上游原料
2,4-bis[(trimethylsilyl)oxy]pyrimidine; trimethylsilyl 2-[(trimethylsilyl)oxy]-4-pyrimidinyl ether2,4(1H,3H)-pyrimidinedione; Uracil[(2S,3R,4S)-4,5-bis(acetoxy)-3-(benzoyloxy)tetrahydro-2-furanyl]methyl benzoate(2S,3R,4S,5S)-4-(acetoxy)-2-[(benzoyloxy)methyl]-5-[2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl]tetrahydro-3-furanyl benzoate[(2S,3S,4S,5S)-3-(benzoyloxy)-5-[2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl]-4-hydroxytetrahydro-2-furanyl]methyl benzoate[(2S,3R,4R,5S)-3-(benzoyloxy)-5-[2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl]-4-hydroxytetrahydro-2-furanyl]methyl benzoate[(2S,3S,4R,5S)-3-(benzoyloxy)-5-[2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl]-4-[(phenoxycarbothioyl)oxy]tetrahydro-2-furanyl]methyl benzoate[(2S,3R,5S)-3-(benzoyloxy)-5-[2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl]tetrahydro-2-furanyl]methyl benzoate[(2S,3R,5S)-3-(benzoyloxy)-5-[2-oxo-4-thioxo-3,4-dihydro-1(2H)-pyrimidinyl]tetrahydro-2-furanyl]methyl benzoatemethyl propiolate[(2S,3R,5S)-3-(benzoyloxy)-5-[2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl]tetrahydro-2-furanyl]methyl benzoate(3R,4R,5S)-5-(hydroxymethyl)tetrahydro-2,3,4-furantriol(3aS,5S,6S,6aR)-2-amino-5-(hydroxymethyl)-3a,5,6,6a-tetrahydrofuro[2,3-d][1,3]oxazol-6-ol(2S,3S,3aR,9aS)-3-hydroxy-2-(hydroxymethyl)-2,3,3a,9a-tetrahydro-6H-furo[2',3':4,5][1,3]oxazolo[3,2-a]pyrimidin-6-one[(2S,3S,3aR,9aS)-3-(benzoyloxy)-6-oxo-2,3,3a,9a-tetrahydro-6H-furo[2',3':4,5][1,3]oxazolo[3,2-a]pyrimidin-2-yl]methyl benzoate[(2S,3S,4S,5S)-3-(benzoyloxy)-4-chloro-5-[2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl]tetrahydro-2-furanyl]methyl benzoate[(2S,3R,5S)-3-(benzoyloxy)-5-[2-oxo-4-thioxo-3,4-dihydro-1(2H)-pyrimidinyl]tetrahydro-2-furanyl]methyl benzoate
