8-Alkyl-5-oxo-5,8-dihydro-pyrido(2,3-d)pyrimidine-6-carboxylic acids and their preparation
US3950338A · kind A · utility
6Cited by
2References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 31, 1973 |
| Grant date | Apr 13, 1976 |
| Priority date | — |
| Expiry date | Jul 31, 1993 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P31/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Valuable antibacterial 8-alkyl-5-oxo-5,8-dihydro-pyrido(2,3-d)pyrimidine-6-carboxylic acids, some of which are new compounds, are made from corresponding pyrimidines by a process involving condensation with an amino-ester, cyclization, halogenation, dehydrohalogenation, and saponification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.