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,