Synthetic Studies on Dragmacidin D: Synthesis and Assembly of Three Fragments Towards an Advanced Intermediate
作者:Masato Oikawa、Minoru Ikoma、Makoto Sasaki
DOI:10.1002/ejoc.201100242
日期:2011.8
We report herein the approach to the key advanced intermediate in the synthesis of the bioactive marine natural product dragmacidin D. By employing a modular synthesis strategy of three fragments (5, 7, and 8), the advanced intermediate 3 has been successfully synthesized in 2.5 % yield over 15 steps by starting from nitrotoluene 20. The synthesis also involves sequential cross-coupling reactions,
我们在此报告了合成具有生物活性的海洋天然产物 Dragmacidin D 的关键高级中间体的方法。通过采用三个片段(5、7 和 8)的模块化合成策略,高级中间体 3 已在 2.5 中成功合成从硝基甲苯 20 开始,经过 15 个步骤的 % 产率。该合成还涉及顺序交叉偶联反应,即 Sonogashira 和 Suzuki-Miyaura 反应,因此可以有效地合成各种类似物,这将允许研究药物的构效关系D.