Design, synthesis and biological evaluation of sulfamethazine derivatives as potent neuraminidase inhibitors.

The purpose of this study is to design and synthesize a new series of sulfamethazine derivatives as potent neuraminidase inhibitors. A sulfamethazine lead compound, , was first identified by structure-based virtual screening technique, then some novel inhibitors based on were designed and synthesized. Compound exerts the most good potency in inhibiting the wild-type H5N1 NA (IC = 6.74 μM) and the H274Y mutant NA (IC = 21.09 μM). 150-cavity occupation is very important in determining activities of these inhibitors. The sulfamethazine moiety also plays an important role. Compound maybe regard as a good anti-influenza candidate to preform further study.