2-甲基-(4z)-(41-甲氧苯亚甲基)-5(4H)-口恶唑酮

(2S,5S)-N-[(S)-N-bis(methylthio)methylene-O-methylthyrosyl]-2,5-bis(methoxymethoxymethyl)pyrrolidine

(S,Z)-3-benzylidene-6-methylpiperazine-2,5-dione

(S)-1-Acetyl-3-[1-(4-methoxy-phenyl)-meth-(Z)-ylidene]-6-methyl-piperazine-2,5-dione

L-酪氨酸