20-(1,3-Dioxolan-2-yl)-3beta-(methoxymethyl)oxypregna-5,7-dien-1alpha-ol → 1alpha-Hydroxy-3beta-(methoxymethyl)oxypregna-5,7-diene-20-carbaldehyde

Participants

Reaction Steps

The reaction and workup procedures of Example 156 were repeated except that 100 mg of 20-(1,3-dioxolan-2-yl)-3β-(methoxymethyl)oxypregna-5,7-dien-1α-ol was used in lieu of 100 mg of 20-(5,5-dimethyl-1,3-dioxan-2-yl)-1α,3β-bis(methoxycarbonyloxy)pregna-5,7-diene to give 53 mg of 1α-hydroxy-3β-(methoxymethyl)oxypregna-5,7-diene-20-carbaldehyde showing the following physical properties.

Provenance & Evidence