Cascade Reactions. A Simple One-pot Synthesis of the Mitomycin Skeleton
作者:Albert Defoin、Guillaume Geffroy、Didier Le Nouen、Didier Spileers、Jacques Streith
DOI:10.1002/hlca.19890720604
日期:1989.9.20
types of cascade reactions which give pyridinium betaines 6 and pyrrolo-indoles 8 as the major reaction products. The one-pot syntheses of pyrroloindoles 8 represent a new and easy access to the basic skeleton of mitomycins 10. The scope and limitations of the cascade reactions were investigated.
亚硝基芳烃二烯亲核体1与共轭二烯2和3a / 3b发生区域特异性反应,从而导致不稳定的Diels - Alder环加合物4和5。它们经历两种类型的级联反应,它们给出吡啶鎓甜菜碱6和吡咯并吲哚8作为主要反应产物。一锅合成吡咯并吲哚8代表了一种新的且容易获得的丝裂霉素10基本骨架。研究了级联反应的范围和局限性。