Tirucallane and oleanane triterpenes from the resin of Aucoumea klaineana

Ecological Implications of Plant Secondary Metabolites - Phytochemical Diversity Can Enhance Agricultural Sustainability

“…Oleoresin, which has antifungal properties against Pestalotiopsis microspora (Chen et al, 2018), is made up of triterpenes, some of which are oleanane saponins (Liang et al, 1988). The release of flavonoids from alfalfa seeds and roots slows growth of parasitic species of Pythium spp.…”

Tirucallane-Type Alkaloids from the Bark of Dysoxylum laxiracemosum

“…Similar to compounds 1-7, the 1 H and 13 C NMR data (Tables 2 and 3) of 8 showed the tirucallan-7-ene pattern in rings A-D. 6 In combination with the molecular formula C 26 H 35 NO 3 , based on its HRESIMS, the chemical shifts of the remaining four carbons [δ C 152.5 (s), 128.2 (d), 170.5(s), and 171.5(s)] and NH suggested the presence of a maleimide ring. 8 The structures of the known compounds, 3-oxo-24,25,26,27tetranortirucall-7-ene-23(21)-lactone (9), 9 3-hydroxy-24,25,26,27-tetranortirucall-7-ene-23(21)-lactone (10), 9 β-amyrone, 10 β-amyrin, 11 24,25-epoxytirucall-7-ene-3,23-dione, 12 syringaresinol, 13 scopoletin, 14 3R-hydroxy-12-ursen-28-oic acid, 15 xylobuxin, 16 piscidinol B, 17 and β-amyrin acetate, 18 were determined by comparing their spectroscopic data with reported values. [9][10][11][12][13][14][15][16][17][18] Compounds 1-10 were evaluated for their cytotoxicity against the HL-60, SMMC-7721, A-549, MCF-7, and SW480 cell lines by the MTT method, 19 and the results are shown in Table 4.…”

“…8 The structures of the known compounds, 3-oxo-24,25,26,27tetranortirucall-7-ene-23(21)-lactone (9), 9 3-hydroxy-24,25,26,27-tetranortirucall-7-ene-23(21)-lactone (10), 9 β-amyrone, 10 β-amyrin, 11 24,25-epoxytirucall-7-ene-3,23-dione, 12 syringaresinol, 13 scopoletin, 14 3R-hydroxy-12-ursen-28-oic acid, 15 xylobuxin, 16 piscidinol B, 17 and β-amyrin acetate, 18 were determined by comparing their spectroscopic data with reported values. [9][10][11][12][13][14][15][16][17][18] Compounds 1-10 were evaluated for their cytotoxicity against the HL-60, SMMC-7721, A-549, MCF-7, and SW480 cell lines by the MTT method, 19 and the results are shown in Table 4. The most potent cytotoxic compound was laxiracemosin E (5), while compound 1 also showed significant cytotoxicity against these cell lines.…”

“…The structures of the known compounds, 3-oxo-24,25,26,27-tetranortirucall-7-ene-23(21)-lactone ( 9 ), 3-hydroxy-24,25,26,27-tetranortirucall-7-ene-23(21)-lactone ( 10 ), β-amyrone, β-amyrin, 24,25-epoxytirucall-7-ene-3,23-dione, syringaresinol, scopoletin, 3α-hydroxy-12-ursen-28-oic acid, xylobuxin, piscidinol B, and β-amyrin acetate, were determined by comparing their spectroscopic data with reported values. − …”

Terpenoids from Toona ciliata

“…The known compounds 5α,6β,8α-trihydroxy-28-norisotoonafolin, toonaciliatin C, bourjotinolone B, dyvariabilin H, meliatetraolenone, (21 R ,23 R )-epoxy-21α-ethoxy-24 S ,25-dihydroxyapotirucalla-7-en-3-one ( 4a ), 21α-ethoxy-24 S ,25-dihydroxyapotirucalla-7-en-3-one, bourjotinoline A, hispidone, and 3-episapelin A were identified by comparison of their spectroscopic data with reported data.…”