Cephem compounds
US4463000A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1981 |
| Grant date | Jul 31, 1984 |
| Priority date | — |
| Expiry date | Aug 19, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D295/21
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to novel 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 which may be substituted with suitable substituents(s), cyclo(lower)alkyl or cyclo(lower)alkenyl; and PA1 R.sup.3 is a thiazolio group which may be substituted with suitable substituents(s) or a pyridinio group substituted with substituent(s) selected from the group consisting of halogen, cyano, hydroxy, amino, acylamino, lower alkanoyl, hydroxycarbamoyl, alkylcarbamoyl, carboxy, protected carboxy, lower alkyl, hydroxy(lower)alkyl, sulfo(lower)alkyl, protected amino(lower)alkyl, amino(lower)alkyl, carboxy(lower)alkyl and hydroxyimino(lower)alkyl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.