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New Triterpenoid Saponins (new + triterpenoid_saponin)
Selected AbstractsA New Triterpenoid Saponin and a New Glycoside from Epigynum aurilumCHINESE JOURNAL OF CHEMISTRY, Issue 12 2003Jian-Xin Cao Abstract A new triterpenoid saponin with novel sugar moiety (1), a new trisaccharide derivative (2), as well as a known monosaccharide derivative (3), were isolated from the dried stem of Epigynum aurilum. The structures of compounds 1 and 2 were determined by MS and NMR spectram analyses. [source] Complete assignments of 1H and 13C NMR spectra of leucanthoside A, a new triterpenoid saponin from Cephalaria leucantha L.MAGNETIC RESONANCE IN CHEMISTRY, Issue 7 2006D. Go, evac Abstract Leucanthoside A, a new allose-containing triterpenoid saponin (1), was isolated from the aerial parts of Cephalaria leucantha L. Its structure was determined by electrospray ionization mass spectrometry and NMR spectroscopy. Complete assignments of the 1H and 13C NMR chemical shifts were achieved by two-dimensional NMR experiments: DQF-COSY, NOESY, TOCSY, HSQC, DINE-HSQC, HMBC, 13C- 1H 2D- J -resolved spectroscopy, and 1,1-ADEQUATE. Copyright © 2006 John Wiley & Sons, Ltd. [source] A New Triterpenoid Saponin and a New Glycoside from Epigynum aurilumCHINESE JOURNAL OF CHEMISTRY, Issue 12 2003Jian-Xin Cao Abstract A new triterpenoid saponin with novel sugar moiety (1), a new trisaccharide derivative (2), as well as a known monosaccharide derivative (3), were isolated from the dried stem of Epigynum aurilum. The structures of compounds 1 and 2 were determined by MS and NMR spectram analyses. [source] Triterpenoid Saponins from Pulsatilla cernua (Thunb.) Bercht. et Opiz.JOURNAL OF INTEGRATIVE PLANT BIOLOGY, Issue 2 2007Tun-Hai Xu Abstract To investigate saponins from the roots of Pulsatilla cernua (Thunb.) Bercht. et Opiz., two new compounds together with five known triterpenoid saponins were isolated. The structures of the two new triterpenoid saponins, named cernuasides A and B, were elucidated as 3-O-[p-,- D -xylopyranosyl(1,2)]-[,- L -rhamnopyranosyl(1,4)]-,- L -arabinopyranosyl hederagenin 28-O-,- D -glucopyranosyl ester (compound 1) and 3-O-[,- L -arabinopyranosyl(1,3)]-[,- L -rhamnopyranosyl (1,2)]-,- L -arabinopyranosyl hederagenin 28-O-,- D -glucopyranosyl ester (compound 2) by 1D, 2D-NMR techniques, ESIMS analysis, as well as chemical methods. [source] Complete assignments of 1H and 13C NMR spectral data for three new triterpenoid saponins from Ilex hainanensis Merr.MAGNETIC RESONANCE IN CHEMISTRY, Issue 2 2009Xiao-Qing Chen Abstract Three new oleanane-type triterpenoid saponins, ilexhainanoside C, D and E, all with 24, 28-dioic acid groups, were isolated from the leaves of Ilex hainanensis. They were 3,-hydroxyolean-12-ene-24, 28-dioic acid-28- O -,- D -glucopyranoside(1), 3,, 19,-dihydroxyolean-12-ene-24, 28-dioic acid-28- O -,- D -glucopyranoside(2) and 3,, 29-dihydroxyolean-12-ene-24, 28-dioic acid-28- O -,- D -glucopyranoside(3). The structures of these three new compounds were elucidated and complete assignments of the 1H and 13C NMR spectroscopic data were achieved by 1D and 2D NMR experiments [heteronuclear single quantum coherence (HSQC), HMBC and rotational nuclear Overhauser effect spectroscopy (ROESY)]. Copyright © 2008 John Wiley & Sons, Ltd. [source] Complete assignments of 1H and 13C NMR spectroscopic data for two new triterpenoid saponins from Ilex hainanensisMAGNETIC RESONANCE IN CHEMISTRY, Issue 2 2007Sixiang Zhou Abstract Two novel unsaturated E-ring pentacyclic triterpenoid saponins, ilexhainanoside A and ilexhainanoside B, were isolated from the leaves of Ilex hainanensis. Their chemical structures were determined by MS, NMR spectroscopy and chemical analysis. Complete assignments of the 1H and 13C NMR spectroscopic data were achieved by 1D and 2D NMR experiments (HSQC, HMBC, ROESY and 1H,1H COSY). Copyright © 2006 John Wiley & Sons, Ltd. [source] Glycosides from the Leaves of Ilex latifoliaCHINESE JOURNAL OF CHEMISTRY, Issue 9 2001Ming-An Ouyang Abstract Nine new triterpenoid saponins; latifolosides IQ and three known compounds: Kudinoside A, cis -roseoside, and kaempferol-3-O-,- L -rhamnopyranosyl (1,6)-O-,-D-glucopyanoside were isolated from the leaves of Ilex latifolia. Their structures were elucidated by spectroscopic and chemical methods. [source] | ||||||||||