A Modular Synthesis of the Lamellarins: Total Synthesis of Lamellarin G Trimethyl Ether
作者:Scott T. Handy、Yanan Zhang、Howard Bregman
DOI:10.1021/jo0352833
日期:2004.4.1
A modular synthesis of the lamellarin family of natural products has been developed that is based on the application of three iterative halogenation/cross-coupling reaction sequences. The ability to halogenate the pyrrole core in a regioselective fashion, even in the presence of highly electron-rich aryl substituents, has been established. The compatibility of Suzuki coupling conditions with free alcohols
基于三种迭代卤化/交叉偶联反应序列的应用,已经开发了天然产物层层蛋白家族的模块合成方法。已经确立了即使在存在高度富电子的芳基取代基的情况下也能够以区域选择性方式卤化吡咯核心的能力。Suzuki偶联条件与硼酸中的游离醇和酚的相容性已用于减少保护/脱保护步骤的数量。实际上,已经确定在硼酸3上游离酚的存在对于成功地与lamellarin G三甲基醚的最终偶联是至关重要的,因为受保护的形式不能进行偶联。