6-氯-9-(2,3,5-三-O-乙酰基呋喃戊糖基)-1,9-二氢-2H-嘌呤-2-酮

9-((2R,3R,4S,5R)-3,4-Dihydroxy-5-hydroxymethyl-tetrahydro-furan-2-yl)-6-p-tolylsulfanyl-3,9-dihydro-purin-2-one

2',3'-O-Isopropylidene-6-[(4-methylphenyl)thio]-2-oxo-9-(β-D-ribofuranosyl)-2,3-dihydropurine

2-hydroxy-6-O-trimethylsilyl-9-(2,3,5-tri-O-trimethylsilyl-β-D-ribofuranosyl)-purine