Experiments on the synthesis of tetracycline. 3. Michael-type cyclisation in the formation of ring B.
D055598:Chemical Phenomena; D002621:Chemistry; D003500:Cyclization; D004987:Ethers; D007259:Infrared Rays; D009682:Magnetic Resonance Spectroscopy; D009279:Naphthacenes / Q000138:chemical synthesis; D009281:Naphthalenes; D011714:Pyrans; D013057:Spectrum Analysis; D013752:Tetracycline / Q000138:chemical synthesis*; D014466:Ultraviolet Rays
D004987:Ethers; D009279:Naphthacenes; D009281:Naphthalenes; D011714:Pyrans; D013752:Tetracycline