1H-Imidazole, 2-bicyclo[2.2.1]hept-5-en-2-yl-

(S)-2-(2-Aza-bicyclo[2.2.1]hept-5-en-2-yl)-3-phenyl-propionic acid methyl ester

N-[(S)-α-Methoxycarbonylbenzyl]-(1R,4S)-2-azabicyclo[2.2.1]hept-5-en

(2S)-methyl 2-((2S)-2-(2-azabicyclo[2.2.1]hept-5-en-2-yl)-3-phenylpropanamido)-4-methylpentanoate

dimethyl 4,4-dimethyltetracyclo[5.2.1.02,6.03,5]dec-8-ene-3,5-dicarboxylate