161. Experiments on the synthesis of purine nucleosides. Part VIII. The determination of the lactol ring structures of purine glycosides by periodate oxidation
作者:B. Lythgoe、A. R. Todd
DOI:10.1039/jr9440000592
日期:——
Synthesis of new mannosyl, galactosyl and glucosyl theophylline nucleosides with potential activity as antagonists of adenosine receptors. DEMA-induced cyclization of glycosylideneiminouracils
作者:Rodrigo Rico-Gómez、J. Manuel López-Romero、Jesús Hierrezuelo、José Brea、M. Isabel Loza、Maykel Pérez-González
DOI:10.1016/j.carres.2008.01.011
日期:2008.4
The synthesis of D-mannosyl, D-galactosyl and D-glucosyl theophyllinenucleosides by diethoxymethyl acetate (DEMA)-induced cyclization of 4-amino-5-glycosylideneimino-1,3-dimethyluracil is reported. 8-Methyltheophylline derivatives of the same sugars were also prepared by Ac(2)O/H(+)-induced cyclization of their imine precursors. This approach has allowed beta-D-mannopyranosyl-, alpha-D-galactofuranosyl-