(RS)-2-methyl-4-octanol were resolved by using (S)-2-methoxy-2-(1-naphthyl)propanoic acid [(S)-MalphaNP acid]. The specific stereochemistry of each MalphaNP ester was elucidated by 2D NMR analyses, and shielding by the 1-naphthyl group was observed in both the 1H- and 13C-NMR spectra. Solvolysis of the individual (S)-MalphaNP esters gave four single-enantiomer alcohols. The normal-phase HPLC elution order
通过使用(S)-2-甲氧基-2-(1-
萘基)
丙酸[(S)-MalphaNP酸]拆分(RS)-
β-紫罗兰醇和(RS)-
2-甲基-4-辛醇。通过2D NMR分析阐明了每种MalphaNP酯的具体立体
化学,并且在1H-NMR和13C-NMR光谱中均观察到1-
萘基的屏蔽作用。各个(S)-MalphaNP酯的溶剂分解得到四种单对映体醇。还讨论了每种MalphaNP酯的正相HPLC洗脱顺序。