1-(6-amino-purin-9-yl)-O2,O3-isopropylidene-β-D-1-deoxy-allofuranuronic acid amide 、
丁酰氯 在
吡啶 作用下,
生成 Butyric acid (S)-[(3aR,4S,6R,6aR)-6-(6-butyrylamino-purin-9-yl)-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-yl]-carbamoyl-methyl ester 、 Butyric acid (R)-[(3aR,4S,6R,6aR)-6-(6-butyrylamino-purin-9-yl)-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-yl]-carbamoyl-methyl ester