The circular dichroism spectra of 1 -L-/D-ValOMe showed a split cotton effect in Soret region, while those of 1 -L-/D-PheOMe showed no split cotton effect.

• 圆二色光谱的研究表明，主体 1 分别与L型和D型氨基酸酯缔合表现出完全对称的圆二色谱图。