(4R)-4-[(tert-butyldimethylsilanyloxy)methyl]-5-vinyl-1,3-oxazolidine-2-one

(1R,2R,6S)-2-(tert-butyldimethylsilanyloxymethyl)-7-oxa-3-aza-bicyclo[4.1.0]heptan-4-one

tert-butyl ((2R)-1-((tert-butyldimethylsilyl)oxy)-3-hydroxypent-4-en-2-yl)carbamate