Herein we report a summary of the synthetic development of LY3202626 from the initial discovery route to a final route that was scaled to make 150 kg. Key developments include the use of a [3 + 2] cyclization to set the cis ring junction of the formed isoxazoline, a one-pot thiazine formation, and three different ways to install the aniline: (1) Cu-catalyzed azide coupling and reduction, (2) nitration
本文中,我们概述了LY3202626从最初的发现路线到最终制造成150千克最终路线的合成开发过程。关键的发展包括使用[3 + 2]环化来设置形成的
异恶唑啉的顺式环结,一锅
噻嗪的形成以及三种不同的
苯胺安装方法:(1)
铜催化的
叠氮化物偶联和还原,(2)硝化和还原,以及(3)Buchwald与乙酰胺偶联。