Asymmetric Synthesis of (−)-Anatoxin-a via an Asymmetric Cyclization Using a New Ligand for Pd-Catalyzed Alkylations
作者:Barry M. Trost、Johan D. Oslob
DOI:10.1021/ja983617d
日期:1999.4.1
trans-1,2-diaminocyclohexane and 2-diphenylphosphinobenzoic acid effect asymmetric alkylations with an allyl substrate bearing an electron-withdrawing group. On the other hand, a new type of ligand wherein the diamine is derivatized with both 2-diphenylphosphinobenzoic acid and 2-picolinic acid was required to effect asymmetriccyclization to form the 9-azabicyclo[4.2.1]non-2-ene system. A total synthesis