作者:Stephen G. Davies、Paul M. Roberts、Rushabh S. Shah、James E. Thomson
DOI:10.1016/j.tetlet.2013.09.043
日期:2013.11
The first asymmetric synthesis of the marine alkaloid (−)-(S)-nakinadine C is described. This synthesis employs the conjugate addition of lithium dibenzylamide to an N-α-phenylacryloyl SuperQuat derivative followed by diastereoselective protonation of the intermediate enolate using 2-pyridone as the key step to introduce the stereochemistry. (−)-(S)-Nakinadine C was isolated in 13% yield over 9 steps
描述了海洋生物碱(-)-(S)-那金那丁C的第一个不对称合成。该合成方法是将二苄基酰胺锂共轭添加到N -α-苯基丙烯酰基SuperQuat衍生物中,然后使用2-吡啶酮作为引入立体化学的关键步骤,对中间烯醇化物进行非对映选择性质子化。通过9步从市场上可买到的atropic酸,98:2 dr [(Z : :(E)比率]和> 99%ee的条件下,以13%的产率分离出(-)-(S)-NakinadineC 。