Synthesis of enantiopure free and N-benzyloxycarbonyl-protected 3-substituted homotaurines from naturally occurring amino acids
摘要:
Enantiopure N-benzyloxycarbonyl-protected and free 3-substituted homotaurines were synthesized from naturally occurring amino acids via N-benzyloxycarbonyl protection, Arndt-Eistert homologation, reduction, esterification with thioacetic acid, and oxidation with performic acid. The current method is a convenient, practical, and salt-free method for the synthesis of enantiopure 3-substituted homotaurine with moderate to good yields. (C) 2014 Elsevier Ltd. All rights reserved.
Synthesis of enantiopure free and N-benzyloxycarbonyl-protected 3-substituted homotaurines from naturally occurring amino acids
作者:Yongpeng Zheng、Jiaxi Xu
DOI:10.1016/j.tet.2014.05.098
日期:2014.8
Enantiopure N-benzyloxycarbonyl-protected and free 3-substituted homotaurines were synthesized from naturally occurring amino acids via N-benzyloxycarbonyl protection, Arndt-Eistert homologation, reduction, esterification with thioacetic acid, and oxidation with performic acid. The current method is a convenient, practical, and salt-free method for the synthesis of enantiopure 3-substituted homotaurine with moderate to good yields. (C) 2014 Elsevier Ltd. All rights reserved.
The kinetic resolution of oxazinones by alcoholysis: access to orthogonally protected β-amino acids
作者:Sarah A. Cronin、Stephen J. Connon
DOI:10.1039/d1ob01306h
日期:——
The catalytic, alcoholytic kinetic resolution of oxazinones is reported. A novel, stereochemically dense cinchonaalkaloid-basedcatalyst can facilitate the highly enantiodiscriminatory (S up to 101) ring-opening of oxazinones equipped with electrophilic aryl units to generate orthogonally protected β-amino acids for the first time.