a wide variety of neurological disorders such as Alzheimer’s disease, schizophrenia, and epilepsy. Imaging agents for PET and SPECT that target NMDARs in a subtype-selective fashion may enable better characterization of those disorders and enhance drug development. On the basis of a pyrazoline derivative that demonstrated neuroprotective effects in vivo, we synthesized a series of para-substituted analogues
各种的异常活性Ñ甲基d
天冬氨酸受体(N
MDAR)的亚型已经牵涉在多种神经病症,如阿尔茨海默氏病,精神分裂症和癫痫的。以亚型选择性方式靶向N
MDAR的PET和
SPECT显像剂可以更好地表征这些疾病并增强药物开发。基于
吡唑啉衍
生物在体内表现出神经保护作用,我们合成了一系列对位取代的类似物,并测量了它们对各种N
MDAR亚型的亲和力。化合物4a – c和4e与GluN1 / 2B相比,GluN1 / 2A亚型具有更大的纳摩尔亲和力。生成了[ 124/125 I] 4d和[ 11 C] 4e(即[ 124/125 I] 11d和[ 11 C] 11e)的二甲氧基甲氧基(前药)类似物,并在离体放射自显影中测试了N
MDAR结合特异性和大脑
生物分布研究。尽管可以通过放射自显影和
生物分布研究证明[ 125 I] 11d和[ 11 C] 11e的N
MDAR特异性结合,但[ 124 I] 11d和[ 11 ]均未成像C]