AbstractAzomethine imines, as a prominent class of 1,3‐dipolar species, hold great significance and potential in organic and medicinal chemistry. However, the reported synthesis of centrally chiral azomethine imines relies on kinetic resolution, and the construction of axially chiral azomethine imines remains unexplored. Herein, we present the synthesis of axially chiral azomethine imines through copper‐ or chiral phosphoric acid catalyzed ring‐closure reactions of N′‐(2‐alkynylbenzylidene)hydrazides, showcasing high efficiency, mild conditions, broad substrate scope, and excellent enantioselectivity. Furthermore, the biological evaluation revealed that the synthesized axially chiral azomethine imines effectively protect dorsal root ganglia (DRG) neurons by inhibiting apoptosis induced by oxaliplatin, offering a promising therapeutic approach for chemotherapy‐induced peripheral neuropathy (CIPN). Remarkably, the (S)‐ and (R)‐atropisomers displayed distinct neuroprotective activities, underscoring the significance of axial stereochemistry.
摘要偶氮甲基
亚胺是一类重要的 1,3-二极物种,在有机
化学和药物
化学中具有重要的意义和潜力。然而,已报道的中心手性偶氮甲基
亚胺的合成依赖于动力学解析,而轴向手性偶氮甲基
亚胺的构建仍有待探索。在此,我们介绍了通过
铜或手性
磷酸催化 N′-(2-炔基亚苄基)酰
肼的阖环反应合成轴向手性氮甲基
亚胺的方法,该方法效率高、条件温和、底物范围广、对映选择性好。此外,
生物学评价显示,合成的轴向手性氮甲基
亚胺能有效抑制
奥沙利铂诱导的神经细胞凋亡,从而保护背根神经节(DRG)神经元,为化疗诱导的周围神经病变(
CIPN)提供了一种很有前景的治疗方法。值得注意的是,(S)-和(R)-异构体显示出不同的神经保护活性,突出了轴向立体
化学的重要性。