Acid catalyzed stereoselective rearrangement and dimerization of flavenes: synthesis of dependensin
作者:Mandar Deodhar、David StC Black、Naresh Kumar
DOI:10.1016/j.tet.2007.03.173
日期:2007.6
Appropriately substituted flavenes undergo stereoselective rearrangement and dimerization when treated with methanolic hydrochloric acid to give benzopyranobenzopyrans. A rationale for the rearrangement is proposed. This synthetic methodology has been used for a high yield synthesis of the natural product dependensin.