γ-Amino Alcohols via Organocascade Reactions Involving Dienamine Catalysis
作者:Chandrakumar Appayee、Americo J. Fraboni、Stacey E. Brenner-Moyer
DOI:10.1021/jo3017007
日期:2012.10.5
Enantioenriched β-functionalized-γ-amino alcohols were produced from simple achiral enals in one flask by combining dienamine- and iminium-catalyzed intermolecular reactions. Reaction products are precursors of γ-amino acids, γ-lactams, and pyrrolidines; one was employed in a synthesis of γ-amino acid (S)-vigabatrin, the bioactive enantiomer of Sabril.
Based on the X-ray crystallography of recombinant BACE1 and a hydroxyethylamine-type peptidicinhibitor, we introduced a cross-linked structure between the P1 and P3 side chains of the inhibitor to enhance its inhibitoryactivity. The P1 and P3 fragments bearing terminal alkenes were synthesized, and a ring-closing metathesis of these alkenes was used to construct the cross-linked structure. Evaluation