STUDIES ON THE CHEMI CAL CONSTITUENTS OF LIRIOPE SPICATA LOUR(THUNB). VAR. PROLIFERA Y.T. MA.

From the methanol extract of the roots of Liriope spicata Lour (Thunb) var.prolifera Y.T.Ma (Liliaceae) cultivated in Hubei province (China) four steroidal glycorides, tentatively named glycoside Ⅰ, Ⅱ, Ⅲ and Ⅳ,were isolated. On the basis of chemical evidences, IR, EI-MS, FABMS, ¹HNMR and ¹³CNMR analysis, structures of these glycosides were elucidated and identified as β-sitosterol(major) and stigmasterol (minor) -β-D-glucopyranoside (glycoside Ⅰ) , 25 (S)-ruscogenin 1-O-β-D-fucopyranosido3-O-α-L-rhamnopyranoside (glycoside Ⅱ), 25(S)-ruscogenin 1-O-α-L-rhamnopyranosyl (1→2)-β-D-xylopyranoside (glycoside Ⅲ) and25 (S)-ruscogenin 1-O- α-L-rhamnopyranosyl(1→2)β-D-xylopyra-nosyl(1→3) -β-D-fucopyranoside (glycoside Ⅳ), in which both glycoside Ⅲ and glycoside Ⅳ are new steroidal saponins.