136142-36-4Relevant academic research and scientific papers
Tannins and related compounds. CIX. Isolation of alienanins A and B, novel C,C-linked ellagitannin dimers from Quercus aliena Blume
Nonaka,Sakai,Mihashi,Nishioka
, p. 884 - 888 (1991)
Two novel hydrolyzable tannins, alienanins A (5) and B (13), have been isolated from the leaves of Quercus aliena Blume (Fagaceae), and their structures were elucidated on the basis of chemical and spectroscopic evidence to be dimeric C-glycosidic ellagitannins in which the hexahydroxydiphenoyl ester group is linked to the C-glycosidic C-1 atom through a carbon to carbon linkage. In addition, the structure elucidation of the monomeric C-glycosidic ellagitannin, epipunicacortein A (1), is also described briefly.
