Steroidal Glycosides from Allium rotundum
We have previously reported  the isolation of seven sapogenins from inflorescences and flower stalks of Allium rotundum (Alliaceae). Herein we present results from structural studies of five steroidal glycosides from this plant.
Exhaustive extraction of air-dried raw material with hot methanol isolated total saponins, which were separated by repeated chromatography into seven pure compounds called in order of increasing polarity glycosides 1–7. According to color reactions  and IR spectroscopy, they were spirostanols.
The structures of the glycosides were elucidated based on chemical transformations and GC, IR, mass, and NMR spectroscopy.
Genin Composition and GC Data for Glycosides 1, 2, 4–6
KeywordsGlycoside Saponin Diosgenin Steroidal Glycoside Double Resonance Experiment
- 1.M. R. Maisashvili, L. I. Eristavi, L. N. Gvazava, and D. M. Gugunishvili, Khim. Prir. Soedin., 626 (2007).Google Scholar
- 2.E. Stahl, ed., Thin-Layer Chromatography: A Laboratory Handbook (translated from the German), Academic, New York (1965).Google Scholar
- 3.S. Hakomori, J. Biochem., Tokyo, 55, 205 (1964).Google Scholar
- 6.D. G. Chincharadze, Candidate Dissertation in Pharmaceutical Sciences, Tbilisi State Medical Univ., Tbilisi (1994).Google Scholar
- 7.A. N. Kel′ginbaev, M. B. Gorovits, T. T. Gorovits, and N. K. Abubakirov, Khim. Prir. Soedin., 480 (1976).Google Scholar
- 8.D. G. Chincharadze, A. N. Kelginbaev, M. B. Gorovits, L. I. Eristavi, T. T. Gorovits, and N. K. Abubakirov, Khim. Prir. Soedin., 509 (1979).Google Scholar