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[摘要]
目的 研究落地生根Bryophyllum pinnatum的化学成分。方法 采用硅胶柱色谱、凝胶柱色谱和制备薄层色谱等多种方法进行分离,并通过NMR等多种方法鉴定化合物的结构。采用RBL-2H3细胞脱颗粒法测定了化合物的抗过敏活性。结果 从落地生根的60%乙醇提取部位分离得到1个木脂素类化合物:落地生根苷(1);4个黄酮类化合物:山柰酚(2)、芦丁(3)、槲皮素-3-O-α-L-吡喃阿拉伯糖基(1→2)-α-L-吡喃鼠李糖苷(4)、槲皮苷(5)以及β-谷甾醇(6)。结论 化合物1为新化合物,且木脂素类化合物为首次从该植物中分离得到。山柰酚为落地生根抗过敏主要活性成分之一。
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[Abstract]
Objective To isolate and identify the chemical constituents from the herbs of Bryophyllum pinnatum. Methods The compounds were isolated by chromatography on silica gel and Sephadex LH-20 columns and preparative TLC. The structures of the isolated compounds were elucidated based on spectroscopic data and chemical properties. The anti-allergic activities of the compounds were evaluated by RBL-2H3 cells. Results Six compounds were isolated from the herbs of B. pinnatum. Their structures were identified as bryophylluside (1), kaempfrol (2), rutin (3), quercetin 3-O-α-L-arabinopyranosyl (1→2) α-L-rhamnopyranoside (4), quercitrin (5), and β-sitosterol (6). Conclusion Compound 1 is a new lignan, and lignans are first isolated from B. pinnatum. Kaempfrol is one of the main anti-allergic active compounds in B. pinnatum.
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