Repeated column chromatography using Sephadex LH-20, silica gel (SiO2), and octadecyl SiO2 (ODS) as well as preparative HPLC column chromatography led to isolation of a new dibenzocyclooctadiene lignan along with four known ones, gomisin L2 (1), L1 (2), M1 (3), and M2 (4). Their chemical structures were fixed based on MS, IR, and NMR data analyses. In addition, the stereochemistry of atropisomers, the absolute configuration of the axial chirality in a biphenyl structure, was confirmed by a CD experiment. The new lignan was named gomisin M3 (5).

中文翻译：

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来自五味子(Turcz.) Baill 的新型二苯并环辛二烯木脂素。水果

使用 Sephadex LH-20、硅胶 (SiO2) 和十八烷基 SiO2 (ODS) 的重复柱色谱以及制备型 HPLC 柱色谱分离出一种新的二苯并环辛二烯木脂素以及四种已知的木脂素，gomisin L2 (1)、L1 ( 2)、M1 (3) 和 M2 (4)。它们的化学结构是根据 MS、IR 和 NMR 数据分析确定的。此外，阻转异构体的立体化学，即联苯结构中轴向手性的绝对构型，通过 CD 实验得到证实。新的木脂素被命名为gomisin M3 (5)。