Identification of Ligustrum sinense Lour. And Jasminum elongatum (Bergium) Wild / 广州中医药大学学报

Objective To identify the Ligustrum sinense Lour.and Jasminum elongatum(Bergium) Wild.from the macroscopic appearance and microscopic features.Methods Fresh samples of stems,leaves,flowers and fruits of the two kinds of medicinal plants were harvested.Stereoscopy was used for the observation of macroscopic appearance of Ligustrum sinense Lour.and Jasminum elongatum (Bergium) Wild.,and the microscopy was used for the examination of their microscopic features of stem and leaf cross section,tear film and the powder of leaf upper and lower epidermis.Results Original plant characteristics of the two kinds of species were as follows:Ligustrum sinense Lour.had a racemes and funnel-shaped corolla,while Jasminum elongatum (Bergium)Wild.had a cymes and salverform corolla.Microscopic identification results were as follows:the stem pith of Ligustrum sinense Lour.was smaller,and the stem pith ofJasminum elongatum(Bergium) Wild.was bigger;Ligustrum sinense Lour.stem powder had less pit or texture in the sclereids,and had reticulate vessels,and Jasminum elongatum(Bergium) Wild.stem powder had apparent pit or texture in the sclereids,and had spiral vessels.Conclusion The results will provide a basis for the identification,exploitation and utilization of Ligustrum sinense Lour.and Jasminum elongatum(Bergium) Wild.

Studies on lignans and flavonoid glycosides of Ligustrum sinense / 中草药

Object To study the chemical constituents in Ligustrum sinense Lour.Methods One new and four known phenolic glycosides were isolated and identified by column chromatography, MS, IR and NMR data.Results Five phenolic and two lignan components were isolated from water soluble part in methanol extract of the stem and leaves of L.sinense.The obtained compounds were identified as sinenosides I, 8′-?-hydroxyl-lariciresinol-4′-O-?-L-glucopyranoside (Ⅰ), a new compound; liriodendrin (Ⅱ); kaempferol-3-O-?-D-glucopyranoside (Ⅲ); 7-O-?-L-rhamnopyransyl-kaempeferol-3-O-?-D-glucopyranoside (Ⅳ), 7-O-?-D-rhamnopyransyl-kaempeferol-3-O-?-D-rhamnopyranoside (Ⅴ).Conclusion All the compounds were isolated from this plant for the first time.