title: Structure of steroidal saponins from underground parts of Allium nutans L.
abstract: Four steroidal glycosides including deltoside and nolinofuroside D and two novel saponins were isolated from underground parts of Allium nutans L. On the basis of the spectral (LSIMS and NMR) analysis, the structures of the new compounds were established as 25R Delta(5)-spirostan 3beta-ol-3-O-¿alpha-L-rhamnopyranosyl(1-->2)-[beta-D-glucopyranosyl(1 -->4)]-O-beta-D-galactopyranoside¿ and 25R Delta(5)-spirostan 1beta, 3beta-diol 1-O-beta-D-galactopyranoside. On the basis of the extraction efficiency, the concentration of saponins was established to be about 4% of dry matter, which makes this species a good source of steroidal saponins for commercial use.
authors.affiliation: Department of Plant Physiology, Kyiv State University, Kyiv, Ukraine.
authors.forename: L S
authors.initials: LS
authors.lastname: Akhov
authors.forename: M M
authors.initials: MM
authors.lastname: Musienko
authors.forename: S
authors.initials: S
authors.lastname: Piacente
authors.forename: C
authors.initials: C
authors.lastname: Pizza
authors.forename: W
authors.initials: W
authors.lastname: Oleszek
mesh_terms: D000490:Allium / Q000737:chemistry*; D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D018517:Plant Roots / Q000737:chemistry; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification; D018629:Spectrometry, Mass, Secondary Ion; D013256:Steroids / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D012503:Saponins; D013256:Steroids