Four new limonoids, tociliatonoid B-E (–) were obtained from the EtOAc extract of the twigs and leaves of var. . Their structures were elucidated through comprehensive spectroscopic and X-ray crystallographic analysis. Compounds – are rare limonoids which feature unusual 3-substituted 1,5-dihydro-2-pyrrol-2-one or maleimide ring moiety at C-17 and Compound possess an aldehyde group at C-4.

中文翻译：

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Tociliatonoid BE，来自 Toona ciliata var. 的新型柠檬苦素类化合物。云南松

从 var. 的小枝和叶子的 EtOAc 提取物中获得了四种新的柠檬苦素类化合物 tociliatonoid BE (–)。。通过综合光谱和 X 射线晶体学分析阐明了它们的结构。化合物 – 是罕见的柠檬苦素，其特征是在 C-17 处具有不寻常的 3-取代 1,5-二氢-2-吡咯-2-酮或马来酰亚胺环部分，并且化合物在 C-4 处具有醛基。