(S,E)-3-(3-(3-(buta-2,3-dien-1-yl)-2-oxooxazolidin-4-yl)acryloyl)-4,4-dimethyloxazolidin-2-one

(2S,3S,4S)-N-(benzyloxycarbonyl)-2-carboxy-4-(1-methylethenyl)pyrrolidine-3-acetic acid

(2S,3S,4S)-1-(benzyloxycarbonyl)-3-(2-hydroxyethyl)-2-(hydroxymethyl)-4-isopropenylpyrrolidine

(2S,3S,4R)-[1-(benzyloxycarbonyl)-2-(hydroxymethyl)-4-(1-hydroxy-1-methylethyl)]-3-pyrrolidineacetic acid lactone

(2S,3S,4S)-benzyl 2-(((tert-butyldimethylsilyl)oxy)methyl)-3-(2-hydroxyethyl)-4-(prop-1-en-2-yl)pyrrolidine-1-carboxylate