Neolignan glycosides from Symplocos caudata

Four optical isomers of 7,9,9′-trihydroxy-3,3′-dimethoxy-8-O-4′-neolignan-4-O-β-d-glucopyranoside, a lignan lactone glycoside, and a phenylpropanoid glycoside were isolated from Symplocos caudata