Synthesis and Characterization of New 3<sup>″</sup>,5<sup>″</sup>-DIARYL-3<sup>″</sup><i>H</i>-Dispiropyran/Thiopyran[4,2′-Chroman-3′,2<sup>″</sup>-[1,3,4-Thiadiazol]-4′-One Derivatives and Related Compounds as Anticancer and Antiviral Agents

<div><p>GRAPHICAL ABSTRACT</p><p></p></div>