title: Preparation and stereochemical analysis of 5-epibenzylpenicillin (S)- and (R)-sulfoxide esters.
mesh_terms: D008722:Methods; D010400:Penicillin G / Q000031:analogs & derivatives* / Q000138:chemical synthesis; D013237:Stereoisomerism; D013454:Sulfoxides / Q000138:chemical synthesis
chemical_list: D013454:Sulfoxides; D010400:Penicillin G