Asymmetric Synthesis of α-Amino Acids by Reduction of N-tert-Butanesulfinyl Ketimine Esters
摘要:
A highly regio- and diastereoselective reduction of various N-tert-butanesulfinyl ketimine esters with L-Selectride resulting in the formation of alpha-amino acids is reported. This method is quite general and also practical for the preparation of both enantiomers of aryl or aliphatic a-amino acids in high yields.
Asymmetric Synthesis of α-Amino Acids by Reduction of N-tert-Butanesulfinyl Ketimine Esters
摘要:
A highly regio- and diastereoselective reduction of various N-tert-butanesulfinyl ketimine esters with L-Selectride resulting in the formation of alpha-amino acids is reported. This method is quite general and also practical for the preparation of both enantiomers of aryl or aliphatic a-amino acids in high yields.
Stereochemical Assignment of the Protein-Protein Interaction Inhibitor JBIR-22 by Total Synthesis
作者:Alan R. Healy、Miho Izumikawa、Alexandra M. Z. Slawin、Kazuo Shin-ya、Nicholas J. Westwood
DOI:10.1002/anie.201411141
日期:2015.3.23
activity associated with a subfamily of the tetramic acid class of natural products. Despite the fact that members of this subfamily act as protein–protein interaction inhibitors that are of relevance to proteasome assembly, no synthetic work has been reported. This may be due to the fact that this subfamily contains an unnatural 4,4‐disubstitued glutamic acid, the synthesis of which provides a key challenge