[1,2-a]pyrimidine derivatives
US4219649A · kind A · utility
5Cited by
1References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1978 |
| Grant date | Aug 26, 1980 |
| Priority date | — |
| Expiry date | Aug 17, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P29/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Compounds of the formula: ##STR1## or pharmaceutically acceptable acid addition or quaternary ammonium salts thereof wherein PA1 R.sup.2 is C.sub.1 to C.sub.6 alkyl: PA1 R.sup.3 is C.sub.1 to C.sub.6 alkyl; PA1 R.sup.4 is a single electron pair, hydrogen or lower alkyl; and the dotted lines indicate saturated or unsaturated bonds, are disclosed with analgesic properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.