Kamperdick C, Phuong N M, Van Sung T, Adam G
Institute of Plant Biochemistry, Weinberg 3, Halle/Saale, Germany.
Phytochemistry. 2001 Feb;56(4):335-40. doi: 10.1016/s0031-9422(00)00344-7.
From the leaves of Xylopia vielana (Annonaceae) the three dimeric guaianes vielanin A-C were isolated and structurally elucidated by mass and NMR spectroscopy as 1-3. The structure of 1 contains a bridged ring system formed probably via a Diels-Alder reaction of two different guaiane monomers. Compounds 2 and 3 represent symmetric cyclobutanes formally generated from two equal guaiane moieties by [2 + 2] cycloaddition.
从番荔枝科植物维氏紫玉盘（Xylopia vielana）的叶子中分离出了三种二聚愈创木烷类化合物维氏紫玉盘素A - C（vielanin A - C），并通过质谱和核磁共振光谱对其结构进行了鉴定，分别为1 - 3。化合物1的结构包含一个桥环体系，可能是由两种不同的愈创木烷单体通过狄尔斯-阿尔德反应形成的。化合物2和3代表通过[2 + 2]环加成由两个相等的愈创木烷部分正式生成的对称环丁烷。
