Total Synthesis of the Proposed Structure of Ardimerin, and Proposal for its Structural Revision
作者:Ryota Nakayama、Eva-Maria Tanzer、Takenori Kusumi、Ken Ohmori、Keisuke Suzuki
DOI:10.1002/hlca.201600244
日期:2016.12
We report the first total synthesis of the proposed structure of ardimerin, which was achieved in 14 steps starting from 2,3,4‐trimethoxybenzoic acid. The key steps include the β‐selective formation of the crucial C‐glycoside linkage and stepwise construction of the strained eight‐membered salicylide core. The synthesis revealed that the proposed structure 1 does not match the natural product. A proposal
我们报告了第一个全合成的拟除菌素结构,从2,3,4-三甲氧基苯甲酸开始,共分14个步骤完成。关键步骤包括关键的C-糖苷键的β选择形成和应变八元水杨酸内酯逐步构建。综合表明,提出的结构1与天然产物不匹配。提出了将分离的天然产物重新分配至已经已知的Bergenin结构的提议。记录了合成的八元水杨酸酯的有趣特性,包括它们对亲核开环的敏感性和碗的手性。