| 摘要 |
A novel peptide of the formula: <IMAGE> wherein A is hydrogen, alkyl, aralkyl, alkoxyalkyl, hydroxyalkyl or alkoxy; R is <IMAGE> X is -S- or -(CH2)n- where n is 1 or 2 has a weaker TRH releasing activity than TRH and a stronger anaesthesia-antagonistic activity, spontaneous movement-stimulant activity or dopamine-potentiating activity than TRH. |
