(5S,6R)-6-tert-butyldimethylsilyloxy-5-hydroxyazepane-2-one

6-azido-5-tert-butyldiphenylsilyloxy-2,3,6-trideoxy-D-erythro-hexono-1,4-lactone

(2S,4S,5S)-2-(2-propyl)-4-hydroxy-5-<(tert-butyloxycarbonyl)amino>-7-methyloctanoic acid, γ-lactone

(4S)-<(tert-butyldimethylsilyl)oxy>-5(S)-<(tert-butyloxycarbonyl)amino>-2(S)-isopropyl-7-methyloctanoic acid

(5S,1'S)-5-(1'-azido)ethyl-4,5-dihydro-2-(3H)-furanone