Synthesis and receptor binding properties of fluoro- and iodo-substituted high-affinity .sigma.-receptor ligands: identification of potential PET and SPECT .sigma.-receptor imaging agents
作者:Brian De Costa、Lilian Radesca、Celia Dominguez、Lisa Di Paolo、Wayne D. Bowen
DOI:10.1021/jm00090a012
日期:1992.6
second class of PET/SPECT ligands was based upon the N-(arylethyl)-N-alkyl-2-(1-pyrrolidinyl)ethylamine class of sigma ligands; N-[2-(3,4-dichlorophenyl)-1-ethyl]-N-(3-fluoro-1-propyl)-2-(1- pyrrolidinyl)ethylamine (5) was obtained via N-alkylation of N-[2-(3,4-dichlorophenyl)-1-ethyl]-2-(1-pyrrolidinyl)ethylamine (14) with 3-fluoropropyl p-toluenesulfonate. 5 exhibited Ki values of 4.22 and 5.07 nM for
基于三种不同的sigma受体配体结构类型,合成了未标记的对sigma受体具有很高亲和力和选择性的氟代和碘代取代基。评估这些化合物的sigma受体亲和力和特异性,以评估其作为PET / SPECT显像剂的潜力。因此,基于(+)-苯并吗啉类σ配体的(+)-和(-)-N-(5-氟-1-戊基)去甲甲恶嗪[[+]-和(-)-4]通过用5-[(甲基磺酰基)氧基] -1-戊基氟化物将光学纯的(+)-和(-)-去甲偶氮N烷基化(11)。(+)-和(-)-4取代的[3H](+)-3-PPP的Ki值分别为0.29和73.6 nM和[3H](+)-戊唑嗪的Ki值分别为10.5和38.9 nM。第二类PET / SPECT配体基于σ配体的N-(芳基乙基)-N-烷基-2-(1-吡咯烷基基)乙胺类;通过N-的N-烷基化获得N- [2-(3,4-二氯苯基)-1-乙基] -N-(3-氟-1-丙基)-2-(1-吡咯烷基)乙胺(5)。