3-Benzoyl-1-[(E)-4-(trityloxy)-2-butenyl]-1,2,3,4-tetrahydro-2,4-pyrimidinedione → 1-[(E)-4-trityloxy-2-butenyl]uracil

Beteiligte Stoffe

Reaktionsschritte

Compound (12) (50 mg, 0.09 mmol) was dissolved and stirred at room temperature in a solution 0.2 M (5 ml) of MeONa in MeOH. The reaction was left at room temperature overnight, then the solution was neutralized with Dowex H+ ion exchange resin. The resin was filtered off and the filtrate was concentrated under reduced pressure to an oil which was purified by chromatography using CHCl3→CHCl3/MeOH 95:5 as gradient which gave the title compound as a white solid (38 mg, 90%). Rf: 0.51 in CHCl3/MeOH 90:10, M.p. 70-72° C.

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