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A. Conversion of isosteviol (36) to ent-atisane and ent-trachylobane products via site-selective C12 hydroxylation and carbocationic rearrangements. B. Further site-selective oxidations of 38 using PtmO6 and BM3 MERO1 M177A. C. Divergent chemoenzymatic total synthesis of the mitrephorones starting from 40. See Supplementary Materials for reaction conditions.
