“…In last decade, 4-anilinoquinazolines have emerged as a versatile template for inhibition of a diverse range of receptor tyrosine kinases (Szczepankiewicz et al, 2000;Tobe et al, 2003). The most widely studied of these are the inhibitors of the epidermal growth factor receptor (EGFR) tyrosine kinase and that have found wide clinical applications (Wakeling et al, 1996;Grünwald and Hidalgo, 2003;Wakeling, 2005;Wedge et al, 2005;Liu et al, 2007;Lüth and Löwe, 2008;Li et al, 2010). In a recent approach, the antitumor activity of quinazoline derivatives has shown to be enhanced by introducing sulfonamide-containing moieties substituted at position 4, as revealed in compounds III and IV which are potent inhibitors of EGFR PTK (Abouzid and Shouman, 2008) (Fig.…”