Construction of the 3-prenyl-4-oxa-tricyclo[4.3.1.03,7]dec-8-en-2-one core of caged xanthonoid natural products via tandem Wessely oxidation-intramolecular [4+2] cycloaddition

Article abstract of DOI:10.1016/j.tetlet.2007.11.050

A two-step protocol based on tandem Wessely oxidation/intramolecular Diels-Alder reaction to provide general access to the 3-prenyl-4-oxa-tricyclo[4.3.1.0^3,7]dec-8-en-2-one core present in the caged Garcinia xanthonoids is demonstrated. These r