From the rhizomes of Ligularia dentata Hara two new compounds, a phenolic norsesquiterpene ligudentatol (2), and a eudesmanoid ligucyperonol (6), have been isolated in addition to the known caryophillene (1) and additional three phenolic norsesquiterpenes (3, 4, and 5). The structures and stereochemistries of 2 and 6 have been established by a combination of spectroscopic and chemical methods, and by correlation with known ligujapone (4) and (+)-α-cyperone (11), respectively.
从齿叶草的根茎中分离出两种新的化合物,即
酚类去半
萜类化合物利古达托醇(2)和桉树烷类化合物利古赛醇(6),以及已知的卡里奥
菲林(1)和另外三种
酚类去半
萜类化合物(3、4和5)。通过光谱和
化学方法,以及分别与已知的利古甲酮(4)和(+)-α-赛醇(11)进行相关分析,确定了2和6的结构和立体
化学性质。