Cephalosporin compounds
US4971962A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1989 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | May 11, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to novel cephalosporin compounds having high antimicrobial activity, which are shown by the formula(I), and to a process for preparing them ##STR1## wherein R.sup.1 is a hydrogen atom or an amino protecting group; PA0 R.sup.2 is acetoxy; and PA0 R.sup.3 is a hydrogen atom or a carboxyl protecting group (wherein when R.sup.2 contains quaternary ammonium, r.sup.2 and R.sup.3 may form a zwitter ion). The present invention also relates to the non-toxic and pharmaceutically acceptable salts of the cephalosporin compounds of the formula (I). Also described are compositions containing the antibiotics according to the present invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.