(E)-3-(4-Methoxy-benzyloxy)-acrylic acid

4-benzyl 3-tert-butyl (2S,4S)-2-tert-butyl-4-((R)-1-(4-methoxybenzyloxy)allyl)oxazolidine-3,4-dicarboxylate

4-benzyl 3-tert-butyl (2R,4R)-2-tert-butyl-4-((S)-1-(4-methoxybenzyloxy)allyl)oxazolidine-3,4-dicarboxylate

3-tert-butyl 4-((E)-3-(4-methoxybenzyloxy)allyl) (2R,4S)-2-tert-butyloxazolidine-3,4-dicarboxylate

3-tert-butyl 4-((E)-3-(4-methoxybenzyloxy)allyl) (2S,4R)-2-tert-butyloxazolidine-3,4-dicarboxylate