Synthesis and antibacterial activity of new chiral N-sulfamoyloxazolidin-2-ones /FOUZIA BOUCHAREB a , MALIKA BERREDJEM a, ∗ , SAMIRA AIT KAKI b , AMEL BOUARICHA b , ABDESLEM BOUZINA a , BILLEL BELHANI a and NOUR-EDDINE AOUF a - BOUCHAREB,FOUZIA