Rapid structural diversification of pseudopterosins: sulfuric acid promoted dehydro-aromatization yielding 14,15-dihydro-elisabatin B
作者:Malcolm W.B. McCulloch、Russell G. Kerr
DOI:10.1016/j.tetlet.2015.03.013
日期:2015.4
Herein, we report a one-pot, sulfuric acid promoted, dehydro-aromatization reaction to rapidly convert pseudopterosins into 14,15-dihydro-elisabatin B. We propose a mechanism invoking redox cycling between the substrate catechol and ortho-quinone moieties. We also provide full spectroscopic characterization of two novel 5,6-dihydro-1H-phenalen-2(4H)-one derivatives, which are minor products of the reaction. This work opens up a unique route to rapidly provide libraries of novel marine natural product derivatives for drug discovery. (C) 2015 Elsevier Ltd. All rights reserved.