PHENOL GLUCOSIDE GALLATES FROM MALLOTUS JAPONICUS

Article abstract of DOI:10.1016/S0031-9422(00)98001-4

Five phenol glucoside gallates were isolated from Mallotus japonicus, and their structures characterized by chemical and spectroscopic means as 4-hydroxy-2-methoxyphenol 1-O-β-D-(6'-galloyl)glucoside, 4-hydroxy-3-methoxyhenol 1-O-β-D-(2',6'-di-O-galloyl)glucoside, 4-hydroxy-3-methoxyphenol 1-O-β-D-(2',3',6'-tri-O-galloyl)glucoside, 3,4,5-trimetoxyphenol 1-O-β-D-(2',6'-di-O-galloyl)glucoside and 4-hydroxy-2,6-dimetoxyphenol 1-O-β-D-(6'-O-galloyl)glucoside.In addition, the occurence of several flavan-3-ols and prodelphinidins was demonstrated.Key word Index-Mallotus japonicus, Euphorbiaceae; phenol glucoside gallates; 4-hydroxy-2-methoxyphenol; 4-hydroxy-3-methoxyphenol; 3,4,5-trimethoxyphenol; 2,6-dimethoxy-4-hydroxyphenol.