Diastereoselective Synthesis of<i>N,N</i>-Dibenzyl-Protected Aminoalkyl Hydroxyethylamines: Key Building Blocks for Hydroxyethylamine-Based BACE1 Inhibitor
作者:Jie Wu、Shanyun Gao、Guochao Liao、Hansen Lin、Aihua Nie
DOI:10.1080/00397911.2011.572217
日期:2012.10
L-Amino acids were reduced with NaBH4 followed by reacting with benzyl bromide to give N,N-dibenzyl-protected aminoalkyl ethanol 3, which in turn underwent a Swern oxidation, a Johnson-Corey-Chaykovsky reaction, and a nucleophilic reaction to afford N, N-dibenzyl-protected aminoalkyl hydroxyethylamine 6 with a diastereomer ratio 2.5 similar to 2.9:1 of (2R, 3S)-6:(2S, 3S)-6.