HRID1943576

反应详情

EQUATION

反应方程式

HRID 1943576 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

CONDITIONS

反应条件

温度
80 °C

PROCEDURE

实验过程

20 g of the extract prepared in Example 1 was taken in 1N HCl-50% methanol solution (v/v) in an amount of 20 times (v/w) of its amount and heated to reflux in a water bath at 80° C. for 8 hours to hydrolyze sugars bonded to icariin. The reaction was concentrated under pressure to remove the solvent. The residue was added to ethanol (200 ml), stirred (3 times) and subjected to filtration to remove precipitated salts. The filtrate was concentrated under pressure to obtain a crude product, which was then separated by silica gel column chromatography (chloroform:methanol=8:1 to 4:1) to give 0.9 g of icaritin, 0.7 g of icariside 1 and 0.5 g of icariside II.

WORKUP

后处理

  1. temperatureheated
  2. concentrationThe reaction was concentrated under pressure
  3. customto remove the solvent
  4. additionThe residue was added to ethanol (200 ml)
  5. filtrationsubjected to filtration
  6. customto remove
  7. customprecipitated salts
  8. concentrationThe filtrate was concentrated under pressure
  9. customto obtain a crude product, which
  10. customwas then separated by silica gel column chromatography (chloroform:methanol=8:1 to 4:1)