Synthesis of Amino Acids Bearing Halodifluoromethyl Moieties and Their Application to p53-Derived Peptides Binding to Mdm2/Mdm4
作者:Sebastian Vaas、Markus O Zimmermann、Theresa Klett、Frank M Boeckler
DOI:10.2147/dddt.s406703
日期:——
backbone, and incorporation of unnatural amino acids. One approach previously established, is the use of halogenated aromatic amino acids. In principle, they are thereby enabled to form halogen bonds (XB). In this study, we focus on the -R-CF2X moiety (R = O, NHCO; X = Cl, Br) as an uncommon halogenbonddonor. These groups enable more spatial variability in protein–protein interactions. The chosen approach
The oxidative C-H aryloxydifluoromethylation and arylthiodifluoromethylation of heteroaromatic compounds through the decarboxylation of easily accessible aryloxydifluoroacetic acids and arylthiodifluoroacetic acids, respectively, are disclosed. These reactions are promoted by the combination of catalytic AgNO3 and Selectfluor or K2S2O8 to give ArOCF2- and ArSCF2-substituted heteroaromatic compounds in moderate to high yields.
<i>O</i>-Trifluoromethylation of Phenols: Access to Aryl Trifluoromethyl Ethers by <i>O</i>-Carboxydifluoromethylation and Decarboxylative Fluorination
作者:Min Zhou、Chuanfa Ni、Zhengbiao He、Jinbo Hu
DOI:10.1021/acs.orglett.6b01779
日期:2016.8.5
A new strategy for the synthesis of aryl trifluoromethyl ethers (ArOCF3) by combining O-carboxydifluoromethylation of phenols and subsequent decarboxylativefluorination is reported. This protocol allows easy construction of functionalized trifluoromethoxybenzenes and trifluoromethylthiolated arenes (ArSCF3) in moderate to good yields. Moreover, it utilizes accessible and inexpensive reagents sodium