82203-12-1Relevant academic research and scientific papers
TAXIFOLIN APIOSIDE AND DAVURICIIN M1, A HYDROLYSABLE TANNIN FROM ROSA DAVURICA
Yoshida, Takashi,Jin, Zhe Xiong,Okuda, Takuo
, p. 2177 - 2182 (2007/10/02)
Key Word Index - Rosa davurica; Rosaceae; (+)-taxifolin-3-O-β-D-apio-D-furanoside; dihydroflavonol apioside; tannin; davuriciin M1; ellagitannin.Abstract - The structure of a dihydroflavonol glycoside from the roots of Rosa davurica has been characterized as (+)-taxifolin-3-O-β-D-apio-D-furanoside. A new hydrolysable tannin, davuriciin M1, together with three known hydrolysable tannins, have also been isolated.The structure of new tannin was elucidated by spectroscopic and chemical methods.
Tannins and Related Compounds. Part 3. A New Phenolic Acid, Sanguisorbic Acid Dilactone, and Three New Ellagitannins, Sanguiins H-1, H-2, and H-3, from Sanguisorba officinalis
Nonaka, Gen-ichiro,Tanaka, Takashi,Nishioka, Itsuo
, p. 1067 - 1074 (2007/10/02)
A new phenolic acid, sanguisorbic acid dilactone, and three new ellagitannins, sanguiins H-1, H-2, and H-3, have been isolated from the underground parts of Sanguisorba officinalis L. (Rosaceae).On the basis of chemical and spectroscopic evidence, sanguisorbic acid dilactone has been shown to possess a trimeric gallic acid structure and to be a structural isomer of valoneaic acid dilactone.Similarly, sanguiins H-1 and H-2 have been characterized as 1,6-digalloyl-2,3-(4,4',5,5',6,6'-hexahydroxydiphenoyl)glucose and 1-galloyl-2,4-(4,4',5,5',6,6'-hexahydroxydiphenoyl)-3,6-sanguisorboylglucose, respectively.Sanguiin H-3 has been shown mainly by spectroscopic data and analyses of partial hydrolysates to have a novel dimeric structure containing 2,3-(hexahydroxydiphenoyl)glucose and sanguiin H-2 moieties.
