The Effect of Backbone Stereochemistry on the Folding of Acyclic β<sup>2, 3</sup>-Aminoxy Peptides
作者:Yu-Hui Zhang、Kesheng Song、Nian-Yong Zhu、Dan Yang
DOI:10.1002/chem.200901471
日期:2010.1.11
foldamer, β‐aminoxy peptides have the ability to adopt novel βNOturns or βNOhelices in solution. Herein, we describe a new subclass of β‐aminoxy peptide, that is, peptides of acyclic β2, 3‐aminoxy acids (NH2OCHR1CHR2COOH), in which the presence of two chiral centers provides insight into the effect of backbone stereochemistry on the folding of β‐aminoxy peptides. Acyclic β2, 3‐aminoxy peptides with
Deracemization of diastereomerically pure syn- and anti-α-substituted β-hydroxyesters by Novozyme 435 lipase and determination of their absolute configuration by NMR spectroscopy
作者:Christian Trapp、Kateřina Barková、Marek Jan Pecyna、Corinna Herrmann、Annett Fuchs、Dieter Greif、Martin Hofrichter
DOI:10.1016/j.mcat.2021.111578
日期:2021.6
Enantiomerically pure α-substituted β-hydroxyesters are important chiral building blocks for ligands, auxiliaries and β-lactam antibiotics. A two-step chemo-enzymatic procedure using lipase as biocatalyst is an efficient way to synthesize such products. To date, the methods described are limited to molecules that do not contain a chiral center adjacent to the racemic carbinol, and furthermore, they