In the present work, we report the isolation of five alkaloids from the seeds of Erythrina rubrinervia. Four of the isolated alkaloids are erythrinoid type alkaloids which were identified as erysodine (1), erysovine (2), erythraline (3) and erysotrine (4), plus an indolic alkaloid which was identified as hypaphorine (5). The analysis of spectroscopic data for the alkaloid l-hypaphorine shows that the published structure (5a) must be revised, and the correct structure is that depicted as the structure 5c. The chemical structures were elucidated by full spectroscopic analysis. The chemotaxonomic significance of those findings in the genus Erythrina is also discussed.

在目前的工作中，我们报告了从Erythrina rubrinervia种子中分离出五种生物碱。分离出的四种生物碱是红豆碱型生物碱，被鉴定为红豆碱 ( 1 )、红豆碱 ( 2 )、赤藓碱 ( 3 ) 和红豆碱 ( 4 )，外加一种被鉴定为海普林 ( 5 )的吲哚类生物碱。生物碱l - hypaphorine的光谱数据分析表明，必须修改已发表的结构（5a），正确的结构为结构5c. 通过全光谱分析阐明了化学结构。还讨论了刺桐属中这些发现的化学分类学意义。