申请人:KANEKA CORPORATION
公开号:US20150315145A1
公开(公告)日:2015-11-05
A problem to be solved by the present invention is to provide a process for producing an optically active bicyclic urea compound useful as an intermediate for β-lactamase inhibitor, in a simple and easy manner with high efficiency.
The present invention includes reacting a specific ester compound with a specific amine in the presence of a metal alkoxide and/or an alkaline earth metal salt to produce the corresponding amide compound, which is then reacted with phosgene or a phosgene equivalent, followed by, if necessary, treatment with an acid or a base, to produce an optically active bicyclic urea compound. This makes it possible to produce an optically active bicyclic urea compound in a simple and easy manner with high efficiency and in high optical purity, without using expensive reagents such as catalysts and condensation agents, and without passing through protection and deprotection steps.
本发明要解决的问题是提供一种生产光学活性双环脲化合物的方法,该方法可作为β-内酰胺酶抑制剂的中间体,在简单易行的同时高效率地进行。本发明包括在金属烷氧化物和/或碱土金属盐的存在下,将特定的酯化合物与特定的胺反应,生成相应的酰胺化合物,然后与光气或光气等效物反应,如有必要,经过酸或碱处理,生成光学活性的双环脲化合物。这使得可以在不使用昂贵的催化剂和缩合剂,以及不经过保护和脱保护步骤的情况下,简单易行地高效率地生产光学活性的双环脲化合物,并且具有高的光学纯度。