(R)-methyl 2-((tert-butyloxycarbonyl)amino)-2-((3R,4R)-4-(2-methoxy-2-oxoethyl)-2,2,5,5-tetramethyl-1,2,5-oxadisilolan-3-yl)acetate

(R,E)-N-(1-(tert-butyldimethylsilyloxy)-6-chloro-3-oxohex-4-en-2-yl)benzamide

N-((2R,3S,E)-1-(tert-butyldimethylsilyloxy)-6-chloro-3-hydroxyhex-4-en-2-yl)benzamide

(4R,5R,6R)-5-(tert-butyldimethylsilyloxy)-4-((tert-butyldimethylsilyloxy)methyl)-2-phenyl-6-vinyl-5,6-dihydro-4H-1,3-oxazine

2-((4R,5R,6R)-5-((tert-butyldimethylsilyl)oxy)-4-(((tert-butyldimethylsilyl)oxy)methyl)-2-phenyl-5,6-dihydro-4H-1,3-oxazin-6-yl)ethan-1-ol