Add time:08/24/2019         Source:sciencedirect.com

The putative Taxol biosynthesis metabolites, taxa-4(20),11(12)-diene-5α,13α-diol (7), taxa-4(20),11(12)-diene-5α,9α,13α-triol (9), and taxa-4(20),11(12)-diene-5α,10β,13α-triol (10), have been prepared by Barton deoxygenation of the C-9 and C10-hydroxyl groups of protected derivatives of taxusin, a major taxoid metabolite isolated from Yew heart wood. The synthetic protocol devised is amenable for the preparation of isotopically labeled congeners that will be useful to probe further intermediate steps in the biosynthesis of Taxol.

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