申请人:The Scripps Research Institute
公开号:US07250409B2
公开(公告)日:2007-07-31
Anlogs of ningalin B lacking inherent cytotoxic activity may be employed to reverse multi-drug resistant (MDR) phenotype and to resensitize transformed cells, including a human colon cancer cell line (HCT116/VM46), with respect to a variety of cytotoxic agents, e.g., vinblastine and doxorubicin. In many instances, resensitization is achieved at lower doses than the prototypical agent verapamil. Total synthesis of ningalin B and its analogs was achieved using a concise, efficient approach 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.
缺乏固有细胞毒性活性的宁加林B类似物可用于逆转多药耐药(MDR)表型并使转化细胞重新敏感,包括人类结肠癌细胞系(HCT116 / VM46),对多种细胞毒性药物如长春新碱和多柔比星等。在许多情况下,重新敏感化在比原型药物维拉帕米低的剂量下实现。使用基于杂环氮烯Diels-Alder策略(1,2,4,5-四唑→1,2-二嗪→吡咯)的简洁高效方法详细介绍了宁加林B及其类似物的全合成,该方法非常适合构建天然产物中发现的密集功能化吡咯核心。