title: Preparation of an optically active intermediate for the synthesis of prostaglandins.
mesh_terms: D007783:Lactones / Q000032:analysis / Q000138:chemical synthesis*; D008722:Methods; D009904:Optical Rotation; D011453:Prostaglandins / Q000138:chemical synthesis*
chemical_list: D007783:Lactones; D011453:Prostaglandins