title: Synthesis and in vitro antitumor activity of new substituted thiopyrimidine acyclic nucleosides and their thioglycoside analogs.
abstract: Some new thiopyrimidine acyclic nucleosides and thioglycoside derivatives 3a-c, 4a-c, 6a,b, and 7a,b were synthesized. The cytotoxicity and antitumor evaluation of all prepared compounds have been tested in vitro against Ehrlich's ascites carcinoma cell line and their activity against glutathione peroxidase and catalase were reported. The role of the prepared compounds as free radical regulators and the therapeutic antitumor effect of a balanced generation of free radicals are discussed. Compounds 2, 3b, 3c, 4a, and 4c inhibited significantly in a dose dependent manner the growth of Ehrlich ascites carcinoma cells while the other compounds did not show any antitumor activity even at higher concentrations.
authors.affiliation: Photochemistry Department, National Research Center, El Dokki, Cairo, Egypt. waelshendy@gmail.com
authors.forename: Wael A
authors.initials: WA
authors.lastname: El-Sayed
authors.forename: Aymn E
authors.initials: AE
authors.lastname: Rashad
authors.forename: Samir M
authors.initials: SM
authors.lastname: Awad
authors.forename: Mamdouh M
authors.initials: MM
authors.lastname: Ali
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D002286:Carcinoma, Ehrlich Tumor / Q000188:drug therapy* / Q000473:pathology; D002374:Catalase / Q000037:antagonists & inhibitors; D049109:Cell Proliferation / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D004354:Drug Screening Assays, Antitumor; D005979:Glutathione Peroxidase / Q000037:antagonists & inhibitors; D051379:Mice; D011741:Pyrimidine Nucleosides / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D013329:Structure-Activity Relationship; D013865:Thioglycosides / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D000970:Antineoplastic Agents; D011741:Pyrimidine Nucleosides; D013865:Thioglycosides; D002374:Catalase; D005979:Glutathione Peroxidase