The present invention relates to novel histidine derivatives that can be used for the labeling of biomolecules with radioactive metal tricarbonyls. The new derivatives have a histidine that is derivatized at the N
ε
and at least protected at the N
α
and optionally at the N
δ
; or derivatized at the N
α
and at least protected at the N
α
and optionally at the N
δ
; or derivatized at the N
ε
and N
α
and at least protected at the N
α
and optionally at the N
δ
; or derivatized at the N
ε
; or derivatized at the N
α
; or derivatized at the N
ε
and N
α
; or at least protected at the N
α
and optionally at the N
δ
.
该发明涉及一种新型组
氨酸衍
生物,可用于将
生物分子与放射性
金属三羰基进行标记。这些新衍
生物具有一个在Nε处衍生化的组
氨酸,并且至少在Nα处受保护,可选地在Nδ处受保护;或者在Nα处衍生化,并且至少在Nα处受保护,可选地在Nδ处受保护;或者在Nε和Nα处衍生化,并且至少在Nα处受保护,可选地在Nδ处受保护;或者在Nε处衍生化;或者在Nα处衍生化;或者在Nε和Nα处衍生化;或者至少在Nα处受保护,可选地在Nδ处受保护。