The application of vinylogous iminium salt derivatives to an efficient relay synthesis of the pyrrole containing alkaloids polycitone A and B
作者:John T. Gupton、Robert B. Miller、Keith E. Krumpe、Stuart C. Clough、Edith J. Banner、Rene P.F. Kanters、Karen X. Du、Kartik M. Keertikar、Nicholas E. Lauerman、John M. Solano、Bret R. Adams、Daniel W. Callahan、Barrett A. Little、Austin B. Scharf、James A. Sikorski
DOI:10.1016/j.tet.2004.12.015
日期:2005.2
A new and efficient relay synthesis of the marine natural products polycitone A and B is described. The new strategy relies on the formation of 2,4-disubstituted pyrroles from a vinamidinium salt followed by electrophilic substitution at the 5-position of the pyrrole and Suzuki coupling at the 4-position to produce the tetrasubstituted heterocycle efficiently and with complete control of regiochemistry
描述了一种海洋天然产物聚citone A和B的新型高效中继合成方法。新的策略依赖于由vinamidinium盐形成2,4-二取代的吡咯,然后在吡咯的5位进行亲电取代,并在4位进行Suzuki偶联,从而有效地产生四取代的杂环并完全控制区域化学。