corydine/stephania

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[Alkaloids of African Menispermaceae. II. Stephania dinklagei (Engl.) Diels: isolation of (plus) corydine, (plus) isocorydine and (minus) roemerine].

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Cytotoxic and DNA damaging activity of some aporphine alkaloids from Stephania dinklagei.

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Six aporphine alkaloids, liriodenine, corydine, isocorydine, atherospermidine, stephalagine and dehydrostephalagine, were isolated by bioassay-guided fractionation of the EtOH extract of the stems of Stephania dinklagei. Liriodenine showed strong cytotoxic activity while corydine and

Oxoaporphine alkaloids and quinones from Stephania dinklagei and evaluation of their antiprotozoal activities.

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Bioactivity-guided fractionation of Stephania dinklagei yielded six compounds including, two zwitterionic oxoaporphine alkaloids, N-methylliriodendronine, and 2-O,N-dimethylliriodendronine, two oxoaporphine alkaloids, liriodenine, and dicentrinone, one aporphine alkaloid, corydine, and one

[Alkaloids in stems and leaves of Stephania cepharantha].

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OBJECTIVE To study the alkaloids in the stems and leaves of Stephania cepharantha. METHODS The dried stems and leaves of S. cepharantha were percolated with 95% ethanol and the solvent was removed by rotary evaporation to give a concentrate, and the concentrate was extracted by petroleum ether and

Aporphine alkaloids from the roots of Stephania viridiflavens.

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Further investigation on the phytochemistry of the medicinal plant Stephania viridiflavens led to the isolation of a new naturally occurring aporphine alkaloid, (+)-6R, 6aS-isocorydine N(beta)-oxide (1), together with three known aporphine alkaloids: (+)-6R, 6aS-corydine N(beta)-oxide (2),

Preparative separation of isoquinoline alkaloids from Stephania yunnanensis by pH-zone-refining counter-current chromatography.

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In this paper, five isoquinoline alkaloids were successfully separated from a crude extract of Stephania yunnanensis using pH-zone-refining counter-current chromatography in single-step. With a two-phase solvent system composed of methyl-tert-butyl ether (MtBE)-acetonitrile-water (2:2:3, v/v) where

Comprehensive separation and analysis of alkaloids from Stephania yunnanensis by counter-current chromatography coupled with liquid chromatography tandem mass spectrometry analysis.

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The polar compounds such as alkaloid compounds are important bioactive components in traditional Chinese medicines. In present study, a comprehensive method for separation and analysis of polar compounds from the polar fraction of traditional Chinese medicine Stephania yunnanensis was established.

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