First Total Synthesis of (±)-Strychnofoline via a Highly Selective Ring-Expansion Reaction
作者:Andreas Lerchner、Erick M. Carreira
DOI:10.1021/ja027906k
日期:2002.12.1
An efficient synthesis of the antitumor alkaloid (+/-)-strychnofoline is documented. Key to the development of the highly convergent strategy delineated is the coupling of a cyclic imine with spiro[cyclopropan-1,3'-oxindole], which takes place in a highly diastereoselective manner. The ability to conduct annulation reactions of spirocyclopropyloxindoles with functionalized cyclic imines provides new