Total syntheses of (+)- and (−)-1,3,4,5-tetragalloylapiitol and revision of absolute configuration of naturally occurring (−)-1,3,4,5-tetragalloylapiitol
2011
Abstract The total syntheses of (+)- and (−)-1,3,4,5-tetragalloylapiitol were achieved in seven steps from d - and l -ribose, respectively. By comparing the optical rotations of both enantiomers with those of the natural product, the absolute configuration at C-3 in the naturally occurring 1,3,4,5-tetragalloylapiitol has been revised to R . The absolute configurations at C-3 in the synthetic (+)- and (−)-1,3,4,5-tetragalloylapiitol were further confirmed by the circular dichroism exciton chirality method.
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