Synthesis and evaluation of novel pyrazolidinone analogs of PGE2 as EP2 and EP4 receptors agonists
摘要:
Replacement of the hydroxy cyclopentanone ring in PGE(2) with chemically more stable heterocyclic rings and substitution of the unsaturated alpha-alkenyl chain with a metabolically more stable phenethyl chain led to the development of potent and selective analogs of PGE(2). Compound 10f showed the highest potency and selectivity for EP4 the receptor. (c) 2007 Elsevier Ltd. All rights reserved.
镍( II )催化的γ-烷基单取代的α,β-不饱和丁内酰胺与α,β-不饱和羰基化合物的不对称直接乙烯基Michael加成,以良好的收率和令人满意的对映选择性得到γ,γ-二烷基取代的丁内酰胺。基于该反应还开发了串联催化不对称插烯迈克尔加成/分子内迈克尔加成,这使得能够构建具有三个连续立体碳中心的对映体富集的八氢吲哚。