Constituents of Geranium thunbergii SIEB. et ZUCC. XV. Modified Dehydroellagitannins, Geraniinic Acids B and C, and Phyllanthusiin F

Hideyuki ITO; Tsutomu HATANO; Osamu NAMBA; Tadashi SHIRONO; Takuo OKUDA; Takashi YOSHIDA

doi:10.1248/cpb.47.1148

Hideyuki ITO, Tsutomu HATANO, Osamu NAMBA, Tadashi SHIRONO, Takuo OKUDA, Takashi YOSHIDA

Author information

Keywords: Geranium thunbergii, Geraniaceae, geraniinic acid B, geraniinic acid C, phyllanthusiin F, modified dehydroellagitannin

JOURNAL FREE ACCESS

1999 Volume 47 Issue 8 Pages 1148-1151

DOI https://doi.org/10.1248/cpb.47.1148

Details

Abstract

Three new hydrolyzable tannins, geraniinic acids B and C, and phyllanthusiin F, were isolated from the water-soluble portion of 70% aqueous acetone homogenate of the Geranium thunbergii leaves and their structures were determined by spectroscopic and chemical methods. These tannins are regarded as modified metabolites of geraniin, a major component of this plant. Phyllanthusiins, which are tannins characteristic of the Pyrllanthus species of Euphorbiaceae, were also isolated from this plant.

Corresponding author

Register with J-STAGE for free!