e.g. Filippa Pettersson or Cancer Res. 75(6) , 1102-12, (2015) or 10.1002/anie.201600521
Synthesis
… Groups by Ceric (IV) Ammonium Nitrate-Mediated Oxidative Cycloaddition of 1, 3-Dicarbonyl Compounds to Vinyl Sulfides. Application to the Synthesis of Benzo [b] …
Abstract Ceric (IV) ammonium nitrate-mediated oxidative cycloaddition of 1, 3-dicarbonyls to vinyl sulfides afforded substituted dihydrofurans with sulfide groups in moderate yields. This new synthetic method has been applied to the synthesis of benzo [b] naphtho [2, 3-d] furan- 6, 11-dione and furanoflavone natural products such as millettocalyxins C and pongol methyl ether.