Method for preparing 7-substituted cephalosporins and 6-substituted penicillins by replacement of sulfur-containing groups
US4062842A · kind A · utility
6Cited by
1References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1976 |
| Grant date | Dec 13, 1977 |
| Priority date | — |
| Expiry date | Jan 19, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D501/57
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a method for replacing 7-lower alkylthio and 7-arylthio groups from cephalosporins with lower alkanoyloxy,lower alkoxy, aryloxy, aroyloxy, amino, lower alkylamino and azido moieties, and for replacing 6-lower alkylthio and 6-arylthio groups from penicillins with lower alkanoyloxy, lower alkoxy, aryloxy, aroyloxy, amino, lower alkyl amino, and azido moieties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.