Lewis Acid-Promoted Synthesis of Unsymmetrical and Highly Functionalized Carbazoles and Dibenzofurans from Biaryl Triazenes: Application for the Total Synthesis of Clausine C, Clausine R, and Clauraila A
作者:Weijun Yang、Jun Zhou、Binjie Wang、Hongjun Ren
DOI:10.1002/chem.201102802
日期:2011.12.2
A natural approach: A Lewis acid‐promoted nucleophilic aromatic substitution approach to the regioselective synthesis of highly substituted carbazoles and dibenzofurans has been developed. The annulation process is applied to the total synthesis of carbazole alkaloids clausine C, clausine R, and clauraila A (see scheme).
一种自然方法:已开发出一种路易斯酸促进的亲核芳族取代方法,用于高度取代的咔唑和二苯并呋喃的区域选择性合成。环化工艺应用于咔唑生物碱克劳斯汀C,克劳斯汀R和克劳拉艾拉A的全合成(请参阅方案)。