Steroidal saponins from Polygonatum polyanthemum rhizomes
We reported previously  on the isolation from rhizomes of Polygonatum polyanthemum (Bieb.) A. Dietr. (Convallariaceae) of five sapogenins. Herein we communicate results of a structural study of six steroidal glycosides from this plant.
Air-dried raw material (400 g) was extracted exhaustively with hot MeOH to produce total saponins that were condensed to a resinous state and then suspended in H2O by vigorous stirring. The supernatant liquid was removed. The insoluble precipitate was separated by repeated chromatography over columns of silica gel into four pure compounds that were called 1–4 in order of increasing polarity. They were spirostanol compounds according to color reactions  and IR spectroscopic data.
The supernatant liquid was extracted with n-BuOH. The solvent was evaporated to dryness. The residue was dissolved in EtOH. Glycosides were precipitated by Me2CO to isolate another two glycosides 5 and 6 that were furostanol glycosides according to a color reaction  and...
KeywordsGlycoside Diosgenin Dioscin Furostanol Deoxyhexose
- 1.L. N. Gvazava and V. S. Kikoladze, Khim. Prir. Soedin., 811 (2012).Google Scholar
- 2.Thin-Layer Chromatography [in Russian], E. Shtal, ed., Moscow, 1965, 491 pp.Google Scholar
- 3.C. Sannie, S. Heitz, and H. Lapin, Compt. rend., 233, 1670 (1951).Google Scholar
- 4.S. Hakomori, J. Biochem. (Tokyo, Jpn.), 55, 205 (1964).Google Scholar