A Stereocontrolled Synthesis of Monofluoro Ketomethylene Dipeptide Isosteres
作者:Robert V. Hoffman、Junhua Tao
DOI:10.1021/jo981334y
日期:1999.1.1
A simple, stereocontrolled synthesis of monofluoro ketomethylene dipeptideisosteres has been developed. N-Tritylated ketomethylene dipeptideisosteres, prepared from N-tritylated amino acids, are converted to their Z-TMS enol ethers and fluorinated with Selectfluor. There is cooperative stereocontrol between the N-tritylamine group and the alkyl group at C-2. The method is short (six steps), diastereoselective