synthesis of (+/-)-sundiversifolide (1), an allelopathic bisnor-sesquiterpene lactone isolated from germinating sunflower (Helianthus annuus L.) seeds, was achieved by employing Lewis acid-mediated Claisen rearrangement as the key step.
通过使用Lewis酸介导的Claisen重排作为关键步骤,从发芽的向日葵(Helianthus annuus L.)种子中分离出的化感性比诺-
倍半萜烯内酯(+/-)-sundiversifolide(1)是一种新的简明合成方法。