Investigation of the weak-base fractions of two species, B. microphylla Sieb. et Zucc. var. suffruticosa Makino and B. microphylla Sieb. et Zucc. var. suffruticosa Makino forma major Makino, has led to the isolation of ten new alkaloids. In addition, another new alkaloid was isolated from the strong-base fraction of the latter species. These alkaloids are structurally closely related, and their interconversion
调查的两个物种,B。microphylla Sieb的弱碱部分。et Zucc。变种 suffruticosa Makino和B. microphylla Sieb。et Zucc。变种 suffruticosa Makino forma主要的Makino导致分离出十种新
生物碱。此外,从后者物种的强碱部分中分离出了另一种新的
生物碱。这些
生物碱在结构上密切相关,并且已经确定了它们与其他已知
生物碱的相互转化。