Oxidative aryl coupling reactions: a biomimetic approach to configurationally unstable or axially chiral biaryl natural products and related bioactive compounds
作者:Gerhard Bringmann、Stefan Tasler
DOI:10.1016/s0040-4020(00)00940-6
日期:2001.1
products and related compounds in the fields of biphenyls, biscarbazoles and bisnaphthylisoquinolines. For sterically more hindered biaryls, which consequently show the phenomenon of axialchirality, the products were prepared in an atropisomerically pure form. Their absoluteaxialconfigurations were assigned mainly by experimental and computational CD investigations.
A first approach to the atroposelective total synthesis of mastigophorenes is described, the directed preparation of a structurally slightly modified analog of mastigophorenes A and B, with a tert-butyl instead of a substituted, chiral cyclopentyl residue. Its (partially protected) monomeric half is dimerized by oxidative (phenolic) coupling to give the corresponding biphenyl in a racemic form, or