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(2014/05/20)1,3,6,7-tetra-O-acetyl-2-C-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)xanthone
benzyl bromide
1-O-acetyl-2-C-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-3,6-di-O-benzyl-7-O-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)xanthone
1-O-acetyl-2-C-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-3,6-di-O-benzyl-7-hydroxyxanthone
1,7-dihydroxy-2-C-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-3,6-di-O-benzylxanthone