Add time:08/21/2019         Source:sciencedirect.com

Manwuweizic acid (1), an anticancer triterpenoid isolated from Scisandra propinqua, was synthesized from lanosterol (2) by stereoselective introduction of the (Z) α,β-unsaturated carboxylic terminal of the side chain and by abnormal Beckmann rearrangement of ring A. A new reagent of DMSO-DCC-TFA for protection of a carboxyl group as a methylthiomethyl (MTM) ester is also described.

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