Long-Range Diastereoselectivity in an Ugi Reaction: Stereocontrolled and Diversity-Oriented Synthesis of Tetrahydrobenzoxazepines
作者:Luca Banfi、Alessandro Bagno、Andrea Basso、Carlo De Santis、Renata Riva、Federico Rastrelli
DOI:10.1002/ejoc.201300541
日期:2013.8
protected 1,2-amino alcohols have been convergently converted into a series of 2,3-dihydrobenzo[f][1,4]oxazepines, which undergo an Ugi–Joullie multicomponent reaction with unusual long-range diastereoselectivity. This protocol allows the diastereoselective preparation, in only two steps, of a series of drug-like tetrahydrobenzo[f][1,4]oxazepines, with the combinatorial introduction of four diversity points
水杨醛和受保护的 1,2-氨基醇已被会聚转化为一系列 2,3-二氢苯并[f][1,4] 氧氮杂卓,它们进行 Ugi-Joullie 多组分反应,具有不寻常的远程非对映选择性。该协议允许非对映选择性制备,只需两个步骤,一系列类似药物的四氢苯并 [f] [1,4] 氧氮杂,并结合引入四个多样性点。还证明了获得对映体纯形式的这些化合物的可能性。