Protecting-Group-Free Total Synthesis of (<i>E</i>)- and (<i>Z</i>)-Alstoscholarine
作者:Thibaud Gerfaud、Chunsong Xie、Luc Neuville、Jieping Zhu
DOI:10.1002/anie.201100257
日期:2011.4.18
Looking for hidden symmetry: The first asymmetric total synthesis of pentacyclic compounds 1 and 2 has been accomplished starting from a cyclic meso‐anhydride. The absolute configuration of the final products was set by an organocatalytic desymmetrization of the meso‐anhydride. The economic synthesis is protecting‐group‐free and confirms the assigned absolute configuration.
寻找隐藏的对称性:五环化合物1和2的第一个不对称全合成是从环状内消旋酸酐开始的。最终产物的绝对构型是由内消旋酸酐的有机催化脱对称作用确定的。经济综合性是无保护组的,并确认了分配的绝对配置。