(2S,4S)-4-azido-2-(dimethoxymethyl)dihydrofuran-3(2H)-one

(2S,3R,4S)-4-Amino-2-hydroxymethyl-tetrahydro-furan-3-ol

(2R,3R,4S)-4-(4-Chloro-pyrrolo[2,3-d]pyrimidin-7-yl)-2-dimethoxymethyl-tetrahydro-furan-3-ol

(2'R,3'R,4'S)-4-chloro-5-(2,2-diethoxyethyl)-6-(2'-dimethoxymethyl-3'-hydroxytetrahydrofuran-4'-yl)-aminopyrimidine

(2'R,3'R,4'S)-2-amino-4-chloro-5-(2,2-diethoxyethyl)-6-(2'-dimethoxymethyl-3'-hydroxy-tetrahydrofuran-4'-yl)-aminopyrimidine