Synthesis of (+)-cis-N-(4-Isothiocyanatobenzyl)-N-normetazocine, an Isothiocyanate Derivative of N-Benzylnormetazocine as Acylant Agent for the σ1 Receptor
Synthesis of (+)-cis-N-(4-Isothiocyanatobenzyl)-N-normetazocine, an Isothiocyanate Derivative of N-Benzylnormetazocine as Acylant Agent for the σ1 Receptor
(+)-cis-N-(para-, meta-, and ortho-substituted benzyl)-N-normetazocines: Synthesis and binding affinity at the [3H]-(+)-pentazocine-labeled (.sigma.1) site and quantitative structure-affinity relationship studies
作者:S. Wayne Mascarella、Xu Bai、Wanda Williams、Bethel Sine、Wayne D. Bowen、F. Ivy Carroll
DOI:10.1021/jm00003a019
日期:1995.2
sigma l receptor ligands have potential pharmacological significance as antipsychotic drugs, as tools in the study of drug-induced motor function disorders, and as radiopharmaceutical imaging agents for the noninvasive imaging of malignant tumors in human subjects. A series of substituted N-benzyl-N-normetazocines were synthesized and their binding affinity at the sigma l receptor evaluated in order to examine the details of the structure-affinity relationships (SAR) of a previously determined high-affinity lead compound, (+)-cis-N-benzyl-N-normetazocine (K-i = 0.67 nM). Variation in the benzyl substituents of these compounds produced a 1590-fold range in affinity at the sigma l receptor from the unsubstituted benzyl analog to the lowest affinity p-tert-butylbenzyl analog (K-i - 1066 nM). The nanomolar binding affinity for the sigma l receptor of (+)-cis-N-(4-fluorobenzyl)-N-normetzocine suggests that this analog may be a useful PET imaging agent.