Eight-Step Total Synthesis of the Cyclopeptide Alkaloid Mucronine E
作者:Gwilherm Evano、Mathieu Toumi、François Couty
DOI:10.1055/s-2007-1000833
日期:2008.1
An eight-step total synthesis of the 15-membered ring cyclopeptidealkaloid mucronine E is reported. Key steps include the formation of the highly substituted aromatic core using an asymmetric hydrogenation-Vilsmeier formylation sequence. Central to our approach was a macroamidation protocol using a copper-catalyzed coupling reaction to install the enamide with a concomitant straightforward macrocyclization
报道了 15 元环环肽生物碱 mucronine E 的八步全合成。关键步骤包括使用不对称氢化-Vilsmeier 甲酰化序列形成高度取代的芳香核。我们方法的核心是大酰胺化协议,使用铜催化偶联反应来安装烯酰胺,并伴随直接大环化。这种合成还允许分配 mucronine E 的相对和绝对构型。