Decarboxylative Cross-Coupling of Azoyl Carboxylic Acids with Aryl Halides
作者:Fengzhi Zhang、Michael F. Greaney
DOI:10.1021/ol1019597
日期:2010.11.5
Decarboxylativecross-coupling of thiazole and oxazole-5-carboxylic acids with arylhalides is reported. Under a bimetallic system of catalytic palladium and a stoichiometric silver carbonate, a variety of (hetero)arylated azoles can be prepared in excellent yield.
foundation for simplifying the structure of these alkaloids. The ring-open products, acylhydrazones 9a–9u, were also found to possess good antiviral activities. Moreover, all the synthesized compounds displayed broad-spectrum fungicidal activities. This study provides important information for the research and development of pimprinine alkaloids as novel antiviral agents.
Synthesis of Oxazolylindolyl Alkaloids via Rhodium Carbenoids
作者:Kevin J. Doyle、Christopher J. Moody
DOI:10.1055/s-1994-25627
日期:——
The oxazolylindole alkaloids pimprinine (1a), pimprinethine (1b) and WS-30581 A (1c) are readily obtained in two steps by rhodium(II) catalysed reaction of N-Boc-3-diazoacetylindole with the appropriate nitrile followed by removal of the Boc-group.