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    • 7. 发明申请
    • P-GP RADIOTRACERS FOR IMAGING AS BIOMARKER INVOLVED IN ONSET OF NEURODEGENERATIVE DISEASES
    • 用于成像生物标记物的P-GP放射线照相机参与神经干细胞移植疾病
    • WO2016174496A1
    • 2016-11-03
    • PCT/IB2015/053046
    • 2015-04-27
    • BIOFORDRUG S.R.L.
    • GHAFIR EL IDRISSI, ImaneCANTORE, MariangelaBERARDI, FrancescoLEOPOLDO, MarcelloPERRONE, RobertoCOLABUFO, Nicola Antonio
    • C07D217/04C07D217/06A61K31/472A61P25/28
    • C07D217/04C07D217/06
    • The invention includes a new class of radiolabeled compounds of formula I able to bind P-glycoprotein with high affinity and selectivity. The protein prevents accumulation in the brain of a wide range of drugs and, changes in P-gp expression and function, are also believed to occur in several neurological disorder, such as Alzheimer's disease (AD). Indeed, it is widely reported that decreased expression of P- gp and/or activity at the BBB level could cause accumulation of I3- amyloid plaques, the main hallmark of AD onset. 13-amyloid is a P-gp substrate, and these results support the importance of P-gp in the clearance of 13-amyloid peptide from brain parenchyma. For this reason, P-gp can be considered a useful biomarker for the early diagnosis of neurodegeneration. There is considerable interest in the development of P-gp PET radiotracers for imaging expression and function of P-gp. Formula I wherein the compound is labeled with an isotope selected from H, 11 C 14 C, 13 N, 150 18 F 19 F, 75 Br, 76 Br, 79 Br.
    • 本发明包括能够以高亲和力和选择性结合P-糖蛋白的新一类式I的放射性标记化合物。 蛋白质可以预防大量药物的脑部积聚,并且P-gp表达和功能的变化也被认为发生在几种神经障碍,如阿尔茨海默病(AD)。 事实上,广泛报道的是,BBB水平的P- gp和/或活性的降低可能导致I3淀粉样斑块的积累,这是AD发病的主要标志。 13-淀粉样蛋白是P-gp底物,这些结果支持P-gp在来自脑实质的13-淀粉样蛋白肽清除中的重要性。 因此,P-gp可被认为是神经退行性早期诊断的有用生物标志物。 对P-gp PET放射性示踪剂的发展有相当的兴趣,用于成像表达和P-gp的功能。 式I化合物用选自H,11C 14 C,13 N,150 18 F 19 F,75 Br,76 Br,79 Br的同位素标记。