First Stereoselective Synthesis of (1<i>R</i>,2<i>R</i>,4<i>R</i>)- and (1<i>S</i>,2<i>R</i>,4<i>S</i>)-2-Substituted-1-azabicyclo[2.2.1]heptanes
作者:Pablo Etayo、Ramón Badorrey、María D. Díaz-de-Villegas、José A. Gálvez
DOI:10.1002/ejoc.200801216
日期:2009.3
The firststereoselectivesynthesis of two diastereomeric 1-azabicyclo[2.2.1]heptanes substituted at the 2-position from an easily accessible (R)-2-substituted-4-piperidone is reported. The synthetic route involves the asymmetric one-carbon homologation of a chiral ketone followed by an intramolecular SN2-type cyclisation and led to target compounds in high overall yield by using a simple procedure