3,3,3-Trifluoro-2-isocyanopropionates, new versatile building blocks for the introduction of trifluoromethyl groups into organic molecules [1]
摘要:
alpha-Trifluoromethyl-substituted alpha-amino acid esters 1 give N-formyl alpha-trifluoromethyl alpha-amino acid esters 2 on reaction with formic acid/acetic anhydride. 3,3,3-Trifluoro-2-isocyanopropionates 3 are obtained from 2 upon treatment with diphosgene/triethylamine.
mammalian cells, and as a consequence is an attractive target for selective inhibition. This paper describes the discovery of a novel family of HCV NS5B non-nucleoside inhibitors inspired by the bioisosterism between sulfonamide and phosphonamide. Systematic structural optimization in this new series led to the identification of IDX375, a potent non-nucleoside inhibitor that is selective for genotypes
Discovery of carboxypeptidase Y as a catalyst for the incorporation of sterically demanding α-fluoroalkyl amino acids into peptides
作者:Sven Thust、Beate Koksch
DOI:10.1016/j.tetlet.2003.12.007
日期:2004.2
The first example of a direct enzymatic coupling of two different, sterically demanding C-alpha-fluoroalkyl amino acids to amino acid nucleophiles is reported. N-Protected Ala methyl ester derivatives bearing a methyl-, difluoromethyl-, or trifluoromethyl group, respectively, instead of the alpha-proton were accepted as substrates by carboxypeptidase Y and could, therefore, be coupled directly to various nucleophiles. (C) 2003 Published by Elsevier Ltd.
3,3,3-Trifluoro-2-isocyanopropionates, new versatile building blocks for the introduction of trifluoromethyl groups into organic molecules [1]
alpha-Trifluoromethyl-substituted alpha-amino acid esters 1 give N-formyl alpha-trifluoromethyl alpha-amino acid esters 2 on reaction with formic acid/acetic anhydride. 3,3,3-Trifluoro-2-isocyanopropionates 3 are obtained from 2 upon treatment with diphosgene/triethylamine.
Burger, Klaus; Schierlinger, Christian; Hollweck, Wolfgang, Liebigs Annalen der Chemie, 1994, # 4, p. 399 - 406