Triterpenoidal saponins from Dumasia truncata

Anti-inflammatory and Antitumor-Promoting Effects of the Triterpene Acids from the Leaves of Eriobotrya japonica

“…Preparative reversed-phase HPLC of these fractions eventually yielded sixteen triterpene acids, 1-16 (Chart 1), which were identified as: oleanolic acid (1; ca. 2.7% in the EtOAc-soluble fraction), 21) maslinic acid (2; 1.7%), 9) methyl arjunolate (3; 0.2%), 22,23) 2a,3a,23-trihydroxyolean-12-en-28-oic acid (4; 1.3%), 24) d-oleanolic acid (5; 0.1%), 24,25) ursolic acid (6; 9.7%), 26) methyl ursolate (7; 0.2%), 27) corosolic acid (8; 4.4%), 9) 3-O-cis-p-coumaroyltormentic acid (9; 0.8%), 21) 3-O-trans-p-coumaroyltormentic acid (10; 4.0%), 9) 3-epicorosolic acid (11; 0.2%), 28) euscaphic acid (12; 4.9%), 29) 1b-hydroxyeuscaphic acid (13; 2.9%), 29) usrolic acid lactone (14; 0.1%), 30) betulinic acid (15; 0.1%) 31) and methyl betulinate (16; 0.1%). 32) Identification of the compounds was performed by spectral comparison with the corresponding compounds in the literature.…”

Amyloid β aggregation inhibitory activity of triterpene saponins from the cactus Stenocereus pruinosus

“…With respect to the sugar unit, 6 has a unique sugar chain for cactus plants. There are some reports related to that type of sugar chain [28,[43][44][45][46][47], as it is not a common sugar unit, and this is the first report of its isolation from cacti. Paying attention to glucuronic acid, some compounds (3, 4, 9) were isolated as glucuronic acid methyl esters.…”

Rapid analysis of constituents of Radix Cyathulae using hydrophilic interaction‐reverse phase LC‐MS

“…According to the rule (v) mentioned above, it could be easily concluded that there was a glycosidic subtituent at C28 of compound F and there was no glycosidic substituent at C28 of compound K . Based on the retention behavior, compound F was tentatively identified as 3‐ O ‐α‐ L ‐rhamnopyranosyl‐(1→4)‐β‐ D ‐glucuronopyranosyl‐28‐ O ‐β‐ D ‐glucopyranosyl hederagenin 27 or 3‐ O ‐α‐ L ‐rhamnopyranosyl‐(1→3)‐β‐ D ‐glucuronopyranosyl‐28‐ O ‐β‐ D ‐glucopyranosyl hederagenin 30, compound K could be tentatively ascribed as 3‐ O ‐α‐ D ‐rhamnopyranosyl‐(1→3)‐β‐ D ‐galactopyranosyl‐(1→3)‐β‐ D ‐glucuronopyranosyl hederagenin 31.Compound D gave [M+NH 4 ] + , [M+Na] + , and [M+H] + ions at m / z 1106.5782, 1111.5273, and 1089.5436, respectively. The ions at m / z 957.5056 and 927.4892 were observed by loss of 132 and 162 Da from [M+H] + ion, indicating the existence of xylose and glucose at different positions.…”