tert-butyl (2S,4R)-4-(tert-butyldimethylsilyloxy)-5-hydroxy-1-phenylpentan-2-yl-carbamate

tert-butyl (3R,5R)-3-((tert-butyldimethylsilyl)oxy)-5-cyclopropyl-2-oxopyrrolidine-1-carboxylate

(2R,3R,5R)-2-benzyl-3-(tert-butyldimethylsilyloxy)-1-methyl-5-phenylpyrrolidine

(R)-N-((2S,4R)-4,5-bis(tert-butyldimethylsilyloxy)pentan-2-yl)-2-methylpropane-2-sulfinamide