.beta.-Lactam antibiotics, a process for their preparation and their use in pharmaceutical compositions
US4293501A · kind A · utility
0Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1979 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | Dec 14, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D477/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to sodium, thallium, silver or lithium salts of the compound EQU HS--CH=CHNHC(O).sub.n R.sub.6 wherein n is 1 or 2, R.sub.6 is alkyl, phenyl or substituted phenyl. The salts are useful as reagents for the preparation of sulfur containing Clavulanic acid derivatives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.