(S,E)-ethyl 3-(3-(2-cyclopropylideneethyl)-2-oxooxazolidin-4-yl)acrylate

(S,E)-3-(2-cyclopropylideneethyl)-4-(3-hydroxyprop-1-enyl)oxazolidin-2-one

2-((6S,7S,7aS)-3-oxo-6-(prop-1-en-2-yl)hexahydropyrrolo[1,2-c]oxazol-7-yl)acetaldehyde

2-(tert-butyl) 3,7a-dimethyl (3S,3aS,7aS)-7-methoxy-5-((trimethylsilyl)oxy)-3,3a,4,7-tetrahydro-1H-isoindole-2,3,7a-tricarboxylate

tert-butyl (2S,3S,4S)-3-(2-(benzyloxy)ethyl)-2-(hydroxymethyl)-4-(prop-1-en-2-yl)pyrrolidine-1-carboxylate