Abstract
Preparative high-speed counter-current chromatography (HSCCC) combined with conventional column chromatography (CC) has been used for isolation and purification of methyllycaconitine from Delphinium pseudocyanthum. n-Hexane-ethyl acetate-methanol-water, 1:1:1:2 (v/v), was used as the solvent system for HSCCC. Separation of methyllycaconitine from an HSCCC fraction was successfully achieved by CC on silica gel using chloroform-methanol, 7:1 (v/v), as mobile phase. A total of 113.45 mg methyllycaconitine of purity >95% was obtained from 1.044 g extract of D. pseudocyanthum. Its structure was identified by MS and NMR.
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