7.alpha.-Methoxycephalosporin derivatives and their pharmaceutical compositions having antibacterial activity
US4247548A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1979 |
| Grant date | Jan 27, 1981 |
| Priority date | — |
| Expiry date | Apr 10, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
7.alpha.-Methoxycephalosporin derivatives of general formula (I): ##STR1## wherein: R.sup.1 represents a hydroxy group; a C.sub.1 -C.sub.4 alkoxy group; a C.sub.2 -C.sub.5 aliphatic acyloxy group; a benzoyloxy group which is unsubstituted or has one or more C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, nitro or halogen substituents; a benzenesulphonyloxy group which is unsubstituted or has one or more C.sub.1 -C.sub.4 alkyl substituents; or a C.sub.1 -C.sub.3 alkanesulphonyloxy group which is unsubstituted or has one or more C.sub.1 -C.sub.3 alkoxy, cyano, nitro, halogen or C.sub.2 -C.sub.4 alkoxycarbonyl substituents; PA1 R.sup.2 represents a hydrogen atom, a C.sub.1 -C.sub.4 alkyl group, a halogen atom, a carboxyl group, a C.sub.2 -C.sub.5 alkoxycarbonyl group, a carbamoyl group, an alkylcarbamoyl group in which the alkyl moiety has from 1 to 3 carbon atoms, a di(C.sub.1 -C.sub.3 alkyl)carbamoyl group or a cyano group; PA1 R.sup.3 represents a hydrogen atom; an acetoxy group; a carbamoyloxy group; or a tetrazolylthio, thiadiazolylthio or oxadiazolylthio group which is unsubstituted or has one or more C.sub.1 -C.sub.3 alkyl, sulphomethyl or di(C.sub.1 or C.sub.2 alkyl)amino(C.s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.