Three New Sesquiterpene Glycosides from the Rhizomes of Trillium tschonoskii.

Three new sesquiterpene glycosides, possessing a rare aglycone with a sulfonyl between C-1 and C-15 positions, named 3-(3'-7',8'-dihydroxy-4',8'-dimethyl-3'-nonenyl)-2,5-dihydro-1,1-dioxo-thiophen 7'--β-d-glucopyranosyl-(1→4)--β-d-glucopyranosyl-(1→4)--β-d-glucopyranoside (), 3-(3'-7',8'-dihydroxy-4',8'-dimethyl-3'-nonenyl)-2,5-dihydro-1,1-dioxo-thiophen 7'--β-d-glucopyranosyl-(1→4)--β-d-glucopyranoside (), and 3-(3'-7',8'-dihydroxy-4',8'-dimethyl-3'-nonenyl)-2,5-dihydro-1,1-dioxo-thiophen 7'--β-d-glucopyranosyl-6'--acetyl-(1→4)--β-d-glucopyranosyl-(1→4)--β-d-glucopyranoside (), respectively, were isolated from the rhizomes of . Their structures were established on the basis of spectroscopic data, including HR-ESI-MS, IR, 1D and 2D NMR. The cytotoxic properties of the three compounds were investigated using human hepatic L02 cells.