作者:Glenn A. Pullella、Duncan A. Wild、Gareth L. Nealon、Mikhail Elyashberg、Matthew J. Piggott
DOI:10.1021/acs.joc.7b00863
日期:2017.7.21
antitubercular natural product eucapsitrione, has been synthesized in 43% overall yield and six steps, including a key Suzuki–Miyaura biaryl coupling and a directed remote metalation (DReM)-initiated cyclization. The physical and spectroscopic properties of 1 do not match the data reported for the natural product. At this time there is insufficient information available to enable a structure reassignment
1,5,7-三羟基-6 H-茚并[1,2 - b ]蒽-6,11,13-三酮(1),被认为是抗结核天然产物桉树三酮,已以43%的总收率合成,六个步骤,包括一个关键的Suzuki-Miyaura联芳基偶联和一个定向的远程金属化(DReM)启动的环化反应。的物理和光谱性质1不匹配报道的天然产物中的数据。此时,没有足够的可用信息来进行结构重新分配。在优化Suzuki-Miyaura偶联过程中,观察到与硼酸酯基团邻位的空前联芳基偶联。已经研究了这种异常反应的范围。