Condensation of 1-Fluorofuranoses and Silylated Nucleobases Catalyzed by Tetrafluorosilane
作者:Ryoji Noyori、Masahiko Hayashi
DOI:10.1246/cl.1987.57
日期:1987.1.5
The title reaction provides a generally useful tool for nucleosidesynthesis. The stereoselectivities are highly influenced by the fluoride substrates, and steric course of the reaction of O-benzylated ribofuranosyl fluoride is solvent dependent.
The stereocontrolled synthesis of 1,2-cis furanosyl nucleosides via a novel anomeric activation
作者:S Hanessian
DOI:10.1016/00404-0399(50)1179l-
日期:1995.8.14
The coupling of 2-(2',3',5'-tri-O-benzyl-D-ribofuranosyloxy)-3-methoxypyridine as well as 2-(2',3',5'-tri-O-benzyl-D-ribofuranosyl with silylated pyrimidine bases by activation with trimethylsilyl trifluoromethanesulfonate and silver triflate respectively affords the corresponding 1,2-cis nucleosides with high selectivity.
Stereoselective synthesis of nucleosides by metallocene-promoted activation of glycosyl fluorides
作者:Ma Isabel Matheu、Raouf Echarri、Sergio Catillón
DOI:10.1016/s0040-4039(00)91869-0
日期:1992.2
The Cp2MCl2-AgX (M = Hf, Zr; X = ClO4, OTf) mixture is very effective for the promotion of the coupling of glycosyl fluorides and bis(trimethylsilyl)uracil. The stereoselectivity of the reaction depends on the solvent employed. Application to the synthesis of 1-(3,4 -isopropylidene-2-fluoro-2-O-methyl-alpha-D-ribopentopyranosyl)uracil is described.