1-Oxides of Schiff bases of 6-aminopenicillanic acid
US3994912A · kind A · utility
3Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1974 |
| Grant date | Nov 30, 1976 |
| Priority date | — |
| Expiry date | Mar 25, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D499/42
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compounds containing a cephem nucleus are prepared by heating a 1-oxide of a Schiff base of 6-aminopenicillanic acid. These cephem compounds are useful as intermediates in the preparation of physiologically active cephalosporins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.