上游原料
ethyl 2-formyl-3-oxopropanoate(2R,3R,4S,5R)-2-(6-amino-2-hydrazino-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydro-3,4-furandiolethyl 1-{6-amino-9-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydro-2-furanyl]-9H-purin-2-yl}-1H-pyrazole-4-carboxylate2,6-dichloro-9H-purine(2R,3R,4R,5R)-2-acetoxy-5-((benzoyloxy)methyl)tetrahydrofuran-3,4-diyl dibenzoate(2R,3R,4R,5R)-2-((benzoyloxy)methyl)-5-chlorotetrahydrofuran-3,4-diyl dibenzoate(2R,3R,4R,5R)-4-(benzoyloxy)-2-[(benzoyloxy)methyl]-5-(2,6-dichloro-9H-purin-9-yl)tetrahydro-3-furanyl benzoate(3R,4R,5R)-2-(2,6-dichloro-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol(2R,3R,4S,5R)-2-(6-amino-2-hydrazino-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydro-3,4-furandiolethyl 1-(9-((3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-6-(((E)-3-ethoxy-2-formyl-3-oxoprop-1-en-1-yl)amino)-9H-purin-2-yl)-1H-pyrazole-4-carboxylate
