ethyl (2S,3S,3aR,9aS)-3-hydroxy-2-(hydroxymethyl)-6-oxo-2,3,3a,9a-tetrahydrofuro[1,2][1,3]oxazolo[3,4-a]pyrimidine-8-carboxylate 在
氨 作用下,
以
甲醇 为溶剂,
生成
(3aS)-3c-hydroxy-2t-hydroxymethyl-6-oxo-(3ar,9ac)-2,3,3a,9a-tetrahydro-6H-furo[2',3':4,5]oxazolo[3,2-a]pyrimidine-8-carboxylic acid amide