Sinensioside A, a new sesquilignan glycoside from Selaginella sinensis.

Abstract Aim To investigate the chemical constituents of Selaginella sinensis (Desv.) Spring. Methods Chromatographic separations on Diaion HP-20, silica gel, and Sephadex LH-20 were used. The structures of the isolates were elucidated on the basis of spectroscopic analysis, as well as chemical methods. Results Eight compounds were obtained and their structures were identified as sinensioside A ( 1 ), syringaresinol-4- O-β -D-glucopyranoside ( 2 ), (+)-medioresinol-4- O-β -D-glucopyranoside ( 3 ), pinoresinol-4, 4′-di- O-β -D-glucopyranoside ( 4 ), quercetin ( 5 ), eucomic acid ( 6 ), shikimic acid ( 7 ), and 2, 3-dihydroamentoflavone ( 8 ). Conclusion Compound 1 is a new dihydrobenzofuran sesquilignan glycoside from Selaginella sinensis .