Ampicillin derivatives substituted by heterocyclic acyl group
US3953428A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 1973 |
| Grant date | Apr 27, 1976 |
| Priority date | — |
| Expiry date | May 1, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D499/68
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The ampicillin derivatives represented by the general formula ##SPC1## Wherein R represents ##SPC2## Wherein R' represents a hydrogen atom, a methyl group, or an ethyl group and A and B each represents a hydrogen atom, a hydroxyl group, a methyl group, a methoxy group, a nitro group, or a halogen atom and further said B may combine with A on the carbon atom at the position to form ##SPC3## Group (where in Z represents --CH=N-- or --CH=CH-- and an R.sup.2 represents a hydrogen atom, a hydroxyl group, a phenyl group, a methyl group, an ethyl group, a methoxy group, an ethoxyl group, a methylthio group, a trifluoromethyl group, a halogen atom, a nitro group, an acetyl group, an acetamido group, a ethoxycarbonyloxy group, or a methylsulfonyl group and further R.sub.2 and ##SPC4## May form a thiazole, isothiazolo, pyrrolo, furo, or benzo fused ring which may be substituted by an oxo group, a methyl group, or an acetyl group) and the dotted line means an arbitrary double bond, ##SPC5## Wherein R.sup.3 and R.sup.4 each represents a hydrogen atom or a methyl group, ##SPC6## Wherein R.sup.5 represents a halogen atom, a methoxy group, a nitro group, or a hydroxyl group and R.sup.6 represents…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.