De Novo Synthesis of Tamiflu via a Catalytic Asymmetric Ring-Opening of <i>meso</i>-Aziridines with TMSN<sub>3</sub>
作者:Yuhei Fukuta、Tsuyoshi Mita、Nobuhisa Fukuda、Motomu Kanai、Masakatsu Shibasaki
DOI:10.1021/ja061696k
日期:2006.5.1
An asymmetric ring-opening reaction of meso-aziridines with TMSN3 was developed using a catalyst prepared from Y(OiPr)3 and chiral ligand 2 in a 1:2 ratio. Excellent enantioselectivity was realized from a wide range of substrates with a practical catalyst loading. The products were efficiently converted to enantiomerically enriched 1,2-diamines, which are versatile chiral building blocks for pharmaceuticals and chiral ligands. This reaction was applied to a catalytic asymmetric synthesis of Tamiflu, a very important anti-influenza drug containing a chiral 1,2-diamino functionality.