The application of vinylogous iminium salt derivatives to efficient formal syntheses of the marine alkaloids lamellarin G trimethyl ether and ningalin B
作者:John T. Gupton、Benjamin C. Giglio、James E. Eaton、Elizabeth A. Rieck、Kristin L. Smith、Matthew J. Keough、Peter J. Barelli、Lauren T. Firich、Jonathan E. Hempel、Timothy M. Smith、Rene P.F. Kanters
DOI:10.1016/j.tet.2009.03.085
日期:2009.5
Studies directed at the synthesis of lamellarin G trimethyl ether and ningalin B via vinylogous iminium salt derivatives are described. The successful strategy relies on the formation of a 2,4-disubstituted pyrrole or a 1,2,3,4-tetrasubstituted pyrrole from a vinylogous iminium salt or vinylogous iminium salt derivative. Subsequent transformations of these highly substituted pyrroles lead to efficient
描述了通过乙烯基亚胺盐衍生物合成层状菌素 G 三甲醚和宁甘素 B 的研究。成功的策略依赖于由乙烯基亚胺盐或乙烯基亚胺盐衍生物形成 2,4-二取代吡咯或 1,2,3,4-四取代吡咯。这些高度取代的吡咯的后续转化导致含有天然产物的相应吡咯的有效和区域受控的形式合成。