tert-butyl (3R,5R)-5-(tert-butyldimethylsilyloxy)-6-hydroxy-2,2-dimethylhexan-3-ylcarbamate

tert-butyl ((1R,3R)-3-((tert-butyldimethylsilyl)oxy)-1-cyclopropyl-4-hydroxybutyl)carbamate

(3R,5S)-tert-butyl 5-allyl-3-(tert-butyldimethylsilyloxy)-2-oxopyrrolidine-1-carboxylate

(3R,5R)-tert-butyl 3-(tert-butyldimethylsilyloxy)-2-oxo-5-phenylpyrrolidine-1-carboxylate