| Platycerium wallichii Hook is one species of the genus Platycerium Desv., Platyceriaceae, its conservation rating is second degree in China. It mainly distributes in Nabangba of Yingjiang County, southwestern of Yunnan province, and it is used locally in curing injuries from falls. There are several assumptions about systematic position of Platycerium Desv. and there is no report about chemical constituents and biological activities of the plants from this genus. From the 95% ethanol extract of the leaves of Platycerium wallichii Hook., seven known compounds were isolated. Based on analysis of their UV, MS, NMR and IR spectra, their structures were identified, respectively as B-sitosteroK(Ⅰ),daucosterol (Ⅱ), 2-propenoic acid, 3-[2, 3-dihydro-2-(4-hydroxy-3-me thoxyphenyl)-3-(hydroxymethyl)-7-methoxy-5-benzofuranyl]- (Ⅲ),pinoresinol-4'-0-β-D-monoglucoside(Ⅳ),pinoresinol (Ⅴ), benzoic acid,2,5-dihydroxy-, methyl ester(Ⅵ), quercetin 3-0-β-galactoside (Ⅶ).They were all isolated from the plant for the first time.Antalgesic effect experiment was carried out respectively for the ethanol extracts of basal fronds and fertile leaves of Platycerium wallichii Hook.. The result demonstrated that extract of leaves of Platycerium wallichii showed faint antalgesic effect. |
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