Research Progress of the Antiviral Bioactivities of Natural Flavonoids

摘要

The basic scaffolds of flavonoids. a The scaffold of flavanones and catechins; b the scaffold of the flavones and flavonols; c the scaffold of isoflavone; d the scaffold of anthocyanins. The structures of aurones and biflavones were not involved in this figure since their structures containing some special elements which were described in the article