Synthesis of 2′,3′-Dideoxy-3′-fluorouridines with Potential Anti-HIV Activity According to Neural Network Calculations
作者:Mamdouh A. Sofan、Ahmed E.-S. Abdel-Megied、Morten B. Pedersen、Erik B. Pedersen、Claus Nielsen
DOI:10.1055/s-1994-25515
日期:——
Methyl 2,3-dideoxy-3-fluoro-5-O-(4-phenylbenzoyl)-β-D-erythro-pentofuranoside was condensed with trimethylsilylated 5-substituted uracils to give nucleosides using trimethylsilyl trifluoromethanesulfonate as catalyst. In the case of 5-nitrouracil an acyclic nucleoside believed to be an intermediate for the corresponding nucleoside was isolated. The 5-substituents were selected from neural network calculations on compounds with potential activity against HIV-1. All compounds from the condensation reactions were deacylated by treatment with sodium methoxide in methanol.
Synthesis and evaluation of antiviral activity of 2?-deoxyuridines with 5-methylene-2-thiohydantoin substituents in the 5-position
作者:A. A. El-Barbary、A. I. Khodair、E. B. Pedersen、C. Nielsen
DOI:10.1007/bf00811853
日期:1994.5
1-(2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-D-erythro-pentofuranosyl)-5-formyluracil (4) was synthesized from 5-formyluracil and an appropriate methyl glycoside and condensed with 2-thiohydantoin (5a) and its corresponding 3-phenyl derivative 5b to give 5-[1-(2-deoxy-3,5-bis-O-(4-methylbenzoyl)-D-erythro-pentofuranosyl)uracil-5-ylmethylene]-2-thiohydantoins 7a and 7b, respectively, in 65-70% yield. They were deprotected with sodium methoxide in methanol to give both anomers of the free nucleosides. In a different route 5-formyluracil (1) was condensed with 5b and subsequently with an appropriate methyl glycoside to give 7b.
El-Barbary, Ahmed A.; Khodair, Ahmed I.; Pedersen, Erik B., Liebigs Annalen der Chemie, 1994, # 6, p. 619 - 622
作者:El-Barbary, Ahmed A.、Khodair, Ahmed I.、Pedersen, Erik B.、Nielsen, Claus