(N-ALKYLCARBAMOYL)METHYL ENULOSIDES AND RELATED PYRANOSIDE CONTAINING AN ALFA, BETA, GAMA, DELTA - UNSATURATED ESTER, THEIR PREPARATION AND THEIR EFFICACY AS ANTIBACTERIAL AGENTS

摘要

The present invention comprises compounds of formula (I) and (II), embodying a 3-enopyranosid-2-ulose system and compound of formula (III), presenting a pyranoid a,ß,?, g,d- unsaturated ester skeleton, derived from compound of formula (IV); processes for their preparation and their use as antibacterial agents.