3-tert-butyl 4-methyl (2S,4S)-2-tert-butyl-4-((R)-1-(benzyloxy)allyl)oxazolidine-3,4-dicarboxylate

4-benzyl 3-tert-butyl (2S,4S)-2-tert-butyl-4-((R,E)-1-hydroxy-12-oxooctadec-2-enyl)oxazolidine-3,4-dicarboxylate