Two new nimbolinin‐type limonoids, 12‐ethoxynimbolinins E and F (1 and 2, resp.), together with seven known analogues, 1α‐benzoyloxy‐3α‐acetoxyl‐7α‐hydroxy‐12β‐ethoxynimbolinin (3), nimbolinin B (4), meliatoosenin L (5), 14,15‐deoxy‐11‐oxohavanensin 3,12‐diacetate (6), 12α‐hydroxymeliatoosenin (7), toosendansin A (8), and toosendansin C (9), were isolated from the fruits of Melia toosendan. The structures of these compounds were elucidated by spectroscopic analysis. All the compounds were evaluated for their cytotoxicity against five tumor cell lines.

中文翻译：

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苦Mel的两种新的宁布林素类柠檬苦素

两个新的nimbolinin型柠檬苦素，12-ethoxynimbolinins E和F（1和2，RESP），用七个已知类似物，一起1 α苯甲酰-3 α -acetoxyl-7 α -羟基- 12 β -ethoxynimbolinin（3） ，nimbolinin B（4），meliatoosenin L（5），14,15-脱氧-11- oxohavanensin -3,12-二乙酸酯（6），12 α -hydroxymeliatoosenin（7），toosendansin A（8），和toosendansin C（9），是从Melia toosendan的果实中分离出来的。通过光谱分析阐明了这些化合物的结构。评价所有化合物对五种肿瘤细胞系的细胞毒性。