aerial parts of Physalis nicandroides. The structures of 1 and 2, including their absolute configurations, were established by analyses of their spectroscopic data, together with the X-ray diffraction analysis of acetonide 3 and chemical correlation with (−)-(13E)-labd-13-ene-8α,15-diol (6), whose absolute configuration was also confirmed by X-ray analysis of its dibromo derivative 7. The epimeric labdenediols
从酸浆the的地上部分分离出新的游离异链齿兰醇1和2的混合物。1和2的结构,包括它们的绝对构型,是通过对它们的光谱数据进行分析,以及对
乙炔化物3的X射线衍射分析以及与(-)-(13 E)-labd-13-ene的
化学相关性而建立的-8α,15
-二醇(6),其绝对构型也通过对其二
溴衍
生物7的X射线分析证实。差向异构体拉丹烯二醇8和9,已知的拉丹烯6和11,并且酰基
蔗糖12和13也被分离。Labdanes 6和11在诱导的耳部
水肿模型中显示出中等的抗炎活性。