Two new quaternary indole alkaloids 5',6'-dehydroguiachrysine (1) and 5',6'-dehydroguiaflavine (2) were isolated from Strychnos guianensis stem bark. Their structures were determined by analysis of spectral data. Their inhibitory effects on neuromuscular transmission are also reported and compared to that of other quaternary alkaloids.

译文

从马钱子茎皮中分离出两种新的季吲哚生物碱5 ',6'-脱氢桂花碱 (1) 和5 ',6'-脱氢桂花碱 (2)。通过分析光谱数据确定它们的结构。还报道了它们对神经肌肉传递的抑制作用,并与其他第四纪生物碱进行了比较。

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