Cephem compounds
US4495182A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 1982 |
| Grant date | Jan 22, 1985 |
| Priority date | — |
| Expiry date | May 27, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D285/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to cephem compounds of high antimicrobial activity of the formula ##STR1## wherein R.sup.1 is amino or a protected amino group; PA1 R.sup.2 is hydrogen, lower aliphatic hydrocarbon group selected from lower alkyl, alkenyl and alkynyl which may be substituted with carboxy, protected carboxy, lower alkylthio or phenyl, cyclo(lower)alkyl, or cyclo(lower)alkenyl; PA1 R.sup.3 is lower alkyl which may be substituted with carboxy, carbamoyl, hydroxy, amino or protected amino; PA1 R.sup.3a is hydrogen, lower alkyl or amino; and PA1 R.sup.3b is hydrogen or lower alkyl; and PA1 pharmaceutically acceptable salts thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.