20-(1,3-Dioxolan-2-yl)-pregna-5,7-diene-1alpha,3beta-diol → 1alpha,3beta-Dihydroxypregna-5,7-diene-20-carbaldehyde

Participants

Reaction Steps

The procedure of Example 25 was repeated except that 3.9 mg (0.010 mole) of 20-(1,3-dioxolan-2-yl)pregna-5,7-diene-1α,3β-diol was used in lieu of 4.3 mg of 20-(5,5-dimethyl-1,3-dioxan-2-yl)pregna-5,7-diene-1α,3β-diol to give 2.7 mg of 1α,3β-dihydroxypregna-5,7-diene-20-carbaldehyde (yield: 78%).

Provenance & Evidence