目的对地菍(Melastoma dodecandrum Lour)全草的化学成分进行分离鉴定。方法溶剂萃取及各种色谱技术分离纯化，经UV，IR，¹H-NMR，¹³C-NMR，MS以及化学方法鉴定了它们的结构。结果分离得到7个化合物，分别是木犀草素(Ⅰ)、木犀草素-7-O-β-葡萄糖苷(Ⅱ)、木犀草素-7-O-β-半乳糖苷(Ⅲ)、槲皮素(Ⅳ)、槲皮素-3-O-β-葡萄糖苷(Ⅴ)、槲皮素-3-O-β-半乳糖苷(Ⅵ)、广寄生苷(Ⅶ)。结论这些成分均为首次从该植物中获得。

OBJECTIVE To separate and identify the chemical constituents of the whole plant of chinese herb -Melastoma Dodecandrum- Lour.METHOD S The flavonoid constituents were isolated by solvent extraction and chromatography.Their chemical structures were identified on the basis of physicchemical constant and spectral data.RESULTS Seven compounds were isolated and identified as luteolin (Ⅰ),luteolin-7-O-β-glucoside (Ⅱ),luteolin-7-O-β-galactoside (Ⅲ),quercetin (Ⅳ),quercetin-3-O-β-glucoside (Ⅴ),quercetin-3-O-β-galactoside (Ⅵ) and avicularin (Ⅶ).CONCLUSION The abovementioned compounds were separated from the plant for the first time.