76692-72-3Relevant academic research and scientific papers
Constituents of Geranium thunbergii Sieb. et Zucc. XV. Modified dehydroellagitannins, geraniinic acids B and C, and phyllanthusiin F
Ito, Hideyuki,Hatano, Tsutomu
, p. 1148 - 1151 (1999)
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 Phyllanthus species of Euphorbiaceae, were also isolated from this plant.
Tannins and Related Compounds. LXXXVII. Isolation and Characterization of Four New Hydrolyzable Tannins from the Leaves of Mallotus repandus
Saijo, Reiko,Nonaka, Gen-ichiro,Nishioka, Itsuo
, p. 2624 - 2630 (2007/10/02)
A chemical examination of the leaves of Mallotus repandus (WILLD.) MUELLER-ARG. (Euphorbiaceae) has led to the isolation of four new hydrolyzable tannins, named repandusinin (10), repandusinic acids A (11a) and B (14a) (as monopotassium salts) and malloti
PUNICAFOLIN, AN ELLAGITANNIN FROM THE LEAVES OF PUNICA GRANATUM
Tanaka, Takashi,Nonaka, Gen-Ichiro,Nishioka, Itsuo
, p. 2075 - 2078 (2007/10/02)
A new ellagitannin, punicafolin has been isolated from the leaves of Punica granatum and characterized by physicochemical data and spectral evidence as 1,2,4-tri-O-galloyl-3,6-(R)-hexahydroxydiphenoyl-β-D-glucose.The occurrence in the leaves of the known tannins, granatins A and B, corilagin, strictinin, 1,2,4,6-tetra-O-galloyl-β-D-glucose and 1,2,3,4,6-penta-O-galloyl-β-D-glucose has also been demonstrated.Key Word Index -Punica granatum; Punicaceae; pomegranate; punicafolin; ellagitannin; gallotannin.
The Metabolism of Gallic Acid and Hexahydroxydiphenic Acid in Plants. Part 3. Esters of (R)- and (S)-Hexahydroxydiphenic Acid and Dehydrohexahydroxydiphenic acid with D-Glucopyranose (1C4 and Related Conformations)
Haddock, Elizabeth A.,Gupta, Raj K.,Haslam, Edwin
, p. 2535 - 2546 (2007/10/02)
In a small group of plants a process of further metabolism of galloyl-D-glucose esters occurs in which oxidative coupling takes place between galloyl ester groups in the 1,6:2,4 or 3,6-position of D-glucopyranose in its least favoured 1C4
