A new neolignan, named (7′S,8′R)-5,3′-dimethoxy-4,4′,9′-trihydroxy-2-8′,9-O-7′-neolignan (1), along with two known compounds, secoisolariciresinol (2) and lariciresinol (3), was isolated from the whole plant of Justicia procumbens L. The structure of 1 was established by spectroscopic methods, and the absolute configuration was determined using circular dichroic (CD) spectra.

中文翻译：

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来自 Justicia Procumbens 的新木脂素

一种新的新木脂素，命名为 (7'S,8'R)-5,3'-dimethoxy-4,4',9'-trihydroxy-2-8',9-O-7'-neolignan (1)，沿用两种已知化合物开环异落叶松树脂醇 (2) 和落叶松树脂醇 (3) 从 Justicia procumbens L 的全株中分离出来。 1 的结构通过光谱方法建立，绝对构型使用圆二色 (CD) 光谱确定。