作者:Robert V. Hoffman、Junhua Tao
DOI:10.1021/jo981334y
日期:1999.1.1
A simple, stereocontrolled synthesis of monofluoro ketomethylene dipeptide isosteres has been developed. N-Tritylated ketomethylene dipeptide isosteres, 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
已经开发了简单的立体控制的单氟酮亚甲基二肽等排体的合成。由N-三苯甲基化的氨基酸制备的N-三苯甲基化的酮亚甲基二肽等位基因被转化为其Z-TMS烯醇醚并用Selectfluor进行氟化。N-三苯甲基胺基和C-2处的烷基之间存在协同立体控制。该方法很短(六个步骤),非对映选择性(85-> 95%)和对映选择性(> 95%)。