Stereoselective Synthesis of the Halaven C14-C26 Fragment from<scp>D</scp>-Quinic Acid: Crystallization-Induced Diastereoselective Transformation of an α-Methyl Nitrile
作者:Francis Belanger、Charles E. Chase、Atsushi Endo、Francis G. Fang、Jing Li、Steven R. Mathieu、Annie Z. Wilcoxen、Huiming Zhang
DOI:10.1002/anie.201501143
日期:2015.4.20
Crystallization‐induced diastereoselective transformation (CIDT) of an α‐methyl nitrile completes an entirely non‐chromatographic synthesis of the halichondrin B C14–C26 stereochemical array. The requisite α‐methyl nitrile substrate is derived from D‐quinic acid through a series of substrate‐controlled stereoselective reactions via a number of crystalline intermediates that benefit from a rigid polycyclic
结晶诱导的α-甲基腈的非对映选择性转化(CIDT)完成了卤虫酮蛋白B C14-C26立体化学阵列的完全非色谱合成。必需的α-甲基腈底物是通过一系列受底物控制的立体选择反应,由D-奎宁酸衍生而来的,这些反应是通过许多受益于刚性多环模板的结晶中间体而进行的。因此,Halaven C14–C26片段中的所有四个立体异构中心均来自单一手性来源D-奎宁酸。