The present invention provides a method for preparing 6_Oxy caffeoyl urticarin. The specific steps are as follows: (1) The dried whole grass of crow onion is extracted with 70% ethanol aqueous solution, and the extract is chromatographically eluted with D101 macroporous resin column, followed by water and 60% ethanol aqueous solution, and 60% ethanol eluent is concentrated and dried under vacuum to obtain crude extract of crow onion; (2) The crude extract is specific. In macroporous resin column chromatography, the volume ratio of blank resin to sample resin is not less than 2:1. First, impurities are removed with 30% ethanol aqueous solution, then eluted with 40% or more ethanol aqueous solution. After collecting 40% or more ethanol eluent and concentrating under decompression, 6 O caffeoyl Orin is obtained by drying. The preparation method of the invention has the advantages of simple process operation, high yield and low pollution, and is suitable for the industrial production of high purity 6 caffeoyl urticarin.
【技术实现步骤摘要】
一种6″-氧-咖啡酰基荭草素的制备方法
本专利技术公开了一种植物提取物的制备方法及应用,特别涉及一种6″-氧-咖啡酰基荭草素的制备方法,属于中药分析领域。
技术介绍
鸦葱为菊科植物ScorzoneraaustriacaWild的干燥全草。五月~六月采挖、晒干。本品全长10~40厘米;根粗壮,倒圆锥状,直径约0.3~3厘米;茎多数,簇生于根颈顶端,不分枝,光滑无毛,茎基被稠密褐色的纤维状撕裂的鞘状残遗;基生叶广披针形至长圆状卵形,长20~30(-40)厘米,宽1.2~3.5(-5)厘米,边缘平展,基部鞘状扩大,鞘内被稠密的棉毛,基部边缘有棉毛;茎生叶少数,1~3枚,鳞片状;头状花序单生茎顶,瘦果无毛。鸦葱作为传统中药,全草入药,具有清热解毒、消炎、通乳的功效,主治痈疮、淋病、妇女带下、乳腺炎等症。鸦葱也是一味传统藏药(藏名:巴多拉)。关于鸦葱化学成分的研究除本研究室外,只有武全香、祝英、李娟等报道了鸦葱中倍半萜类和三萜类化学成分的研究(WuQX,SuYB,ZhuY.TriterpenesandsteroidsfromtherootsofScorzoneraaustr ...
【技术保护点】
1.6″‑氧‑咖啡酰基荭草素的制备方法,其特征在于采用溶剂浸泡法进行提取,利用特定的大孔树脂柱色谱制备6″‑氧‑咖啡酰基荭草素;所述方法包括如下步骤:(1)干燥的鸦葱全草用70%的乙醇水溶液提取,提取物上D101大孔树脂柱色谱,依次用水、60%的乙醇水溶液洗脱,60%的乙醇洗脱液经减压浓缩干燥,得鸦葱粗提取物;(2)上述粗提取物进行特定的大孔树脂柱色谱,空白树脂与上样树脂的体积比不小于2:1,先用30%乙醇水溶液除杂,然后用40%或高于40%乙醇水溶液进行洗脱,收集40%或高于40%乙醇洗脱液经减压浓缩,干燥即得6″‑氧‑咖啡酰基荭草素。
【技术特征摘要】
1.6″-氧-咖啡酰基荭草素的制备方法,其特征在于采用溶剂浸泡法进行提取,利用特定的大孔树脂柱色谱制备6″-氧-咖啡酰基荭草素;所述方法包括如下步骤:(1)干燥的鸦葱全草用70%的乙醇水溶液提取,提取物上D101大孔树脂柱色谱,依次用水、60%的乙醇水溶液洗脱,60%的乙醇洗脱液经减压浓缩干燥,得鸦葱粗提取物;(2)上述粗提取物进行特定的大孔树脂柱色谱,空白树脂与上样树脂的体积比不小于2:1,先用30%乙醇水溶液除杂,然后用40...
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。