Diethyl Ether → 17-hydroxy-3-methoxy-14,15-methylenestra-1,3,5(a)-trien

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Reaction Steps

100 mg of 3-methoxy-14α,15α-methylene-estra-1,3,5-(10)-triene-17-one dissolved in 12 ml of absolute tetrahydrofuran are mixed with 100 mg of lithium aluminum hydride at 0° C. and set aside for 1.5 hours at room temperature. After adding ethyl acetate and ether the product is washed with saturated aqueous ammonium chloride solution and water, and the organic layer is separated, followed by drying with sodium sulphate and evaporating under vacuum. After preparative layer chromatography on silica gel (mobile phase: benzene/acetone/methanol 45:5:1) the residue yields 60 mg of 3-methoxy-14α,15α-methylene-estra-1,3,5(10)-triene-17α-ol and 26 mg of 3-methoxy-14α,15α-methylene-estra-1,3,5(10)-triene-17β-ol.

Provenance & Evidence