Thio-.beta.-lactam cephalosporins
US3971780A · kind A · utility
4Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1975 |
| Grant date | Jul 27, 1976 |
| Priority date | — |
| Expiry date | Feb 19, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D501/18
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Thio-.beta.-lactam cephalosporins of the general formula ##SPC1## Wherein R is hydrogen, lower alkyl, phenyl-lower alkyl, trihaloethyl, alkali metal or alkaline earth metal; R.sub.1 is hydrogen, lower alkyl, cycloalkyl, phenyl, phenoxy, phenyl-lower alkyl or certain heterocyclic groups; R.sub.2 is hydrogen, amino, carboxy, hydroxy or ureido; and X is hydrogen, hydroxy, lower alkylthio, lower alkylthiadiazolyl, lower alkyltetrazolyl or lower alkanoyloxy, are useful as antimicrobial agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.