We report herein the development of two efficient synthetic routes for the preparation of a key fragment required for the synthesis of potent drug candidates of Hepatitis B virus. The ethyl 3-fluoro-1-H-pyrrole-2-carboxylate scaffold was synthesized from readily available starting materials in good overall yields. The scalability of one of the developed routes was demonstrated and afforded the desired
我们在此报告了两种有效的合成路线的发展,这些路线用于制备合成乙型肝炎病毒的有效候选药物所需的关键片段。从容易获得的起始原料以良好的总产率合成3-
氟-1- H-
吡咯-2-羧酸乙酯骨架。演示了其中一种开发路线的可扩展性,并以良好的收率和优异的纯度(99%)提供了所需的目标。