Abstract
Treatment of a acetylated furostanols derived from steroid sapogenins with a wet mixture of KMnO4 and Fe2(SO4)3.nH2O in CH2Cl2/tert-butyl alcohol produces the unexpected E-ring oxidative cleavage to afford the corresponding cholestan-22,16-diones. Based in this new reaction, facile syntheses of an OSW-1 precursor and kryptogenin acetate have been designed.
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