Add time:08/07/2019         Source:sciencedirect.com

17(20)-dehydro-23,24-dinorcholan-22-oic acids, derived from natural sterols are converted with H2O2 in the presence of molybdate or tungstate ions into 16-unsaturated 20-oxo-pregnanes, which are useful intermediates of corticosteroid hormones and drugs.

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