Cephalosporin intermediates
US4060688A · kind A · utility
11Cited by
5References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 6, 1975 |
| Grant date | Nov 29, 1977 |
| Priority date | — |
| Expiry date | Jun 6, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D501/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
3-Exomethylenecepham and 3-hydroxy-3-cephem sulfoxides represented by the formulas ##STR1## wherein R is an acyl group derived from a carboxylic acid and R.sub.1 is a carboxylic acid protecting group, are useful intermediates in the synthesis of 3-alkoxy-3-cephem, 3-chloro-3-cephem and 3-methyl-3-cephem antibiotic compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.