Biomimetic studies towards the cardinalins: synthesis of (+)-ventiloquinone L and an unusual dimerisation
作者:Jonathan Sperry、Jimmy J. P. Sejberg、Frank M. Stiemke、Margaret A. Brimble
DOI:10.1039/b905077a
日期:——
Studiestowards the biomimetic synthesis of cardinalin 3 are described. Despite the successful enantioselective synthesis of the monomeric pyranonaphthoquinone ventiloquinone L, it subsequently failed to undergo a proposed biomimetic homodimerisation to cardinalin 3 using a range of oxidants. However, treatment of a related naphthopyran with cerium ammonium nitrate (CAN) facilitated a tandem biaryl