N-substituted-4-pyrimidinamines and pyrimidinediamines
US5179204A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1990 |
| Grant date | Jan 12, 1993 |
| Priority date | — |
| Expiry date | Sep 18, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D403/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to N-heteroaryl-4-pyrimidinamines of the formula ##STR1## where R.sub.1 is hydrogen, loweralkyl, aryl, or arylloweralkyl; R.sub.2 and R.sub.3 are independently hydrogen or loweralkyl, or R.sub.2 and R.sub.3 taken together are aryl; R.sub.4 and R.sub.5 are independently hydrogen or loweralkyl, or R.sub.4 and R.sub.5 taken together are aryl; X is hydrogen, halogen, cyano, nitro, amino, loweralkyl, loweralkoxy, trifluoromethyl or ##STR2## where Y is hydrogen, halogen or loweralkyl; m is an integer of 1 to 3; and the pharmaceutically acceptable acid addition salts thereof and where applicable the geometrical and optical isomers and racemic mixtures thereof. The compounds of this invention display utility as memory enhancing agents and as analgesic agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.