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A facile and efficient asymmetric synthesis of glutinone 1 and its C(7) and C(11) epimers 1b-d is presented, using the Sharpless asymmetric dihydroxylation reaction as the key step. By comparing the spectral data of the natural product with that of the synthetic samples, we could confirm the absolute configuration of glutinone 1.
Two approaches for the enantioselective syntheses of naturally occurring kudtriol 2a and 5-epi-kudtriol 3a as well as their C-11 epimers are presented, both using the Sharpless asymmetric dihydroxylation as the key reaction. Through comparison of the spectral data of natural triols and synthetic samples, we could confirm the absolute configuration of the natural triols.
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