* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Example 8 To each of 1 g samples of daidzin and <strong>[529-59-9]genistin</strong> obtained in Example 7 were added 45 ml of methanol and 10 ml of 12N HCl, and the glycoside was decomposed under reflux for 6 hours. After cooling, the reaction mixture was diluted with water, and the solid product was collected by filtration, washed with water, dissolved in 90 ml of a 80% ethanol solution, filtered through a filter paper to give a supernatant. The supernatant was left standing at room temperature to deposit a crystalline product. The mixture was left standing overnight, and the crystals were collected and dried to give daidzein and genistein in the yields of 410 mg and 440 mg, respectively.