5-methyl-1-[(2R,3aR,4R)-2-(tetrahydropyran-2-yloxymethyl)-hexahydropyrrolo[1,2-b]isoxazol-4-yl]-1H-pyrimidine-2,4-dione 在
Amberlyst 15 作用下,
以
甲醇 为溶剂,
反应 2.0h,
以90%的产率得到(2R,3aR,4R)-1-(2-hydroxymethylhexahydropyrrolo[1,2-b]isoxazol-4-yl)-5-methyl-1H-pyrimidine-2,4-dione