tert-butyl (3S,4S)-4-(allyloxy)-5-(tert-butyldimethylsilyloxy)pent-1-en-3-yl(benzyl)carbamate

tert-butyl (2S,3S)-2-formyl-tetrahydro-2H-pyran-3-ylcarbamate

tert-butyl benzyl[(2S,3S)-(2-(tert-butyldimethylsilyloxy)methyl)-3,6-dihydro-2H-pyran-3-yl]carbamate

tert-butyl (2S,3S)-2-[(tert-butyldimethylsilyloxy)methyl]-3,6-dihydro-2H-pyran-3-ylcarbamate

tert-butyl ((2S,3S)-2-(hydroxymethyl)tetrahydro-2H-pyran-3-yl)carbamate