title: Synthesis of 5-substituted 2'-deoxyuridines.
abstract: A series of thymidylate synthetase inhibitors was synthesized, some of which were potential irreversible inhibitors. 5-Formyl-2'-deoxyuridine (9) and its dithiolane derivative 11 were prepared by condensation of the bis(trimethylsilyl) derivative of 5-formyluracil dimethyl acetal and the protected chloro sugar followed by saponification of the protective groups. 5-Acetyl-2'-deoxyuridine (15) was prepared in the same way from 5-acetyluracil. Treatment of the diester of 5-allyl-2'-deoxyuridine (17 or 22) with m-chloroperbenzoic acid gave the corresponding epoxide. Dimethylamine removed the ester groups and opened the epoxide to give the amino alcohol 24. The diester of 5-chloromethyl-2'-deoxyuridine (27) treated with methanol or sodium azide gave 5-methoxymethyl- (29) and 5-azidomethyl- (31) 2'-deoxyuridines. Compound 27 also was converted to 5-iodoacetamidomethyl-2'-deoxyuridine by treatment with ammonia, chloroacetyl chloride, base saponification, and finally sodium iodide.
mesh_terms: D001665:Binding Sites; D001667:Binding, Competitive; D003857:Deoxyuridine / Q000031:analogs & derivatives* / Q000138:chemical synthesis; D011485:Protein Binding; D013056:Spectrophotometry, Ultraviolet; D013940:Thymidylate Synthase / Q000037:antagonists & inhibitors
chemical_list: D013940:Thymidylate Synthase; D003857:Deoxyuridine