Hypervalent Iodine(III)-Promoted Intermolecular C–C Coupling of Vindoline with β-Ketoesters and Related Substrates
作者:Travis C. Turner、Kotaro Shibayama、Dale L. Boger
DOI:10.1021/ol400135n
日期:2013.3.1
regioselective intermolecular coupling reaction of vindoline with a wide range of substrates including β-ketoesters, β-diketones, β-ketoaldehydes, β-ketonitriles, malononitriles, and β-cyanoesters provides an opportunity for the synthesis of vinblastine analogues containing deep-seated changes in the upper velbanamine subunit. The transition-metal-free hypervalent iodine(III)-promotedintermolecular sp3/sp2
New Insights into the Mechanism and an Expanded Scope of the Fe(III)-Mediated Vinblastine Coupling Reaction
作者:Hiroaki Gotoh、Justin E. Sears、Albert Eschenmoser、Dale L. Boger
DOI:10.1021/ja306229x
日期:2012.8.15
catharanthine in an Fe(III)-mediated coupling reaction, an examination of the key structural features of catharanthine required for participation in the reaction, and the development of a generalized indole functionalization reaction that bears little structural relationship to catharanthine itself are detailed. In addition to providing insights into the mechanism of the Fe(III)-mediated coupling reaction