madang BL. a bisbenzylisoquinoline alkaloid was obtained as the major antimalarial principle. The physicochemical properties of the alkaloid were consistent with the proposed structure of dehatrine. However, the alkaloid isolated by us was shown to be a mixture of two rotational isomers. The X-ray crystallographic analysis of 1 has shown that two rotamers are incorporated in a single crystal in 1:1 ratio
                                    通过
生物分析指导分离印度尼西亚药用植物马齿BLBilschmiedia madang BL的
化学成分。获得了双苄基
异喹啉生物碱作为主要的抗疟原药。该
生物碱的理化性质与拟定的脱hatrine结构一致。然而,我们分离出的
生物碱显示为两种旋转异构体的混合物。1的X射线晶体学分析表明,两个旋转异构体以1:1的比例掺入单晶中。通过广泛使用2D(COSY和COLOC)技术,将1的复杂NMR光谱定义为两种旋转异构体的混合物。已显示出Dehatrine具有与
奎宁相似的活性,可显着抑制培养的恶性疟原虫K1菌株(对
胆碱有抵抗力)的生长。