title: Eco-friendly Synthesis of Pyrido[2,3-d]pyrimidine Analogs and Their Anticancer and Tyrosine Kinase Inhibition Activities.
abstract: One of the promising scaffolds in drug discovery is the fused pyrimidine derivatives.
  
  
  
  Efficient synthesis of a novel series of 18 new 1,8-naphthyridine-3-carbonitrile, 2-amino pyrido[2,3-d]pyrimidine derivatives via multi-component reactions of aromatic aldehydes, active methylene, and an aromatic amine under microwave irradiation and evaluation of their anticancer activity and possible mechanisms.
  
  
  
  Only compounds 5 (a-c) had a significant antiproliferative activity in hepatic HepG2 cells at submicromolar concentration (7.5-10 µM). Similarly, only compound 11 (a-c) had a significant activity in breast MCF7 cells at (4-7 µM). Derivatives with one methoxyphenyl substitution (5a and 11a) were not different from derivatives having dimethoxyphenyl substitution (5b and 11b). However, thiophene substitution (5c and 11c) enhanced the anticancer activity in both cells lines examined by 25% in HepG2 and by ~45% in MCF7 cells compared to a and b derivatives. All compounds were safe to both normal human lung cells (WI-38) and RBCs at concentrations up to 40 mM. The antiproliferative activity of compounds 5 (a-c) in HepG2 could be attributed to an induction of intrinsic apoptotic pathway as evidenced from the induction of initiator caspase 9 by ~ 4 folds. While, the activity of compounds 11 (a-c) could be attributed to their potential to inhibit tyrosine kinases (TK) by up to 85%. The IC50 of derivative 11c against TK was at 173 nM.
  
  
  
  The present study reported that derivatives 5 and 11 have merit for further investigation as anticancer and TK inhibitors.
authors.affiliation: University of Ain Shams, Faculty of Science, Department of Chemistry, Abbassia, Cairo, 11566. Egypt.
authors.forename: Abeer M
authors.initials: AM
authors.lastname: El-Naggar
authors.affiliation: University of Ain Shams, Faculty of Science, Department of Chemistry, Abbassia, Cairo, 11566. Egypt.
authors.forename: Ali K
authors.initials: AK
authors.lastname: Khalil
authors.affiliation: Department of Research on Children with Special Needs, National Research Centre, 12622, Cairo. Egypt.
authors.forename: Hala M
authors.initials: HM
authors.lastname: Zeidan
authors.affiliation: University of Ain Shams, Faculty of Science, Department of Zoology, Abbassia 11566, Cairo. Egypt.
authors.forename: Wael M
authors.initials: WM
authors.lastname: El-Sayed
mesh_terms: D000970:Antineoplastic Agents / Q000737:chemistry / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects; D002460:Cell Line; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D004912:Erythrocytes / Q000187:drug effects; D006461:Hemolysis / Q000187:drug effects; D006801:Humans; D020128:Inhibitory Concentration 50; D047428:Protein Kinase Inhibitors / Q000737:chemistry / Q000494:pharmacology*; D011505:Protein-Tyrosine Kinases / Q000037:antagonists & inhibitors*; D011725:Pyridines / Q000737:chemistry* / Q000494:pharmacology*; D011743:Pyrimidines / Q000737:chemistry* / Q000494:pharmacology*; D013057:Spectrum Analysis / Q000379:methods; D013329:Structure-Activity Relationship
chemical_list: D000970:Antineoplastic Agents; D047428:Protein Kinase Inhibitors; D011725:Pyridines; D011743:Pyrimidines; C000629091:pyrido(2,3-d)pyrimidine; D011505:Protein-Tyrosine Kinases
keywords: Pyrimidine derivatives; antiproliferative activity; caspase 9; hemolysis; one-pot synthesis; tyrosine kinase