α,γ-Diamino Acids: Asymmetric Synthesis of New Constrained 6-Amino-3-azabicyclo[3.2.1]octane-6-carboxylic Acids
作者:Francesco Caputo、Cristian Cattaneo、Francesca Clerici、Maria Luisa Gelmi、Sara Pellegrino
DOI:10.1021/jo061391o
日期:2006.10.1
The synthesis of two new diastereomeric 6-amino-3-azabicyclo[3.2.1]octane-6-carboxylic acids exo- and endo-8,9 is reported using exo- and endo-norbornene amino acids as chiral building blocks. This method provides a fast access to optically pure amino acids 8 and 9 which can be considered both α,γ- and α,δ-diamino acids containing sterical constraints and characterized by α,α-disubstitution.
合成两种新的非对映异构的6-氨基-3-氮杂双环[3.2.1]辛烷-6-羧酸外切-和内- 8,9是使用报道外切和内切降冰片烯氨基酸作为手性结构单元。该方法提供了对光学纯氨基酸8和9的快速访问,这些氨基酸既可以视为具有空间限制并以α,α-二取代为特征的α,γ-和α,δ-二氨基酸。