abstract |
THIS INVENTION IS CONCERNED WITH THE PREPARATION OF CYCLOPENTENE - 1,1 - DICARBOXAMIDES; 1,3-DIAZASPIRO (4,4) NONENE-2,4 - DIONES; 1 - AMINOCYCLOPENTENE-1-CARBOXYLIC ACIDS; 1-(N - ALKYLAMINO) CYCLOPENTENE - 1 - CARBOXYLIC ACIDS; AND 3-OXA-1-AZASPIRO (4,4) NONENE-2,4-DIONES WHICH ARE INTERMEDIATE IN THE PREPARATION OF 6-(1-AMINOCYCLOPENTENE-1-CARBOXAMIDO) PENICILLANIC ACIDS WHICH ARE USEFUL ANTIBACTERIAL AGENTS. |