Antiviral compounds quinone

In summary, the studies reviewed here use diverse strategies to take advantage of the redox properties of two classes of catechol-quinone compounds present in nature to design new compounds of pharmaceutical interest. In a third class of naturally occurring compounds of complex structure, simplification and removal of the redox-sensitive elements may be key to providing target structures with a novel antiviral character. 

The photophysics of the polycyclic quinone hypericin and its analogs has been studied quite exhaustively by Petrich and co-workers [57]. The interest in this compound stems from its proven antiviral activity, induced by light. Ultrafast time-resolved transient absorption studies indicate that ESIPT is the primary non-radiative process in hypericin. 

The development of new antiviral drugs, specially herbal preparations, remains desirable. Several studies screened natural quinones and plant extracts containing these compounds for inhibitory activity against several... 

In addition to antitumor activity, diospyrin exhibits antileishmanial properties , perhaps by ET . Based on common functionalities (quinone and phenol), diospyrin is structurally related to several other compounds that are physiologically active. The antiviral agent, sakyomicin A, which contains a hexose residue and the juglone skeleton, generates H2O2 after... 

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