General and Expedient Synthesis of 1,4-Dioxygenated Xanthones
作者:Alexander L. Nichols、Patricia Zhang、Stephen F. Martin
DOI:10.1021/ol201910v
日期:2011.9.2
A facile entry to 1,4-dioxygenated xanthones having a variety of substitution patterns and substituents was developed that features a novel application of the Moore cyclization using substrates that were readily assembled in a highly convergent fashion by an acetylide stitching process. The practical utility of the methodology was demonstrated by an efficient synthesis of a naturally occurring xanthone and correction of the structure of dulcisxanthone C.