19942-02-0Relevant articles and documents
Triterpene saponins from Pleurospermum kamtschaticum and their biological activity
Lee, Il Kyun,Choi, Sang Un,Lee, Kang Ro
, p. 1011 - 1018 (2012)
Eleven new triterpene saponins (1-11), together with fourteen known triterpene and triterpene saponins (12-25) were isolated from a MeOH extract of Pleurospermum kamtschaticum HOFFMANN (Umbelliferae). The chemical structures of the new compounds (1-11) were determined by means of MS, 1H-NMR, 13C-NMR, correlated spectroscopy (COSY), heteronuclear multiple bond correlation (HMBC), total correlated spectroscopy (TOCSY) and nuclear Overhauser effect spectroscopy (NOESY) to be pleurosaponin A (1)-K (11). The isolated compounds were tested for their cytotoxicity against four human tumor cell lines (A549, SK-OV-3, SK-MEL-2, HCT15) in vitro using the sulforhodamine B bioassay (SRB) assay. All compounds showed little cytotoxicity against tested cell lines (IC50 >30 μM).
Molecular decodification of gymnemic acids from Gymnema sylvestre. Discovery of a new class of liver X receptor antagonists
Renga, Barbara,Festa, Carmen,De Marino, Simona,Di Micco, Simone,D'Auria, Maria Valeria,Bifulco, Giuseppe,Fiorucci, Stefano,Zampella, Angela
, p. 121 - 131 (2015)
The individual chemical components of commercial extract of Gymnema sylvestre, a medicinal plant used in the traditional systems of the Indian medicine for its antidiabetic and hypolipidemic properties, were isolated and evaluated for their capability to act as modulators of nuclear and membrane receptors involved in glucose and lipid homeostasis. The study disclosed for the first time that individual gymnemic acids are potent and selective antagonists for the β isoform of LXR. Indeed the above activity was shared by the most abundant aglycone gymnemagenin (10) whereas gymnestrogenin (11) was endowed with a dual LXRα/β antagonistic profile. Deep pharmacological investigation demonstrated that gymnestrogenin, reducing the expression of SREBP1c and ABCA1 in vitro, is able to decrease lipid accumulation in HepG2 cells. The results of this study substantiate the use of G. sylvestre extract in LXR mediated dislypidemic diseases.
GLOCHIDIOSIDE, A TRITERPENE GLYCOSIDE FROM GLOCHIDION HEYNEANUM
Srivastava, Rashmi,Kulshreshtha, Dinesh K.
, p. 2672 - 2674 (2007/10/02)
Key Word Index - Glochidion heyneanum; Euphorbiaceae; triterpenoid glycoside; glochidioside.A new triterpenoid glycoside, glochidioside, has been isolated from Glochidion heyneanum.Its structure has been established as 3β 3)-O-α-L-arabinopyranosyl)oxy>-16β-benzoyloxy-olean-12-ene-21β,23,28-triol by chemical and spectroscopic mehtods.