2.beta.-Substituted-methylpenicillanic acid derivatives, and salts and esters thereof
US4891369A · kind A · utility
5Cited by
3References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1987 |
| Grant date | Jan 2, 1990 |
| Priority date | — |
| Expiry date | Nov 23, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed are 2.beta.-substituted-methylpenicillanic acid compounds of the formula ##STR1## wherein n is 0, 1 or 2; and ##STR2## is monocyclic or bicyclic heterocyclic ring group which has 2 to 4 nitrogen atoms as hetero atom in its ring structure and which may be optionally substituted with alkyl, alkoxycarbonyl, phenyl, formyl or benzyloxycarbonyl optionally having alkyl, nitro or a halogen atom on the benzene ring, with the proviso that said heterocyclic ring group is not 1,2,3-triazol-1-yl; or salts or esters thereof. These compounds are useful as .beta.-lactamase inhibitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.