Methoxy- and Fluorine-Substituted Analogs of O-1302: Synthesis and in Vitro Binding Affinity for the CB1 Cannabinoid Receptor
作者:Shintaro Tobiishi、Toru Sasada、Yumiko Nojiri、Fumihiko Yamamoto、Takahiro Mukai、Kiichi Ishiwata、Minoru Maeda
DOI:10.1248/cpb.55.1213
日期:——
respective amine with pyrazole carboxylic acid, in order to develop tracers for medical imaging. Their potency for inhibiting the binding of the CB1 antagonist [(3)H]SR141716 was evaluated with the aim of developing positron emission tomography (PET) ligands for the cerebral cannabinoid CB1 receptor. These analogs bearing a piperidinyl carboxamide at the C(3) of the pyrazole ring exhibited affinities
在N-(哌啶基)-1-(2,4-二氯苯基)-4-甲基-5-(4-戊基苯基)-1H-吡唑-3-甲酰胺的戊基链的末端碳上取代的甲氧基和氟类似物( O-1302)是由N-(哌啶基)-5-(4-氯苯基)-1-的1,5-二芳基吡唑核心模板基于5-苯基-1-戊醇合成而成的多步方法(2,4-二氯苯基)-4-甲基-1H-吡唑-3-羧酰胺(SR141716)通过将相应的胺与吡唑羧酸缩合,以开发用于医学成像的示踪剂。为了开发脑大麻素CB1受体的正电子发射断层扫描(PET)配体,评估了它们抑制CB1拮抗剂[(3)H] SR141716结合的能力。这些类似物在吡唑环的C(3)处带有哌啶子基羧酰胺,其亲和力与CB1参考拮抗剂SR141716相当,因此需要使用放射性标记的形式进行进一步的生物学成像研究。在吡唑环的C(3)处取代的吗啉环导致CB1亲和力降低。