Total Synthesis of Aaptamine, Demethyloxyaaptamine, and Their 3-Alkylamino Derivatives
作者:Yuan Gao、Fan Yang、Fan Sun、Lei Liu、Bo Liu、Shu-Ping Wang、Chun-Wei Cheng、Hongze Liao、Hou-Wen Lin
DOI:10.1021/acs.orglett.9b00183
日期:2019.3.1
A simple and efficient synthetic route for preparing the benzonaphthyridine framework is reported. Only seven steps are needed for the assembly of 3-alkylamino aaptamine from inexpensive isoquinoline 6 by this route with about 20% overall yield. The two key steps are a novel palladium-catalyzed reductive cyclization with Mo(CO)6 as reductant to form aaptamine and demethyloxyaaptamine and a hydrogen-bond-mediated
报道了制备苯并萘啶骨架的简单有效的合成途径。通过该途径由廉价的异喹啉6组装3-烷基氨基Aaptamine仅需要七个步骤,总产率为约20%。这两个关键步骤是用Mo(CO)6作为还原剂形成Aaptamine和Demethyloxyaaptamine的新型钯催化还原环化反应,以及氢键介导的氧化烷基胺化反应,以实现完全的区域选择性。