((S)-1,4-Dibenzyl-2-oxo-pent-4-enyl)-carbamic acid tert-butyl ester

(4R,5S)-3-benzyl-5-{(1S)-1-[(tert-butoxycarbonyl)amino]-2-phenylethyl}dihydrofuran-2-(3H)-one

(4R,5S)-5-Dibenzylamino-4-hydroxy-2-methylene-6-phenyl-hexanoic acid methyl ester

Benzenepropanal, a-[bis(phenylmethyl)amino]-, (aS)-

(3R,5R)-3-Benzyl-5-((S)-1-dibenzylamino-2-phenyl-ethyl)-dihydro-furan-2-one