methyl 2-[(tert-butoxycarbonyl)amino]hex-5-enoate

(S)-4-(3-butenyl)-2,2-dimethyl-3-(1,3-dioxobutyl)-1,3-oxazolidine

(6S,7S,7aS)-6-acetyl-5,6,7,7a-tetrahydro-3,3-dimethyl-7-(2-propenyl)-1H,3H-pyrrolo<1,2-c>oxazol-5-one

[(2S,3S,4S)-3-Allyl-4-(2-methyl-[1,3]dioxolan-2-yl)-pyrrolidin-2-yl]-methanol

(3S,4S,5S)-5-hydroxymethyl-3-(2-methyl-1,3-dioxolan-2-yl)-4-(2-propenyl)-2-pyrrolidinone