The Asymmetric Total Synthesis and Configuration Confirmation of Aplysiaenal and Nhatrangin A, Truncated Derivatives of Aplysiatoxin and Oscillatoxin
作者:Mana Morishita、Kohei Hada、Masaki Kita、Toshio Nishikawa
DOI:10.1021/acs.jnatprod.3c00077
日期:——
Asymmetric total syntheses of aplysiaenal (1) and nhatrangin A (2), truncated derivatives of the aplysiatoxin/oscillatoxin family of marine natural products, from configurationally defined intermediates are described. NMR spectra of our synthesized nhatrangin A did not match with either those obtained from authentic samples of the natural product or material obtained via two other total syntheses,
描述了来自构型确定的中间体的海兔醛 ( 1 ) 和纳曲嗪 A ( 2 )(海洋天然产物海兔毒素/振荡毒素家族的截短衍生物)的不对称全合成。我们合成的 nhatrangin A 的 NMR 谱与从天然产物的真实样品或通过其他两次全合成获得的材料获得的谱不匹配,但与从第三次全合成中获得的样品获得的谱相似。通过独立合成全合成中使用的片段,我们能够确认 nhatrangin A 的构型,并澄清光谱数据的差异是由于羧酸部分的盐形成造成的。