title: Synthesis of 6-aminouracils and pyrrolo[2,3-d]pyrimidine-2,4-diones and their inhibitory effect on thymidine phosphorylase.
abstract: Inhibitors of thymidine phosphorylase (dThdPase) are expected to suppress the growth and metastasis of tumor cells by inhibition of angiogenesis and were designed by utilizing the three dimensional structure of the enzyme. 5-Substituted 6-aminouracils (5) and 7-substituted pyrrolo[2,3-d]pyrimidine-2,4-diones (6) were synthesized and tested for inhibition of human placenta thymidine phosphorylase. 5-Bromo-6-aminouracil (5d), 5-cyano-6-[3-(methylamino)propyl]-uracil (5e), and 7-(2-aminoethyl)-pyrrolo[2,3-d]pyrimidine-2,4-dione (6c) inhibited dThdPase with IC50s of 7.6, 3.8 and 44.0 microM, respectively.
authors.affiliation: Laboratory of Medicinal Chemistry, Gifu Pharmaceutical University, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Hirota
authors.forename: M
authors.initials: M
authors.lastname: Sawada
authors.forename: H
authors.initials: H
authors.lastname: Sajiki
authors.forename: M
authors.initials: M
authors.lastname: Sako
mesh_terms: D000964:Antimetabolites, Antineoplastic / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D002455:Cell Division / Q000187:drug effects; D015195:Drug Design; D004791:Enzyme Inhibitors / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D005260:Female; D006801:Humans; D009389:Neovascularization, Pathologic / Q000517:prevention & control; D011247:Pregnancy; D011744:Pyrimidinones / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D011758:Pyrroles / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D013939:Thymidine Phosphorylase / Q000037:antagonists & inhibitors*; D014407:Tumor Cells, Cultured; D014498:Uracil / Q000031:analogs & derivatives* / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology
chemical_list: D000964:Antimetabolites, Antineoplastic; D004791:Enzyme Inhibitors; D011744:Pyrimidinones; D011758:Pyrroles; D014498:Uracil; C013400:6-aminouracil; D013939:Thymidine Phosphorylase