Cephalosporin compounds
US4563523A · kind A · utility
0Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 19, 1982 |
| Grant date | Jan 7, 1986 |
| Priority date | — |
| Expiry date | Jul 19, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D501/40
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to the novel compound (6R,7R)-7-(D-5-benzamido-5-carboxypentanamido)-3-(1-pyridiniummethyl)-ceph -3-em-4-carboxylate and salts thereof, which may be prepared in substantially pure form. The novel compounds are useful for the preparation of (6R,7R)-7-amino-3-(1-pyridiniummethyl)ceph-3-em-4-carboxylate or salts thereof, which are themselves useful for the preparation of 7-substituted 3-pyridiniummethyl cephalosporin antibiotics such as ceftazidime and cephaloridine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.