150821-16-2Relevant articles and documents
New triterpenoid saponin glycosides from the fruit fibers of: Trichosanthes cucumerina L.
Chulrik, Wanatsanan,Chunglok, Warangkana,Li, Jian-Xin,Suebsakwong, Parichat,Suksamrarn, Apichart,Yao, Zhu-Jun
, p. 10461 - 10470 (2020/03/27)
Five new triterpenoid saponin glycosides, trichocucumerisides A-E (1-5), together with eleven known compounds (6-16) were isolated from Trichosanthes cucumerina fruit fibers. The structures of the new compounds were elucidated by detailed analysis of NMR and mass spectroscopic data as well as chemical reactions. The anti-inflammatory study against nitric oxide (NO) production in lipopolysaccharide (LPS)-stimulated RAW264.7 cells shows that compounds 7 and 9 exhibited stronger NO inhibitory activity, with IC50 values of 3.0 and 2.7 μM, respectively, with comparison to positive references Celecoxib and aminoguanidine (IC50 values 75.7 and 75.0 μM, respectively). Compounds 7 and 9 also possessed a greater selectivity index (SI) of approximately 3-4-fold activity than that of the positive references.
A new biologically active triterpenoid saponin from the aerial parts of Neanotis wightiana
Das, Niranjan,Ghosh, Partha Sarathi,Das, Manash Chandra,Dinda, Biswanath
, p. 270 - 273 (2013/08/25)
Phytochemical investigation of the aerial parts of Neanotis wightiana for the first time has led to the isolation of one new triterpenoid saponin, neanoside A (1), along with seven known compounds, oleanolic acid (2), ursolic acid (3), β-sitosterol (4) and its glucoside (5), stigmasterol (6) and its glucoside (7) and hexacosanoic acid (8). The structures of these compounds were elucidated by means of spectroscopic (NMR, MS and other) and chemical techniques as well as comparison with literature data. The structure of 1 was elucidated as 3-O-α-l-rhamnopyranosyl-(1 → 2)-β-d-xylopyranosyl (1 → 3)-β-d-glucopyranosyl bayogenin. The in vitro biochemical analysis of compound 1 against the activity of human serum liposomal enzymes, SGOT (serum glutamate oxaloacetate transaminase), SGPT (serum glutamate pyruvate transaminase) and ALP (alkaline phosphatase) and glycerol kinase showed significant reduction of their activity.
A new complex triterpenoid saponin from Samanea saman with haemolytic activity and adjuvant effect
Barbosa, Antony De Paula,Da Silva, Bernadete Pereira,Parente, José Paz
experimental part, p. 626 - 631 (2012/10/07)
A new complex triterpenoid saponin was isolated from the stem bark of Samanea saman by using chromatographic methods. Its structure was established as 3-[(2-O-β-d-glucopyranosyl-β-d-glucopyranosyl)oxy]-2,23-dihydroxy- (2β,3β,4α)-olean-12-en-28-oic acid O-β-d-glucopyranosyl-(1 → 3)-O-[O-β-d-glucopyranosyl-(1 → 4)]-O-6-deoxy-α-l- mannopyranosyl-(1 → 2)-6-O-[4-O-[(2E,6S)-2,6-dimethyl-1-oxo-2,7-octadienyl] -6-deoxy-α-l-mannopyranosyl)oxy]-β-d-glucopyranosyl ester (1). Structural elucidation was performed using detailed analyses of 1H and 13C NMR spectra including 2D NMR spectroscopic techniques and chemical conversions. The haemolytic activity of the saponin was evaluated using in vitro assays, and its adjuvant potential on the cellular immune response against ovalbumin antigen was investigated using in vivo models.