of orientational chirality were conducted by taking advantage of N-sulfinylimine-assisted nucleophilic addition and modified Sonogashira catalytic coupling systems. Orientational isomers were controlled completely using alkynyl/alkynyl levers [C(sp)-C(sp) axis] with absolute configuration assignment determined by X-ray structural analysis. The key structural element of the resulting orientational chirality
在这项研究中,利用 N-亚磺
酰亚胺辅助的亲核加成和修饰的 Sonogashira 催化偶联系统,进行了一系列取向手性手性靶点的设计和不对称合成。取向异构体使用炔基/炔基杠杆 [C(sp)-C(sp) 轴] 完全控制,并通过 X 射线结构分析确定绝对构型分配。所得定向手性的关键结构元件具有远程通过空间阻塞的独特特征。进行了 40 个多步骤合成实例,产量中等到良好,取向选择性极佳。几个手性取向
氨基靶标与天然和医药产品的支架相连,显示出未来潜在的制药和医学应用。