2002 Volume 50 Issue 9 Pages 1245-1249
Two new eucosterol oligoglycosides, 15-deoxo-30-hydroxyeucosterol 3-O-α-L-rhamnopyranosyl-(1→2)-[(β-D-glucopyranosyl-(1→3)]-β-D-glucopyranosyl-(1→2)-α-L-arabinopyranosyl-(1→6)-β-D-glucopyranoside (scillanoside L-1, 1) and 3β,31-dihydroxy-17α,23-epoxy-5α-lanost-8-en-23,26-olactone 3-O-α-L-rhamnopyranosyl-(1→2)-[β-D-glucopyranosyl-(1→3)]-β-D-glucopyranosyl-(1→2)-α-L-arabinopyranosyl-(1→6)-β-D-glucopyranoside (scillanoside L-2, 2), were isolated from the bulbs of Scilla scilloides, together with four that were known (3—6), have been isolated from the bulbs of Scilla scilloides. The structures of the new compounds were determined on the basis of spectroscopic and chromatographic methods, and some chemical transformations were discussed. Amongst the isolated compounds, 3 showed the most significant cytotoxicity against tumor cells tested several types with ED50 value of 1.53—3.06 nM. In vivo experiments, 3 apparently increased the life span of mice bearing Sarcoma 180 tumor cell with T/C value of 239% at dose of 3 mg/kg.