Azoalkene Route to Methyl 2,5-Dimethyl-4-[2-(phenylmethyl)benzoyl]-1<i>H</i>-pyrrole-3-carboxylate (FPL 64176) and Analogues: Synthesis of 1-(BOC-amino)pyrrole-3-carboxylates and Their Conversion to 1<i>H</i>-Pyrroles via 1-Aminopyrroles
作者:Andrew J. G. Baxter、John Fuher、Simon J. Teague
DOI:10.1055/s-1994-25440
日期:——
A new route to the calcium channel activator methyl 2,5-dimethyl-4-[2-(phenylmethyl)benzoyl]-1H-pyrrole-3-carboxylate (FPL 64176) and analogues is presented. Reaction of activated diones with BOC-azoalkenes gave pyrroles with the required functionality but having an extra 1-(BOC-amino) substituent. This group was readily removed in two steps to give the required 1H-pyrroles.
本文介绍了一种获得钙通道激活剂 2,5-二甲基-4-[2-(苯基甲基)苯甲酰基]-1H-吡咯-3-羧酸甲酯(FPL 64176)及其类似物的新方法。活化的二阴离子与 BOC-偶氮烯反应后,得到了具有所需官能度但多了一个 1-(BOC-氨基)取代基的吡咯。这个基团很容易通过两个步骤去除,从而得到所需的 1H 吡咯。