(E)-4-Methyl-3-oxo-2-[(S)-2-triethylsilanyloxy-prop-(E)-ylidene]-hept-4-enenitrile

(2R,3S)-3-((S)-1-Hydroxy-ethyl)-2-((E)-2-methyl-pent-2-enoyl)-oxirane-2-carbonitrile

methyl (2S,3S,4S)-2,3-epoxy-4-(tert-butyldimethylsilyloxy)pentanoate

(2R,3S)-2-((E)-2-Methyl-pent-2-enoyl)-3-((S)-1-triethylsilanyloxy-ethyl)-oxirane-2-carbonitrile

(1S,1'RS,4S,5S)-1-(1'-hydroxy-2'-methylpent-2'-enyl)-4-methyl-3,6-dioxabicyclo[3.1.0]hexan-2-one