• Natural Product Sciences
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• v.3 no.1
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• pp.55-58
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• 1997

Water extract of the bark of Palaquium stehlinii has been bioassayed for antimicrobial activity and was found to inhibit the growth of Escherichia coli and Penicillium chrysogens. Phytochemical study revealed the presence of amyrin esters and 3,4',5,7-tetrahydroxyflavanone in the extract.

• Natural Product Sciences
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• v.13 no.1
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• pp.11-16
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• 2007

Alcoholic extract of Spathodea campanulata P. aerial parts, and two of the isolated fractions from celite column showed strong antioxidant activity (92, 94 & 89% RSA, Radical Scavenging Activity). Phytochemical investigation of chloroform/EtOAc faction of this column led to the isolation of phenolic acids, caffiec acid (1), and ferulic acid (2), fraction EtOAc/MeOH on further fractionation afforded 3 Flavonoids, kampferol 3-O-glucoside (3), quercetin 3-methyl ether (4) and 8-methoxy kampferol 3-O-glucoside (5). The isolated constituents were identified by co chromatography with authentic samples, TLC, PC., UV, MS and $^1H-NMR$. Also the lipoidal matter of the plant was studied. The unsaponifiable matter was found to be mixture of hydrocarbons from $(C_{14}-C_{28})$, cholesterol, campasterol, stigmasterol, and ${\alpha}-amyrin$. Fatty acid methyl esters were found to contain 12 fatty acids. The fatty acids containing $C_{18}$ farmed ca.65% of the total mixture.

• Korean Journal of Pharmacognosy
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• v.46 no.1
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• pp.31-37
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• 2015

Thirteen compounds were isolated from n-hexane layer of the extracts of feces of Trogopterus xanthipes. Their chemical structures were elucidated as lupeol (1), lupenone (2), simiarenol (3), epitaraxerol (4), taraxerone (5), fatty acid esters of 11-oxo-${\beta}$-amyrin (6), 12-oleane-3,11-dione (7), $5{\beta}$-stigmastan-$3{\alpha}$-ol (8), $5{\beta}$-stigmastan-$3{\beta}$-ol (9), $5{\alpha}$-stigmastan-3-one (10), $5{\beta}$-stigmastan-3-one (11), $5{\beta}$-cholestan-$3{\alpha}$-ol (12), and 2-methoxyphenanthrene (13) on the basis of spectroscopic data. Even though all the isolated compounds are known, to the best of our knowledge, all the compounds (1-13) are reported from this species for the first time.