Regioselective Preparation of 2-Substituted 3,4-Diaryl Pyrroles: A Concise Total Synthesis of Ningalin B
作者:James L. Bullington、Russell R. Wolff、Paul F. Jackson
DOI:10.1021/jo026445i
日期:2002.12.1
nitriles to provide a regioselectivesynthesis of 2-substituted 3,4-diaryl pyrroles. The ease of preparation of alpha,beta-unsaturated nitriles allows the rapid synthesis of pyrroles with varied substituents. Using this method, a key intermediate (1) for the synthesis of the marine natural products lukianol A, lamellarin O, and lamellarin Q was prepared in two steps. A total synthesis of ningalin B (11)