(2R,3R,4R)-3-(tert-butyldimethylsilyloxy)-2-((tert-butyldimethylsilyloxy)methyl)piperidin-4-ol

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