作者:Ahmed M. Zaed、Andrew Sutherland
DOI:10.1039/c0ob00219d
日期:——
A new approach for the stereoselective synthesis of the bicyclic guanidine alkaloid (+)-monanchorin has been developed using a palladium(II)-catalysed MOM-ether directed Overman rearrangement to establish the second stereogenic centre and a cross metathesis reaction to generate the carbon backbone. In the final stage, a one-pot acid mediated deprotection of aldehyde, guanidine and hydroxyl groups gave
已经开发了一种新的立体选择性合成双环胍生物碱(+)-菊酯的方法,该方法使用钯(II)催化的MOM-醚定向的Overman重排来建立第二个立体生成中心,并进行交叉易位反应以生成碳骨架。在最后阶段,一锅酸介导的醛,胍和羟基的脱保护得到中间体,该中间体容易环化成(+)-monanchorin。