Heterocyclic compounds having antibacterial activity: process for their preparation and pharmaceutical compositions containing them

123123The present invention relates to novel oxazolidinone compounds of the general formula (I). where R, R, R, Y, Y, Y, and Z are as defined in the description; their derivatives, their analogs, their tautomeric forms, their stereoisomers, their polymorphs, their pharmaceutically acceptable salts, their pharmaceutically acceptable solvates and pharmaceutical compositions containing them.