Structural and synthetic studies on maleic anhydride and related diacid natural products
作者:David M. Heard、Emyr R. Tayler、Russell J. Cox、Thomas J. Simpson、Christine L. Willis
DOI:10.1016/j.tet.2019.130717
日期:2020.1
coupling of the appropriate nitronate with an unsaturated bromo-diester which was prepared in 2 steps from citraconic anhydride. The reported structures of the anhydride waquafranone B and the parent diacid were synthesised leading to revision of the originally proposed structure of the natural product and, in accord with Sutherland, confirming that anhydrides with exo-dienes are unstable. Biomimetic