Reserpin Arginin Rescinnamin 1,2-Epoxycyclopentan Ethylpiperidin-3-carboxylat N-γ-L-Glutamyl-L-glutaminsure Ethyl-2-oxopiperidin-3-carboxylat DL-Prolin N-α-Benzoyl-L-arginin cis-4-Hydroxy-D-prolin Yohimbin N2-[(Phenylmethoxy)carbonyl]-L-arginin Piperidin-3-carbonsure N-1-Naphthyl-l-glutamin N-L-γ-Glutamyl-3-phenyl-L-alanin