title: Preparation and isomerization of 5-epibenzylpenicillins.
mesh_terms: D004952:Esters; D007536:Isomerism; D008722:Methods; D010400:Penicillin G / Q000031:analogs & derivatives* / Q000138:chemical synthesis
chemical_list: D004952:Esters; D010400:Penicillin G