(2S,3S,3aS,4aS,9aR)-2-Dimethoxymethyl-4a-(1,3-diphenyl-imidazolidin-2-yl)-3-hydroxy-hexahydro-furo[2',3':4,5]oxazolo[3,2-c]pyrimidine-6,8-dione 在
DOWEX-50(H+) 作用下,
以
四氢呋喃 、
水 为溶剂,
以100%的产率得到(2S,3S,3aS,4aS,9aR)-4a-Dihydroxymethyl-2-dimethoxymethyl-3-hydroxy-hexahydro-furo[2',3':4,5]oxazolo[3,2-c]pyrimidine-6,8-dione