2-(S)-(dibenzylamino)-8-oxo-6-decenoic acid benzyl ester

benzyl (2S)-2-(dibenzylamino)-8-[(R)-2,2-dimethyl-1,3-dioxolan-4-yl]-8-oxo-6-octenoate

(2S,9S,E)-2-(dibenzylamino)-9-(tert-butyldimethylsilyloxy)-8-oxo-6-decenoic acid benzyl ester