(1R,2S,3R,5S)-3-[2-chloro-6-[(1S,2S)-2-methoxycyclopentylamino]-purin-9-yl]-5-(5-ethyl-tetrazol-2-yl)-cyclopentane-1,2-diol 、
5-甲基四氮唑 生成 (1R,2S,3R,5S)-3-(6-[(1S,2S)-2-methoxycyclopentylamino]-2-chloro-purin-9-yl)-5-(5-methyl-tetrazol-2-yl)-cyclopentane-1,2-diol