5-Chloro-7,8-dihydro-7-oxo-pyrido[2,3-d]pyrimidine-6-carboxylic acid derivatives
US4233446A · kind A · utility
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4Claims
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Key dates
| Filing date | Oct 29, 1979 |
| Grant date | Nov 11, 1980 |
| Priority date | — |
| Expiry date | Oct 29, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D471/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
7-Chloro-7,8-dihydro-7-oxo-pyrido[2,3]-d]pyrimidine-6-carboxylic acid derivatives are intermediates useful for the production of 7,8-dihydro-2,5,8-trisubstituted-7-oxo-pyrido[2,3-d]-pyrimidine-6-carboxyl ic acid derivatives which in turn are gastric anti-secretory agents for treatment of peptic ulcer disease and generally anti-allergic agents useful in the treatment of atopic immediate hypersensitivity reactions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.