Total synthesis of balanol, part 2. Completion of the synthesis and investigation of the structure and reactivity of two key heterocyclic intermediates
作者:David Tanner、Lars Tedenborg、Antonio Almario、Ingrid Pettersson、Ingeborg Csöregh、Nicholas M. Kelly、Pher G. Andersson、Thomas Högberg
DOI:10.1016/s0040-4020(97)00167-1
日期:1997.3
enantioselective totalsynthesis of the natural product (-)-balanol (1) is described. In addition to benzophenone fragment 8, key intermediates are chiral bicyclic aziridine 3 and the corresponding epoxide 4, both of which undergo highly regio- and stereoselective nucleophilic ring-opening reactions, allowing control of the two stereogenic centres of the target molecule. The structure and reactivity