Recent Chemical Advances in C-Glycosidic Ellagitannins.
C-Glycosidic ellagitannins are a complex subclass of hydrolyzable tannins characterized by a carbon-carbon bond between the C-1 position of an open-chain d-glucose core and a hexahydroxydiphenoyl unit. Their architectures, featuring densely packed oxygen functionalities, multiple axes of chirality, and unique C-glycosi...