p. 4372 - 4374,4372-4374
(1987)p. 3275 - 3278
(1987)3,4-Dihydro-4,6,7-trimethyl-3-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-9H-imidazo<1,2-a>purin-9-one
4,9-Dihydro-4,7-dimethyl-9-oxo-3-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-3H-imidazo<1,2-a>purine-6-carboxaldehyde
3,4-Dihydro-7-(hydroxymethyl)-4,6-dimethyl-3-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-9H-imidazo<1,2-a>purin-9-one
3,4-Dihydro-4,6-dimethyl-3-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-9H-imidazo<1,2-a>purin-9-one
guanosine