A Mixed‐Ligand Chiral Rhodium(II) Catalyst Enables the Enantioselective Total Synthesis of Piperarborenine B
作者:Robert A. Panish、Srinivasa R. Chintala、Joseph M. Fox
DOI:10.1002/anie.201600766
日期:2016.4.11
A novel, mixed‐ligand chiral rhodium(II) catalyst, Rh2(S‐NTTL)3(dCPA), has enabled the first enantioselective totalsynthesis of the natural product piperarborenine B. A crystal structure of Rh2(S‐NTTL)3(dCPA) reveals a “chiral crown” conformation with a bulky dicyclohexylphenyl acetate ligand and three N‐naphthalimido groups oriented on the same face of the catalyst. The natural product was prepared