Heterocyclic-amino-acrylic acid derivatives
US4089858A · kind A · utility
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Key dates
| Filing date | Sep 17, 1975 |
| Grant date | May 16, 1978 |
| Priority date | — |
| Expiry date | Sep 17, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D239/94
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention is concerned with the preparation of chemical intermediates, namely, beta-amino-acrylic acid ester derivatives of nitrogen heterocycles, i.e. pyridine, quinoline, quinoxaline, pyrazine, pyrimidine and the like. Said intermediates are cyclized to form pyrido-pyrimidine type final products possessing analgesic activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.