目的 研究高效液相制备色谱从土贝母中制备土贝母苷甲、乙、丙对照品.方法 采用大孔吸附树脂和制备液相色谱等多种方法进行分离纯化,并根据理化性质和波谱数据鉴定化合物的结构.结果 分离得到3个化合物,分别鉴定为土贝母苷甲、土贝母苷乙、土贝母苷丙,收率分别为0.58%、0.13%、0.13%,HPLC归一化法测得质量分数均大于98%.结论 本方法上样量大,重现性好,收率高,适合土贝母苷甲、乙、丙的大量制备生产.

Objective To study the preparation technology of tubeimosides I, II, and III reference substances from Bolbostemma paniculatum by preparative HPLC. Methods Chemical constituents were isolated and purified by macroporous adsorption resin and preparative high performance liquid chromatography. Their structures were identified on the basis of physicochemical properties and spectroscopic data. Results Three compounds were isolated and they were identified as tubeimosides I, II, and III. The yields were 0.58%, 0.13%, and 0.13%. And the purity detected by HPLC was above 98%. Conclusion The method has the advantages of large samples and good repeatability. It can be applied to large-scale preparation of tubeimosides I, II, and III.