Scheme 1.
Synthesis of dehydroepiandrosterone derivatives.
a: H2O2, 5%NaOH/MeOH, MeOH, rt, b: m-CPBA, CHCl3, rt, c: DDQ, dioxane, reflux, d: NaBH4, absolute ethanol, rt, e: Li, absolute ethanol, THF, rt.
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