Ten compounds were isolated from Qianliang tea, a kind of dark tea fully fermented from the leaves of Camellia sinensis （L.） O. Kuntze vat. sinensis, and identified .as N-（2-hydroxyphenyl）-2-pyrrolidinone （1）, p...
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Ten compounds were isolated from Qianliang tea, a kind of dark tea fully fermented from the leaves of Camellia sinensis （L.） O. Kuntze vat. sinensis, and identified .as N-（2-hydroxyphenyl）-2-pyrrolidinone （1）, p-hydroxyacetophenone （2）, salicifoliol （3）, （-）-3-hydroxy-/q-ionone （4）, p-hydroxy ethyl ciunamate （5）, ethyl 4-（sulfooxy）benzoate （6）, （＋）-matairesinol （7）, （-）-pinoresinol （8）, （＋）-lirioresinol-A （9）, and caffeine （10）, among which compound 1 was isolated as a new natural product, and compound 6 was isolated from Theaceae family for the first time. Compounds 3, 4, 5, 7, 8, and 9 were isolated from this species for the first time.
Two new furostanol glycosides, aspacochinosides L （1） and M （2）, were isolated from the roots of Asparagus cochinchinensis （Lour.） Merr. Their structures were determined by chemical methods and NMR spectral anal...
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Two new furostanol glycosides, aspacochinosides L （1） and M （2）, were isolated from the roots of Asparagus cochinchinensis （Lour.） Merr. Their structures were determined by chemical methods and NMR spectral analysis, including extensive 1D and 2D NMR experiments. Compounds 1 and 2 were investigated for their anti-neuroinflammatory activity in LPS-induced BV-2 cells. Compound 2 showed moderate inhibitory effect on NO production in LPS-induced BV-2 microglial cells with IC 50 value of 32.26 μM.
To investigate the chemical constituents of a South China Sea gorgonian Menella sp., the isolation of ingredients was performed by solvent extraction and repeated chromatography on silica gel, Sephadex LH-20 and prepa...
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To investigate the chemical constituents of a South China Sea gorgonian Menella sp., the isolation of ingredients was performed by solvent extraction and repeated chromatography on silica gel, Sephadex LH-20 and preparative TLC. The structures of isolated compounds were determined by spectroscopic analysis and comparison of 1H and 13C NMR data with those reported inliteratures. Three subergorane sesquiterpenoids and one suberosane sesquiterpenoid were isolated. Their structures were identified as subergorgic acid （1）, subergorgic acid methyl ester （2）, 2β-hydroxyl subergorgic acid methyl ester （3）, and suberosenol A （4）. All compounds were isolated from the genus Menella for the first time.
To investigate the chemical components from the stems of Casearia velutina Bl.,the constituents were isolated by repeated chromatography with silica gel,Sephadex LH-20,and ODS *** structures were elucidated by spectro...
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To investigate the chemical components from the stems of Casearia velutina Bl.,the constituents were isolated by repeated chromatography with silica gel,Sephadex LH-20,and ODS *** structures were elucidated by spectroscopic *** triterpenoids and its glycosides were isolated from the crude extract of ***,and their structures were identified as friedelin-2,3-lactone（1）,friedelane（2）,epifriedelanol（3）,friedelin（4）,2α,3α,19α-trihydroxy-urs-12-en-28-oic acid（5）,2α,3β,19α-trihydroxy-urs-12-en-28-oic acid（6）,2α,3α,23-trihydroxy-urs-12-en-28-oic acid（7）,2α,3α,23-trihydroxy-olean-12-en-28-oic acid（8）,2α,3α,19α,23-tetrahydroxy-urs-12-en-28-oic acid（9）,2α,3α,19α,23-tetrahydroxy-urs-12-en-28-oic acid-28-O-β-D-glucopyranosyl ester（10）,and 3β,19α-dihydroxy-urs-12-en-28-oic acid 3-O-α-L-arabinopyranoside（11）.All the compounds described above were isolated from this species for the first *** 1 is a rarely occurred seco-friedelolactone in Flacourtiaceae.
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