allyl 3-(benzyl(phenyl)amino)-2-methyl-3-oxopropanoate

1,1'-dibenzyl-3,3'-spirobi[indoline]-2,2'-dione

methyl 2,2-dimethyl-3-(N-phenylamino)propionate

(E)-5-Benzyloxy-3-(benzyl-phenyl-amino)-2-cyanomethyl-pent-2-enoic acid ethyl ester

(E)-3-(Benzyl-phenyl-amino)-2-cyanomethyl-4-(2-methyl-[1,3]dioxolan-2-yl)-but-2-enoic acid ethyl ester