A Novel Enantioselective Alkylation and Its Application to the Synthesis of an Anticancer Agent
作者:Shen-Chun Kuo、Frank Chen、Donald Hou、Agnes Kim-Meade、Charles Bernard、Jinchu Liu、Stacy Levy、George G. Wu
DOI:10.1021/jo034380t
日期:2003.6.1
A novel enantioselective alkylation of double benzylic substrates with secondary electrophiles is reported. A simple norephedrine-based chiral ligand was synthesized that gives alkylation product in 95% yield and 95% ee. A unique water effect on the enantioselectivity was unveiled. Good to excellent ee values were obtained with a number of double benzylic substrates and secondary electrophiles. This
报道了具有仲亲电试剂的双苄基底物的新型对映选择性烷基化。合成了一种简单的基于去氧麻黄碱的手性配体,该烷基化产物的收率为95%,ee为95%。揭示了对对映选择性的独特水效应。使用许多双苄基底物和第二亲电试剂可获得良好至优异的ee值。该新反应已被应用于有希望的抗癌剂的合成。