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aquilaria sinensis/óxido de silicio iv
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5 resultados
Structural elucidation of two new megastigmane glycosides from the leaves of Aquilaria sinensis.
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The present study was designed to determine the chemical constituents and identify new components of the leaves of Aquilaria sinensis (Lour.) Gilg. The compounds were isolated and purified by repeated silica gel, Sephadex LH-20, and ODS column chromatography and their structures were elucidated by
[Studies on the chemical constituents of Aquilaria sinensis (Lour.) Gilg. V. Isolation and characterization of three 2-(2-phenylethyl) chromone derivatives].
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Three 2-(2-phenylethyl) chromone derivatives were isolated from the ethyl acetate soluble fraction of the alcoholic extract of Aquilaria sinensis (Lous.) Gilg. (Thymeleaceae) by silica gel chromatography. Based on spectral data (UV, IR, 1HNMR, 13CNMR and MS) two of them are new compounds and their
[Studies on the chemical constituents of Aquilaria sinensis(Lour.) Gilg. IV. Isolation and characterization of 2-(2-phenylethyl)chromone derivatives].
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Six chromone derivatives were isolated from the ether soluble fraction of the alcoholic extract of Aquilaria sinensis(Lour.) Gilg. (Thymeleaceae) by silica gel chromatography. On the basis of spectrometric data (UV, IR, 1HNMR and 13CNMR as well as MS) and chemical synthesis one of them was found to
[Chemical constituents of endophytic fungus Nodulisporium sp. A4 from Aquilaria sinensis].
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OBJECTIVE
To investigate the chemical constituents of an endophytic fungus, Nodulisporium sp. A4, from the medicinal plant Aquilaria sinensis and search for antitumor natural products.
METHODS
The fungus was cultured in liquid medium and extracted with EtOAc. The compounds were isolated by various
[Sesquiterpenes and monoterpene from Aquilaria sinensis].
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The column chromatography on silica gel, semi-preparative HPLC were used to separate and purify the compounds from the petroleum ether and ethanol extract of Aquilaria sinensis. Nine compounds were isolated. On the basis of their spectroscopic data, the structures were identified as 3, 3,
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