Directed Reductive Amination of β-Hydroxy-ketones: Convergent Assembly of the Ritonavir/Lopinavir Core
作者:Dirk Menche、Fatih Arikan、Jun Li、Sven Rudolph
DOI:10.1021/ol062715y
日期:2007.1.1
3-syn-amino alcohols (6) is reported. The operationally simple protocol uses Ti(iOPr)4 for coordination of the intermediate imino alcohol (5) and PMHS as the reducing agent. The method was expanded to an asymmetric aldol reductive amination sequence to allow a highly convergent synthesis of the hydroxy-amine core of the HIV-protease inhibitors ritonavir and lopinavir. [reaction: see text].
报道了一种用于β-羟基酮的定向还原胺化的有效方法(3),用于立体选择性地制备1,3-syn-氨基醇(6)。操作简单的方案使用Ti(iOPr)4来协调中间体亚氨基醇(5)和PMHS作为还原剂。该方法被扩展为不对称的羟醛还原胺化序列,以允许高度聚合合成HIV蛋白酶抑制剂ritonavir和lopinavir的羟胺核心。[反应:请参见文字]。