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Alkaloids from Lindera aggregata

机译:乌Lind的生物碱

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摘要

Eight alkaloids, including a new compound, (+)-norboldine acetate (1), and seven known ones, (+)-norboldine (2), (+)-boldine (3), (+)-laurotetanine (4), (+)-N-methyllaurotetanine (5), (+)-reticuline (6), (-)-pronuciferine (7), and pallidine (8) were isolated from the roots of Lindera aggregata. The structures of these alkaloids were determined by spectroscopic and chemical methods, especially 2D NMR techniques, which also allowed the first full NMR assignments of alkaloids 2, 4 and 5. Among them, the 1D NMR chemical shifts of (+)-norboldine (2) showed a remarkable environmental sensitive behavior. All the alkaloids were tested in cytotoxicity assays against L1210 and K562 tumor cell lines; only (+)-norboldine (2) showed weak activity against the L1210 cell line.
机译:八种生物碱,包括一种新的化合物,(+)-乙酸去甲冰片碱(1),和七种已知的生物碱,(+)-去甲冰片碱(2),(+)-甲冰片碱(3),(+)-月桂铁氨酸(4),从山茱Lind的根中分离出(+)-N-甲基月桂蛋白(5),(+)-网氨酸(6),(-)-pronuciferine(7)和法力定(8)。这些生物碱的结构是通过光谱和化学方法确定的,尤其是2D NMR技术,这也允许对生物碱2、4和5进行第一个完整的NMR分配。其中,(+)-降冰片碱(2)的1D NMR化学位移)表现出显着的环境敏感性行为。在针对L1210和K562肿瘤细胞系的细胞毒性试验中测试了所有生物碱。仅(+)-降冰片碱(2)对L1210细胞株显示出弱的活性。

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