上游原料
1-[(2R,3S,4S,5R)-3,4-Dihydroxy-5-(hydroxymethyl)tetrahydro-2-furanyl]-2,4-dioxo-1,2,3,4-tetrahydro-5-pyrimidinecarbaldehyde(E)-3-[1-[(2R,3S,4S,5R)-3,4-Dihydroxy-5-(hydroxymethyl)tetrahydro-2-furanyl]-2,4-dioxo-1,2,3,4-tetrahydro-5-pyrimidinyl]-2-propenoic acidMalonic acid1-[(2R,3S,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydro-2-furanyl]-5-(hydroxymethyl)-2,4(1H,3H)-pyrimidinedione; 5-hydroxymethyl-1-beta-D-arabinofuranosyluracil5-(chloromethyl)-1-[(2R,3S,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydro-2-furanyl]-2,4(1H,3H)-pyrimidinedione([1-[(2R,3S,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydro-2-furanyl]-2,4-dioxo-1,2,3,4-tetrahydro-5-pyrimidinyl]methyl)(triphenyl)phosphonium chloride1-[(2R,3S,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydro-2-furanyl]-5-vinyl-2,4(1H,3H)-pyrimidinedione
