Cyclization of 13beta-ethyl-3-methoxy-17beta-ol-8,14-seco-1,3,5(10),9-gonatetraen-14-one and its 17 acetate derivative.
13beta-Ethyl-3-methoxy-17beta-ol-8,14-seco-1,3,5(10),8-gonatetraen-14-one (IIIa) was isolated and its participation in the well-known acidic cyclization process was established.
D000085:Acetates / Q000138:chemical synthesis; D055598:Chemical Phenomena; D002621:Chemistry; D002855:Chromatography, Thin Layer; D003500:Cyclization; D006067:Gonanes / Q000138:chemical synthesis; D007700:Kinetics; D009682:Magnetic Resonance Spectroscopy; D012632:Secosteroids; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
D000085:Acetates; D006067:Gonanes; D012632:Secosteroids