(S)-4-[2-((2S,3S,4R,5S,6R)-4,5-Bis-benzyloxy-6-benzyloxymethyl-3-hydroxy-tetrahydro-pyran-2-yl)-ethyl]-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester

(S)-4-[3-((1R,2R,3R)-2,3-Bis-benzyloxy-1-benzyloxymethyl-pent-4-enyloxy)-but-3-enyl]-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester