Intermediates for preparing .alpha.-carboxy-.alpha.-(3-thienyl)penicillin and cephalosporin derivatives
US4066664A · kind A · utility
1Cited by
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4Claims
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Key dates
| Filing date | Sep 27, 1976 |
| Grant date | Jan 3, 1978 |
| Priority date | — |
| Expiry date | Sep 27, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D499/72
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A new process is disclosed for the preparation of alpha-carboxy-alpha-phenyl(or 3-thienyl)penicillin and cephalosporin derivatives. The process comprises reacting a 1.3-dioxane-4.6-dione derivative with the desired penicillanic or cephalosporanic acid derivative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.