title: C 8  epimeric 10,11-anhydroerythromycins A and the C 8  epimeric 11,12-epoxyerythromycins A.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D003500:Cyclization; D004917:Erythromycin; D004988:Ethers, Cyclic; D007536:Isomerism
chemical_list: D004988:Ethers, Cyclic; D004917:Erythromycin