2H-Pyrimido[4,5-d][1,3]oxazine-2,4(1H)-dione derivatives
US4255568A · kind A · utility
2Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1979 |
| Grant date | Mar 10, 1981 |
| Priority date | — |
| Expiry date | Oct 29, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D498/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The disclosed 2H-pyrimido[4,5-d][1,3]oxazine-2,4(1H)-dione derivatives are intermediates useful in the production of 7,8-dihydro-2,5,8-trisubstituted-7-oxo-pyrido[2,3-d]pyrimidine-6-carboxyli c acid derivatives which are gastric anti-secretory agents and anti-allergic agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.