| 摘要 |
PURPOSE:To industrially and advantageously obtain the titled compound useful for a medicament, by bringing an extract solution of pueraria root as it is or after distilling a solvent off, into contact with a synthetic adsorbent resin to adsorb an isoflavone derivative, followed by elution thereof by using such as an organic solvent. CONSTITUTION:An extract solution of pueraria root (root of Pueraria Iobata Ohwi, etc. are preferred), as it is or after distilling a solvent off, preferably after adjusting its pH at 5.5-7.0, is brought into contact with a synthetic adsorbent resin (example; styrene-divinylbenzene polymeric resin, etc.) to adsorb an isoblavone derivative expressed by the formula. The the compound is eluted with an organic solvent (preferably methanol) or a mixed solvent of the organic solvent with water to obtain the aimed compound. By utilizing the extract solution of the pueraria root produced in production of pueraria starch, it can be produced at a lower cost.
|
