甲基alpha-D-呋喃核糖苷

2',3',5'.-tri-O-acetyl-8-bromoguanosine

tri-O-acetyl-1-purin-7-yl-β-D-1-deoxy-ribofuranose

6-氯鸟嘌呤核苷

1,2,3-tri-O-acetyl-α-D-ribofuranoside