Abstract
A simple one-step oxidative functionalizalion of the positions 1, 2, 9 and 10 of 5-O-cinnamoykaxicine I is described. The benzylidene and ethylidene acetals were used as protective groups on the diols 1,2 and 9,10 respectively ; their simultaneous direct conversion into 1-hydroxy-2-benzoyloxy and 9-keto-10-acetoxy derivative was achieved by CrO 3/AcOH or the Jones reagent.
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