This patent application describes the preparation of cyclic and branched peptides of general formula (I) and their conjugated derivatives labelled with a paramagnetic or radioactive metal. The compounds of the present invention are used as diagnostic agents to identify and locate primary tumours and their metastases which over-express type A and/or B cholecystokinin receptors, and as therapeutic agents and cholecystokinin agonists or antagonists.
本专利申请描述了通式(I)的环状和支链肽及其与顺磁性或放射性
金属标记的共轭衍
生物的制备方法。本发明的化合物可用作诊断药剂,用于识别和定位过度表达 A 型和/或 B 型胆囊收缩素受体的原发性肿瘤及其转移瘤,也可用作治疗药剂和胆囊收缩素激动剂或拮抗剂。