An efficient synthesis of N3,4-diphenyl-5-(4-fluorophenyl)-2-isopropyl-1H-3-pyrrolecarboxamide, a key intermediate for atorvastatin synthesis
作者:Pramod.S Pandey、T Srinivasa Rao
DOI:10.1016/j.bmcl.2003.10.019
日期:2004.1
An efficient synthesis of N3,4-diphenyl-5-(4-fluorophenyl)-2-isopropyl-1H-3-pyrrolecarboxamide, a key intermediate for the synthesis of an effective HMG-CoA reductase inhibitor atorvastatin, is described. The synthesis is based on the 1,3-dipolar cycloaddition reaction of mesoionic munchnone (1,3-oxazolium-5-olate) with N1,3-diphenyl-2-propynamide leading to N-benzyl pyrrole, and N-debenzylation using
描述了N3,4-二苯基-5-(4-氟苯基)-2-异丙基-1H-3-吡咯甲酰胺的有效合成,这是合成有效HMG-CoA还原酶抑制剂阿托伐他汀的关键中间体。合成是基于中离子型蒙口酮(1,3-恶唑鎓5-油酸酯)与N1,3-二苯基-2-丙炔酰胺的1,3-偶极环加成反应生成N-苄基吡咯和使用钠进行N-脱苄基作用在液氨中作为关键步骤。