Synthesis of Diastereomeric Pyrrolidine Sulfamides via Anchimerically Assisted Nucleophilic Substitution Reactions
作者:Jorge Vargas-Caporali、Arie van der Lee、Georges Dewynter、Eusebio Juaristi
DOI:10.2174/1570178615666180110162202
日期:2018.4.12
type of diastereomeric amino alcohols to the above-mentioned nucleophile usually leads to the formation of piperidines via ring expansion, either through classical nucleophilic substitution or the Mitsunobu version, only the pyrrolidine derivatives were generated with retention of configuration on the exocyclic stereocenter, owing to the neighboring group participation (internal backside nucleophilic
在开发方便的合成路线的关键步骤中,Mitsunobu反应用于从(R)-或(S)-[(S)-1-苄基吡咯烷丁-2-基]()对映选择性制备吡咯烷-磺酰胺配体苯基)甲醇,并使用叔丁基吡咯烷-1--1-基磺酰基氨基甲酸酯作为非常规亲核源。尽管有充分的文献证明,这类非对映体氨基醇暴露于上述亲核试剂通常会导致环扩环形成哌啶,无论是通过经典亲核取代还是Mitsunobu版本,只有吡咯烷衍生物得以保留由于邻近基团的参与(内部背面亲核取代,SNib),在环外立体中心的构型改变。