Probes for narcotic receptor mediated phenomena. 18. Epimeric 6.alpha.- and 6.beta.-iodo-3,14-dihydroxy-17-(cyclopropylmethyl)-4,5.alpha.-epoxymorphinans as potential ligands for opioid receptor single photon emission computed tomography: synthesis, evaluation, and radiochemistry of [125I]-6.beta.-iodo-3,14-dihydroxy-17-(cyclopropylmethyl)-4,5.alpha.-epoxymorphinan
作者:Brian R. De Costa、Michael J. Iadarola、Richard B. Rothman、Karen F. Berman、Clifford George、Amy H. Newman、Artin Mahboubi、Arthur E. Jacobson、Kenner C. Rice
DOI:10.1021/jm00093a016
日期:1992.7
higher affinity for mu and kappa receptors than naltrexone while the 6 beta-iodo epimer 1 (ioxy) was more potent than its epimer 2. In a comparison of the 6 beta-halogen substituent on binding affinity across opioid receptor subtypes, it was generally found that I greater than Br greater than F. On the basis of the results of in vitro and in vivo testing, 1 was selected as a target for radioiodination