[(2S,3S,4S,5R)-2-(4-acetamido-5H-pyrrolo[3,2-d]pyrimidin-7-yl)-4-bromo-5-[(2,4,4-trimethyl-5-oxo-1,3-dioxolan-2-yl)oxymethyl]tetrahydrofuran-3-yl] acetate 、 [(2R,3R,4S,5S)-5-(4-acetamido-5H-pyrrolo[3,2-d]pyrimidin-7-yl)-4-bromo-2-[(2,4,4-trimethyl-5-oxo-1,3-dioxolan-2-yl)oxymethyl]oxolan-3-yl] acetate 生成
N-[7-[(2R,5S)-5-[(2,4,4-trimethyl-5-oxo-1,3-dioxolan-2-yl)oxymethyl]-2,5-dihydrofuran-2-yl]-5H-pyrrolo[3,2-d]pyrimidin-4-yl]acetamide