Experiments on the synthesis of tetracycline. IV. Ring B formation through 1,3-dipolar additions.
D055598:Chemical Phenomena; D002621:Chemistry; D003500:Cyclization; D004988:Ethers, Cyclic; D005663:Furans; D007259:Infrared Rays; D009682:Magnetic Resonance Spectroscopy; D009279:Naphthacenes; D009281:Naphthalenes; D010084:Oxidation-Reduction; D013057:Spectrum Analysis; D013752:Tetracycline / Q000138:chemical synthesis*; D014466:Ultraviolet Rays
D004988:Ethers, Cyclic; D005663:Furans; D009279:Naphthacenes; D009281:Naphthalenes; D013752:Tetracycline