Abstract
Abstract A series of novel quinazoline derivatives bearing sulfonamide moiety was designed and synthesized, and their structure were characterized by 1H NMR, 13C NMR, and HRMS techniques. Among them, the structure of compound E1 was further confirmed through X-ray single-crystal diffraction analyses. Their anti-Tobacco mosaic virus (TMV) activities were evaluated through half-leaf method. The bioassay results showed that E8 and E19 possess excellent inhibitory activity towards TMV. The EC50 of curative activities, protective activities, and inactivating activities of E8 and E19 are 132.1, 152.8, 57.4 mg/L and 278.0, 165.3, 94.5 mg/L, respectively, which are far superior than Ribavirin (318.2, 201.5, 128.6 mg/L, respectively).
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