反应详情

Dissolve dl-13-ethyl-3-methoxy-6-methyl-17α-ethynyl-17-hydroxygona-2,5(10)-diene (3.5 g) in methanol (90 ml) containing concentrated hydrochloric acid (6.0 ml) and water (4.0 ml). Stir the solution under nitrogen for 1 hour. Work up in the usual fashion. Chromatograph on Florex (150 g), then recrystallize from ether-hexane to obtain dl-13-ethyl-17α-ethynyl-17-hydroxy-6α-methylgon-4-en-3-one (0.60 g), m.p. 148°-151°; ultraviolet absorption peak at 240 mμ (ε15,300), infrared maxima (chloroform) at 2.55 μ, 3.05 μ, 6.01 μ.

1. customChromatograph on Florex (150 g), then recrystallize from ether-hexane