Crassine (1), liriodenine, (–)-anonaine, N-methylcorydaldine, p-hydroxybenzoic acid, p-hydroxybenzaldehyde, (+)-pinitol, β-sitosterol, stigmasterol, 11,13-dehydrolanuginolide, and costunolide were isolated from the roots of Michelia crassipes (Magnoliaceae). Among them, crassine is a new dimer of morpholine. The structure of crassine (1) was characterized and identified by spectral analyses.

中文翻译：

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含笑的吗啉二聚体

从中分离出了Crassine（1），liriodenine，（–）-腺嘌呤，N-甲基codaldaldine，对羟基苯甲酸，对羟基苯甲醛，（+）-松醇，β-谷甾醇，豆固醇，11,13-脱氢羊毛癸内酯和木香内酯。含笑的根。其中，可卡因是吗啉的新二聚体。通过光谱分析表征并鉴定了可卡因（1）的结构。