Synthesis of 2-Hydroxy-7-methylcarbazole, Glycozolicine, Mukoline, Mukolidine, Sansoakamine, Clausine-H, and Clausine-K and Structural Revision of Clausine-TY
作者:Christian Schuster、Carsten Börger、Konstanze K. Julich-Gruner、Ronny Hesse、Anne Jäger、Györley Kaufmann、Arndt W. Schmidt、Hans-Joachim Knölker
DOI:10.1002/ejoc.201402495
日期:2014.8
Buchwald–Hartwig amination and palladium(II)-catalyzed oxidative cyclization reaction sequence provided efficient access to a series of oxygenated tricyclic carbazoles. In the present work, this approach was applied to the total syntheses of the naturally occurring carbazole alkaloids 2-hydroxy-7-methylcarbazole, glycozolicine, mukoline, mukolidine, sansoakamine, glycozolidine, clausine-H (clauszoline-C)
Buchwald-Hartwig 胺化和钯 (II) 催化的氧化环化反应序列提供了获得一系列含氧三环咔唑的有效途径。在目前的工作中,这种方法被应用于天然存在的咔唑生物碱 2-羟基-7-甲基咔唑、甘唑啉、mukoline、mukolidine、sansoakamine、糖唑烷、clausine-H (clauszoline-C)、clausine-K ( clauszoline-J) 和 2-羟基-7-甲氧基咔唑-3-羧酸甲酯,最初提出作为 clausine-TY 的结构。后者的合成导致 clausine-TY 的结构重新分配。