Phthalide annulation of 2-alkylpyridin-3-ones results in the formation of the unexpected 2-aza-1-cyano-4-hydroxy-anthraquinones, the cyano moiety originating from the 3-cyanophthalide. These compounds hold great potential against Epstein-Barr Virus Early Antigen (EBV-EA) activation and as antimicrobial compounds
quinones - annulations - antiviral - phthalide - aza-anthraquinones