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

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

(3S,6S,6aS,7S,9aS)-7-[(2R,3R)-4-(benzyloxy)-3-{[tert-butyl(dimethyl)silyl]oxy}-2-methylbutyl]-3-tert-butyl-6a-hydroxy-6-methyldihydrofuro[3',4':2,3]pyrrolo[1,2-c][1,3]oxazole-5,9(6H)-dione

(3S,6R,6aS,7S,9aS)-7-[(2R,3R)-4-(benzyloxy)-3-{[tert-butyl(dimethyl)silyl]oxy}-2-methylbutyl]-3-tert-butyl-6a-hydroxy-6-methyldihydrofuro[3',4':2,3]pyrrolo[1,2-c][1,3]oxazole-5,9(6H)-dione

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