反应条件
1: TsOH / diethyl ether; dioxane 2: (i) NBS, Py, AcOH, aq. NaOAc, acetone, (ii) CaCO3, DMF 3: Py, Ac2O / Heating 4: aq. NaBH4 / methanol; tetrahydrofuran 5: cyclohexanone, Al(OiPr)3 / toluene 6: aq. ethanol / (microbiological transformation) View Scheme
参考文献
Zderic,J.A. et al.
Steroids, 1963 , vol. 1, p. 233 - 249