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防己科植物Nemuaron vieillordii Bail的树皮可供民间药用,其中含有0.4%的总生物碱,用改良的Prollius溶液(甲醇-氯仿-0.880克分子NH_4OH=15∶2∶1)冷渗漉至对Mayer试剂无反应为止,减压浓缩提取液到糖浆状,溶于少量温冰醋酸中,慢慢倾入到水中用力搅拌,放置后倾出溶液,沉淀再溶于少量冰醋酸中,再倾入水,弃去沉淀,合并二次水液,浓缩至一定体积,加NH_4OH碱化后
The bark of the anti-hexaphyllum Nemuaron vieillordii Bail was made for private medical use and contained 0.4% total alkaloid and was cold-seeded with a modified Prollius solution (methanol-chloroform - 0.880 mol NH_4OH = 15: 2: 1) Mayer reagent until no reaction, the extract was concentrated under reduced pressure to syrup, dissolved in a small amount of warm glacial acetic acid, slowly poured into the water forced stirring, after pouring out the solution, the precipitate was re-dissolved in a small amount of glacial acetic acid, and then poured into the water , To discard the precipitate, the combined secondary water, concentrated to a certain volume, add alkalinized NH_4OH