| Abstract
| - tert-Butyl hydroperoxide catalyzed by (5,10,15,20-tetramesitylporphyrinate) osmium(II) carbonyl [Os(TMP)CO] complex was found to be a highly efficient versatile oxidant for C−H carbons in steroidsubstrates. When reacted with representative steroids with an estrane, pregnane, 5β-cholane, or5α-cholestane structure, regioselective oxyfunctionalization and/or oxidative degradation occurred to givea variety of novel and uncommon derivatives in one step.
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