论文部分内容阅读
The syntheses of 5-substituted-3-[(2' R' 4' R)-4v -hydroxy-2'-hydroxymethyltetrahydrofuran-4'-yl]-1, 2,4-oxadiazoles and their epimers were accomplished with the aid of the construction of 1, 2, 4-oxadiazoles by condensation of O-acylated cyanohydrins wit