Total Synthesis of Ningalin B Utilizing a Heterocyclic Azadiene Diels−Alder Reaction and Discovery of a New Class of Potent Multidrug Resistant (MDR) Reversal Agents
作者:Dale L. Boger、Danielle R. Soenen、Christopher W. Boyce、Michael P. Hedrick、Qing Jin
DOI:10.1021/jo9916535
日期:2000.4.1
A concise, efficient approach to the total synthesis of ningalin B (1) based on a heterocyclic azadiene Diels-Alder strategy (1,2,4,5-tetrazine-->1,2,-diazine-->pyrrole) ideally suited for construction of the densely functionalized pyrrole core found in the natural product is detailed. Examination of the natural product and a number of synthetic intermediates revealed that while lacking inherent cytotoxic
一种基于杂环氮杂二烯Diels-Alder策略(1,2,4,5-四嗪-> 1,2,-二嗪->吡咯)的简洁高效的方法,合成宁纳林B(1)详细介绍了用于天然产物中稠密官能化吡咯核的构建的方法。对天然产物和许多合成中间体的检查表明,尽管缺乏固有的细胞毒性活性,但许多药物可以逆转耐多药(MDR)表型,使人结肠癌细胞系(HCT116 / VM46)对长春碱和阿霉素的敏感性降低,剂量低于原型制剂维拉帕米。