Thioloesters
US4385181A · kind A · utility
15Cited by
0References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1981 |
| Grant date | May 24, 1983 |
| Priority date | — |
| Expiry date | Feb 10, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D501/24
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
New thioloesters of the formula: ##STR1## wherein R.degree. represents hydrogen, alkyl, vinyl, cyanomethyl or a protecting radical, R' represents hydrogen or a protecting radical, R represents alkyl, L-2-amino-2-carboxyethyl, phenyl or various heterocyclic radicals, and their syn and anti isomers and mixtures thereof, and metal salts thereof and addition salts thereof with tertiary nitrogen-containing bases, are intermediates useful in the preparation of cephalosporins having anti-bacterial properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.