ethyl (2R,5R)-5-[[(tert-butyldiphenylsilyl)oxy]methyl]-8,8-dimethyl-7,9-dioxatricyclo[4.3.0.02,4]nonane-2-carboxylate

(1R,2S,5S,3R,4R)-4-[(tert-butyldiphenylsilyloxy)methyl]-2,3-O-isopropylidene-2,3-dihydroxybicyclo[3.1.0]hexane-1-carboxylic acid

(1R,2S,5S,3R,4R)-1-azidocarbonyl-4-[(tert-butyldiphenylsilyloxy)methyl]-2,3-O-isopropylidene-2,3-dihydroxybicyclo[3.1.0]hexane

(1R,2S,5S,3R,4R)-1-amino-4-[(tert-butyldiphenylsilyloxy)methyl]-2,3-O-isopropylidene-2,3-dihydroxybicyclo[3.1.0]hexane