作者:Y. Ohsawa、S. Ohba、S. Kosemura、S. Yamamura、A. Nakagawa、K. Yoshida、T. Kondo
DOI:10.1107/s0108270193009631
日期:1994.4.15
Flavocommelin, 6-beta-D-glucopyranosyl-2-[4-(beta-D-glu-copyranosyloxy)phenyl]-5-hydroxy-7-methoxy-4H-1-benzopyran-4-one, is a flavonoid component of a blue pigment, commelin, which is isolated from the petals of Commelina communis. The crystal structure of the octaacetate derivative, 5-hydroxy-7-methoxy-6-(3,4,5,6-tetra-O-acetyl-beta-D-glucopyranosyl)-2-[4-(3,4,5,6-tetra-O-acetyl-beta-D-glucopyranosyloxy)-phenyl]-4H-1-benzopyran-4-one, C44H48O23, has been determined by X-ray diffraction. In the crystal, the molecules are arranged parallel to each other according to the periodicity of the crystal lattice. However, intermolecular stacking of the flavanone skeletons is not observed. This suggests that the hydrophilicity of the glucose moieties is one of the important factors governing the self association.