The structures and absolute configurations of five new sesquiterpenic lactones—fukinolide (1), dihydrofukinolide (2), homofukinolide (3), S-fukinolide (4), and fukinanolide (5)—isolated from the flower stalks of Petasites japonicus Maxim. have been established by a combination of spectroscopic and chemical methods, and by correlation with the known fukinone (25).
通过光谱和
化学方法,并结合已知的fukinone(25),确定了从Petasites japonicus Maxim的花梗中分离出的五种新的
倍半萜内酯——fukinolide(1)、dihydrofukinolide(2)、homofukinolide(3)、S-fukinolide(4)和fukinanolide(5)的结构和绝对构型。