The complete structure of bruceine C has been established by single crystal X-ray analysis of the tetra-O-acetyl derivative. The structure of bruceantinol, a potent antileukaemic quassinoid, has been revised and shown to be 4′-O-acetyl bruceine C.

中文翻译：

---

抗白血病的类quassinoids：鸟氨酸C的结构（X射线分析）和鸟氨酸的修订结构

通过对四-O-乙酰基衍生物的单晶X射线分析已确定了水杨酸C的完整结构。Bruceantinol是一种强效抗白血病的类胡萝卜素，其结构已被修改并显示为4'-O-乙酰基BruceineC。