| 摘要 |
PURPOSE:To obtain the subject derivative being stable, capable of exhibiting strong antioxidation activity in vivo and useful for medicines, beverages and foods, etc., by acylating beta acids (lupulones) obtained from hop. CONSTITUTION:beta-Acids (lupulones) obtained from hop are made to react with an acylating agent such as an acid chloride in a solvent such as pyridine or dichloromethane at ordinary temperature to 0 deg.C for 1-24hr to provide the objective compound of the formula [R is CH(CH3)2 or CH2CH(CH3)2, etc.; R1 is H, 1-20C alkyl, alkenyl, etc.]. |
