3-苯基环戊-2-烯-1-酮

乙基[(1S)-1-乙炔基-2,3-二羟基环戊基]乙酸酯

diethyl 2-[(benzylamino)methylidene]propanedioate

(3aS,6aR)-2-Benzyl-4-oxo-hexahydro-cyclopenta[c]pyrrole-1,1-dicarboxylic acid diethyl ester

1,4-Dibenzyl-piperazine-2,2,5,5-tetracarboxylic acid tetraethyl ester