Pyrido[1,2-A]pyrimidine derivatives and method of analgesic treatment
US4291036A · kind A · utility
7Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1980 |
| Grant date | Sep 22, 1981 |
| Priority date | — |
| Expiry date | Mar 14, 2000 |
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 quaternart ammonium salts thereof PA0 wherein PA0 R is hydroxy, carboxy, lower alkoxycarbonyl, benzyloxycarbonyl, phenoxycarbonyl, carbamoyl, N-loweralkyl-carbamoyl, N,N-dilower-alkyl-carbamoyl, carboazido, carbohydrazido or cyano; PA0 R.sup.2 is C.sub.1 to C.sub.6 alkyl; PA0 R.sup.3 is C.sub.1 to C.sub.6 alkyl or benzyl; and PA0 R.sup.4 is a single electron pair, hydrogen or lower alkyl; and the dotted lines represent saturated or unsaturated bonds, are disclosed with analgesic properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.