A highly enantio- and diastereoselective synthesis of an alpha-L-aculose, alpha-L-rhodinose, and beta-D-olivose trisaccharide is described. The key transformations include the palladium-catalyzed glycosylation, Myers' reductive rearrangement, diastereoselective dihydroxylation, and regioselective Mitsunobu inversion. Significant apoptotic antitumor activity was found for this trisaccharide, which has implication for vineomycin B2 and PI-080 structure-activity relationship.
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Yu et al. (2008) studied this question.
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