Amino-5-thio-l,3,4-thiadiazoline and 1-O-acety1-2,3,5-triO-benzoylribofuranose were allowed to react by fusion or by the Vorbruggen procedure. Two products were isolated and characterized to be positional isomers 4-(...Amino-5-thio-l,3,4-thiadiazoline and 1-O-acety1-2,3,5-triO-benzoylribofuranose were allowed to react by fusion or by the Vorbruggen procedure. Two products were isolated and characterized to be positional isomers 4-(β-D-ribofuranosyl)-2-amino-5-thio-1,3,4-thiadiazoline and 3-(β-D-ribofuranosyl)-2-imino-5-thio-1,2,4-thiadiazoline by 1H,(13)C NMR, mass spectra as well as crystallographic analysis.展开更多
文摘Amino-5-thio-l,3,4-thiadiazoline and 1-O-acety1-2,3,5-triO-benzoylribofuranose were allowed to react by fusion or by the Vorbruggen procedure. Two products were isolated and characterized to be positional isomers 4-(β-D-ribofuranosyl)-2-amino-5-thio-1,3,4-thiadiazoline and 3-(β-D-ribofuranosyl)-2-imino-5-thio-1,2,4-thiadiazoline by 1H,(13)C NMR, mass spectra as well as crystallographic analysis.
