Study on Chemical Constituents of n-butanol Fraction from Lilium brownii
To study the chemical constituents of n-butanol extract from the fresh bulbs of Lilium brownii,the n-butanol portion of 95%ethanol extract from the fresh bulbs of Lilium brownii was separated and purified by column chromatography such as silica gel column chromatography,macroporous resin,sephadex LH-20 and semi-preparative HPLC,and the structures of the isolated compounds were identified by combining physical and chemical properties and NMR spectroscopy.Sixteen compounds were iso-lated and identified as 3'-O-feruloyl-6-O-(4-O-glucopyranosyl)feruloylsucrose(1),3',6-di-O-feruloylsucrose(2),regaloside A(3),regaloside B(4),regaloside C(5),regaloside E(6),regaloside F(7),2,2-[bis-4-(2,3-dihydroxypropoxy)phenyl]propane(8),baicalin(9),rutin(10),olonolic acid(11),β-sitosterol(12),catechin(13),epicatechin(14),kaempferol(15),and quercetin(16)respectively.Among them,compounds 1,2,4,6,7 and 9 were first isolated from the genus of Lilium.
Lilium browniichemical compositionextraction and separationstructural identification
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