Concise Synthesis of (+)‐[<sup>13</sup>C<sub>4</sub>]‐Anatoxin‐a by Dynamic Kinetic Resolution of a Cyclic Iminium Ion
作者:Jacob J. Lacharity、Artur K. Mailyan、Karen Y. Chen、Armen Zakarian
DOI:10.1002/anie.202004464
日期:2020.7.6
An asymmetric total synthesis of [13C4]‐anatoxin‐a ([13C4]‐1 ) has been developed from commercially available ethyl [13C4]‐acetoacetate ([13C4]‐15 ). The unique requirements associated with isotope incorporation inspired a new, robust, and highly scalable route, providing access to 0.110 g of this internal standard for use in the detection and precise quantification of anatoxin‐a in freshwater. A highlight
[ 13 C 4 ]-anatoxin-a ([ 13 C 4 ]- 1 )的不对称全合成是由市售的[ 13 C 4 ]-乙酰乙酸乙酯([ 13 C 4 ]- 15 )开发而成。与同位素掺入相关的独特要求激发了一种新的、稳健的、高度可扩展的路线,提供了 0.110 g 的内标,用于淡水中阿毒素-a 的检测和精确定量。该合成的一个亮点是利用环状亚胺离子外消旋作用在对映选择性 Morita-Baylis-Hillman (MBH) 环化中实现动态动力学拆分的方法。