(2R,3R,4R,5R)-3,4-bis(benzyloxy)-5-<(benzyloxy)methyl>pyrrolidino<1,2-c>oxazole-3-one

(2R,3S,4S,5R,6R)-6-azido-2,3-epoxy-4,5,7-tris(benzyloxy)-2(E)-hepten-1-ol

(2S,3R,4R,5R)-N-butyloxycarbonyl-3,4-bis(benzyloxy)-5-<(benzyloxy)methyl>pyrrolidine-2-carbaldehyde