The substitution of the triflate group of (I) by the sodium thiolate (II) provided a mixture of 3-cephem (III) and 2-cephem (IV) compounds. Without purification, treatment of the mixture with m-chloroperbenzoic acid gave the corresponding S-oxides, which were reduced with PCl3 to yield the 3-cephem (III). The phenylacetyl group was removed by treatment with PCl5 and pyridine, followed by hydrolysis with MeOH to afford amine (V). Acylation with acid (VI) in the presence of dicyclohexyl carbodiimide (DCC) and 1-hydroxybenzotriazole (HOBT) yielded amide (VII). Then, removal of the benzhydryl protecting group using trifluoroacetic acid and anisole, followed by treatment with aqueous NaHCO3 provided the target cephalosporin.