(2S,3R)-1-(benzyloxy)-2,3-butanediol

(R)-4-((S)-2-Benzyloxy-1-hydroxy-ethyl)-[1,3]dioxolan-2-one

(2R,3R)-3-azido-4-(benzyloxy)butane-1,2-diol

(2R,3R)-2-Azido-4-benzyloxy-butane-1,3-diol