Abstract:
Ar is optionally substituted with 1 to 3 Rgroups, and where n is 0, 1, 2 or 3; and a group of formula III: herein: Ris selected from hydrogen; and straight or branched alkyl; Ris selected from hydrogen; straight, branched, unsaturated or alicyclic alkyl, optionally substituted with 1 to 3 Rgroups, where the alkyl group is optionally interrupted by X, where X is selected from O, S, NH and N(COCH); allyloxy and 9-fluorenylmethyloxy; and (CH)Ar, where Ar is selected from phenyl, furanyl, thienyl, pyridyl, naphthyl, biphenyl, dibenzofuranyl, dibenzothienyl, fluorenyl and fluorenonyl, where n is 0, 1, 2 or 3, and where Ar is optionally substituted with 1 to 3 Rgroups; and Ris selected from OR, CN, C(O)NH, C(O)NHR, C(O)N(R), OC(O)NH, OC(O)R, CHO, SONH, SOR, CF, C(O)R, COOR, F, Cl, Br, I, OCHPh, NHR, N(R),, NHCOR, NHCOt-Bu, NHCOallyl, NH, and R, where R is hydrogen, Cto Calkyl, or aryl. The invention is further directed to a pharmaceutical composition containing the compound, as well as a method for treating bacterial infections in animals or humans, wherein the composition can be administered in combination with a -lactam antibiotic.