This is a summary of a lecture presented at the 100th Anniversary, Moissan Symposium in Paris on Friday 10th November 2006. In HF/SbF5, Vinca alkaloids react selectively at the D'ring of the molecule. In the presence of CHCl3 (or CCl4), vinorelbine yields 20 ',20 '-difluoro-3 ',4 '-dihydrovinorelbine (vinflunine), presently in phase III experimentation for treatment of bladder cancer and non small cell lung cancer. (c) 2006 Elsevier B.V. All rights reserved.
Direct Coupling of Catharanthine and Vindoline to Provide Vinblastine: Total Synthesis of (+)- and <i>ent</i>-(−)-Vinblastine
作者:Hayato Ishikawa、David A. Colby、Dale L. Boger
DOI:10.1021/ja078192m
日期:2008.1.1
a presumed cantharanthine amine radical cation that undergoes a subsequent oxidative fragmentation and diastereoselective coupling with vindoline, addition of the resulting reaction mixture to an Fe(III)-NaBH4/air solution leads to oxidation of the C15'-C21' double bond and reduction of the intermediate iminium ion directly providing vinblastine (43%) and leurosidine (23%), its naturally occurring C21'