“…Thanh and co-workers synthesized a series of 36 derivatives of 4H-pyrano[2,3-d]pyrimidine 515a-zj by click cycloaddition reaction of polysubstituted 4H-pyrano[2,3-d]pyrimidines 514azj 167 containing propargyl group on nitrogen atom with peracetylated D-glucopyaranosyl azide 7 by using ultrasound, CuNPs@Montmorillonite as a catalyst and DIPEA in the presence of t BuOH/H2O at 25°C (Scheme 51). 168 Scheme 51 Synthesis of compounds 515a-zj All the synthesized compounds 515a-zj were tested against five typical human cancer cell lines, including breast adenocarcinoma cells MCF-7, hepatocellular carcinoma cells HepG2 and cervical cancer cells HeLa by using three reference drugs-Doxorubicin (DOX), Lapatinib, and Erlotinib then it was found that Some compounds, such as 515v, 515x, 515z, 515zc, 515zf, and 515zg against MCF-7, 515s, 515t, 515w, 515zh and 515zi against HepG2, and 515h, 515j, 515zf, and 515zh against HeLa cancer cell lines, demonstrated excellent activity against tested cancer cell lines with IC50 < 4 μM. In comparison to lapatinib, compounds 8v, 8z, 8zc, and 8zf significantly inhibited the activity of EGFR and HER2 tyrosine kinases.…”