his collaborators; but no precise connexion between the alkaloids has yet been disclosed, though many reactions and transformations suggest the close similarity of their molecular structure. On oxidation with chromic acid1, vomicine yields an acid, C17H22O5N2, 3H2O, which characteristically loses carbon dioxide at 130°, affording a base, C16H22O2N2. We have now found that the same acid can be obtained
VOMICINE,C22H24O4N2,
马钱子碱的同系物,C21H22O2N2,已经被维兰德和他的合作者研究过;但尚未公开
生物碱之间的精确联系,尽管许多反应和转化表明它们的分子结构非常相似。在用
铬酸氧化时,vomicine 产生一种酸,C17H22O5N2, 3H2O,其特征是在 130°时失去
二氧化碳,得到碱,C16H22O2N2。我们现在发现,同样的酸可以通过用
铬酸氧化 N-甲基-仲-假
马钱子碱或更好的 H-甲基-仲-假
马钱子碱来获得。身份尚未通过直接比对确认*;但从分析 (3H2O)、旋转功率、熔点和加热行为来看,几乎可以肯定这一点。所得碱具有以下组成,