sinoacutine/stephania

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Combinative application of pH-zone-refining and conventional high-speed counter-current chromatography for preparative separation of alkaloids from Stephania kwangsiensis.

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Prijava / prijava

A method which involves the combination of pH-zone-refining counter-current chromatography (pH-zone-refining CCC) and conventional high-speed counter-current chromatography (HSCCC) was established for the preparative separation of alkaloids from the crude extracts of Stephania kwangsiensis.

[Akaloids from roots of Stephania dentifolia].

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Prijava / prijava

Eight alkaloids were isolated from the thin sulfuric acid extracts of the fresh roots of Stephania dentifolia by aluminum oxide, silica and Sephadex LH-20 column chromatography methods. Based on the spectroscopic analysis and chemical evidence, the structures of these alkaloids were identified as

[Alkaloids in stems and leaves of Stephania cepharantha].

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Prijava / prijava

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

[Determination of 7 bio-active alkaloids in Stephania plants by RP-HPLC].

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Prijava / prijava

Seven bio-active alkaloids (stepholidine, sinoacutine, isocorydine, l-tetrahydropalmatine, crebanine, fanchinoline and tetrandrine) in Stephania plants were determined by RP-HPLC, using UV detection (282 nm) and gradient elution. The reversed phase system consisted of ODS column and

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