Total Synthesis and Structural Refinement of the Cyclic Tripyrrole Pigment Nonylprodigiosin
作者:Alois Fürstner、Jaroslaw Grabowski、Christian W. Lehmann
DOI:10.1021/jo991021i
日期:1999.10.1
total synthesis of the cyclic prodigiosin derivative 4 is described, which constitutes a potential lead compound for the development of immunosuppressive agents. The key steps of this approach comprise a palladium-catalyzed Suzuki cross coupling reaction of the rather unstable pyrrole boronic acid derivative 17 with the electron rich pyrrolyl triflate 15 followed by a ring-closingmetathesis reaction