目的 研究凹叶厚朴Magnolia officinalis var. biloba叶的化学成分。方法 采用硅胶、凝胶及MCI等柱色谱进行分离纯化，经波谱解析确定化合物结构。结果 从凹叶厚朴叶75%乙醇提取物分离得到12个化合物，分别鉴定为鹅掌揪树脂醇A（1）、6, 7-二甲氧基香豆素（2）、吲哚-3-甲醛（3）、S-(＋)-去氢催吐萝芙叶醇（4）、黑麦草内酯（5）、厚朴酚（6）、反式对羟基桂皮醛（7）、和厚朴酚（8）、对烯丙基苯酚（9）、正二十九烷酸（10）、蚱蜢酮（11）、紫丁香苷（12）。结论 1～5、7、9～11为首次从凹叶厚朴和木兰属植物中分离得到。

Objective To study the chemical constituents in the leaves of Magnolia officinalis var. biloba. Methods Compounds were isolated by various chromatographic techniques and identified by spectral analyses. Results Twelve compounds were isolated in the 75% ethanol extract from the leaves of M. officinalis var. biloba and identified as lirioresinol-A (1), 6, 7-dimethoxycoumarin (2), indole-3-aldehyde (3), S-(+)-dehydrovomifoliol (4), loliolide (5), magnolol (6), trans-p-coumaryl aldehyde (7), honokiol (8), 4-allylphenol (9), nonacosanoic acid (10), grasshopper ketone (11), and syringin (12). Conclusion Compounds 1—5, 7, 9—11 are first isolated from the leaves of M. officinalis var. biloba and plants of this genus.