Oxathiino- and dithiino-aminoacetic acids
US4071531A · kind A · utility
5Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1975 |
| Grant date | Jan 31, 1978 |
| Priority date | — |
| Expiry date | Sep 26, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12P17/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
New oxathiino- and dithiino-aminoacetic acids of the formula: ##STR1## in which A represents oxygen or sulphur, together with their racemic forms, their optically active forms and mixtures thereof, their reactive derivatives and their acid addition salts, are valuable intermediates for the preparation of therapeutically active derivatives, in particular cephalosporin derivatives of the formula: ##STR2## where R is hydrogen or acetoxy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.