Development of new brain imaging agents based upon nocaine–modafinil hybrid monoamine transporter inhibitors
作者:John L. Musachio、Jinsoo Hong、Masanori Ichise、Nicholas Seneca、Amira K. Brown、Jeih-San Liow、Christer Halldin、Robert B. Innis、Victor W. Pike、Rong He、Jia Zhou、Alan P. Kozikowski
DOI:10.1016/j.bmcl.2006.03.066
日期:2006.6
C-11-labeled (+)-trans-2-[[(3R,4S)-4-(4-chlorophenyl)-1-methylpiperidin-3-yl]methylsulfanyl]ethanol ([C-11]5) and (+)-trans-2-[[(3R,4S)-4-(4-chlorophenyl)-1-methylpiperidin-3-yl]methylsulfanyl]-1-(piperidin-1-yl)ethanone ([C-11]6) were synthesized and evaluated as new imaging agents for the norepinephrine transporter (NET). [C-11]5 and [C-11]6 display high affinity for the NET in vitro (K-i = 0.94 and 0.68 nM, respectively) and significant selectivity over the dopamine (DAT) and serotonin transporters (SERT). Because of their high affinity and favorable transporter selectivities we speculated that these ligands might serve as useful PET agents for imaging NET in vivo. Contrary to our expectations, both of these ligands provided brain images that were more typical of those shown by agents binding to the DAT. (c) 2006 Elsevier Ltd. All rights reserved.