Formation of Benzo[<i>b</i>]fluorenes and the Benzo[<i>a</i>]fluorene Core of the Fluostatins by Cyclization of Diaryldiynones
作者:Carmen Atienza、Cristina Mateo、Óscar de Frutos、Antonio M. Echavarren
DOI:10.1021/ol0067336
日期:2001.1.1
[GRAPHICS]Thermal cyclization of 1-[2-(trimethylsiiylethynyl)phenyl]-3-arylpropinones was expected to give benzo[b]fluorenones. However, benzo[a] fluorenones were also formed as a result of a new rearrangement. These tetracycles possess the core structure of the fluostatins and isoprekinamycin.