Triterpene saponins from Salsola imbricata

Triterpenoid glycosides from the leaves of Meliosma henryi

“…The ROESY experiment revealed also several correlations, including H-3/H-5 and H-5/H-9 which indicated that the OH-3 group was in a b-orientation and H-25 with H-24 and H-26 indicating their b-orientation. The chemical shifts values for protons and carbons were in accordance with the literature data of 3b-hydroxy-30-nor-oleana-12,20-(29)-dien-28-oic acid (akebonoic acid) (Hamed et al, 2011;Wang et al, 2012;Zhao et al, 2014). 1 H and 13 C NMR spectra showed that akebonoic acid was common as aglycone to saponins 1-5.…”

Chemical metabolome assay by high‐resolution Orbitrap mass spectrometry and assessment of associated antitumoral activity of Actinocephalus divaricatus

“…This compound, with the aglycone at m/z 439, was identified as a nortriterpenoid saponin derivative . Similar fragmentation patterns were observed for the precursor ions m/z 909 ( 22 ), 747 ( 29 ) and 601 ( 30 ) …”

“…24 Similar fragmentation patterns were observed for the precursor ions m/z 909 (22), 747 (29) and 601 (30). 37,40,41 The second-order mass spectra of the precursor ions of m/z 1087 (18), 793 (19), 925 (24), 895 (25) and 631 (26) showed the product ion Y 0 − at m/z 455, which corresponds to the deprotonated aglycone [A−H] − of the oleanolic acid ( Figure 4, Table 1). [33][34][35]38,39 As an (Table 1), which suggested hydroxyoleanolic acid derivatives for the precursor ions m/z 809 (20), 941 (21), 779 (27) and 647 (28).…”

Phytochemical composition of some common coastal halophytes of the United Arab Emirates

“…Oleic acid (monosaturated fatty acid) and linolenic acid (an omega-3-acid, falling into poly-unsaturated fatty acids category) have been associated with reducing risks of cardiovascular and heart disease in humans (Ramadan et al, 2009). Methanol extracts obtained from the C. imbricatum roots were found to contain four identified triterpenoids, namely triterpene saponins, which included glycosides: pseudoginsenoside and silphioside as well as two newly discovered akebonic acid glucopyranoside and hydroxyoleanolic acid glucopyranoside (Hamed et al, 2011).…”