6.beta.-substituted penicillanic acids as beta-lactamase inhibitors
US5464616A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1994 |
| Grant date | Nov 7, 1995 |
| Priority date | — |
| Expiry date | Aug 4, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P31/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A 6.beta.-substituted penicillanic acid of the formula XII: ##STR1## or a pharmaceutically acceptable salt or ester thereof, wherein PA1 A and B are each hydrogen wherein the carbon atoms to which A and B are attached are linked by a single bond, or A and B together form a bond, wherein the carbon atoms to which A and B are attached are linked by a double bond, PA1 R1 is selected from the group consisting of a) hydrogen, b) a pharmaceutically acceptable salt and c) a pharmaceutically acceptable group selected from the group consisting of C.sub.1-10 alkyl, C.sub.2-10 alkenyl, C.sub.2-10 alkynyl, C.sub.3-10 cycloalkyl, C.sub.3-10 cycloalkenyl, allyl, aryl, aralkyl, aralkenyl, aralkynyl, heterocyclyl, heterocyclylalkyl, heterocyclylalkenyl, heterocyclylalkynyl and alkylheterocyclyl; wherein said group c) is unsubstituted or substituted with a substituent selected from the group consisting of floro, chloro, bromo, iodo, azido, nitro, monoalkyl substituted amino, dialkyl substituted amino, aryl substituted amino, alkanoylamino, arylcarbonylamino, cyano, hydroxy, alkoxy, aryloxy, alkanoyloxy, arylcarbonyloxy, mercapto, alkylthio, arylthio, alkanoylthio, arylcarbonylthio, oxyimino, alkoxy…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.