取神草香叶爵床(Justicia hyssopifolia)干燥叶(1500g),用乙醇回流提取,得干燥提取物(约200g),提取物经氯仿(85g)、乙酸乙酯(8g)、丁醇(24g)和水分离。其中丁醇提取部分真空干燥,上硅胶柱急骤层析,用乙酸乙酯-甲醇梯度洗脱,得70个部分,经薄层色谱分离分组,第31～70部分用乙酸乙 The dried leaves (1500 g) of Justicia hyssopifolia were extracted and refluxed with ethanol to give a dry extract (about 200 g). The extract was extracted with chloroform (85 g), ethyl acetate (8 g) and butanol (24 g). Separated from water. The butanol extraction fraction was vacuum dried and flash chromatographed on a silica gel column eluting with a gradient of ethyl acetate-methanol to give 70 fractions. The fractions were separated by thin layer chromatography. The fractions 31-70 were treated with ethyl acetate.