6-chloro-9-[2-(2,2-dimethyl-1,3-dioxan-5-yl)ethyl]purin-2-amine

9-(4-乙酰氧基-3-乙酰氧甲基丁基)-2-氨基-6-氯嘌呤

dimethyl 2-[2-(guanin-9-yl)ethyl]malonate

N2-acetyl-7-benzylguanine