Fluorescent ligands for the histamine H2 receptor: synthesis and preliminary characterization
                                
                                    
                                        作者:Sarel F. Malan、Andre van Marle、Wiro M. Menge、Valentina Zuliana、Marcel Hoffman、Henk Timmerman、Rob Leurs                                    
                                    
                                        DOI:10.1016/j.bmc.2004.09.018
                                    
                                    
                                        日期:2004.12
                                    
                                    -3-[3-(Pipesidinomethyl)pllenoxy]alkyl, N-cyano-N'-[omega-[3-(l-pipes-idinylinetllyl)phenoxy]alkyl]guanidine and 2-(5-methyl4-imidazolyl)nnethyl thioethyl derivatives containing fluorescent functionalities were synthesized and the histamine H-2, receptor affinity was evaluated using the H, antagonist [I-125]-aminopotentidine. The compounds exhibited weak to potent H-2, receptor affinity with pK(1) values ranging from <4 to 8.85. The highest H, receptor affinity was observed for N-cyailo-N'-[omega-[3-(1-piperidinylinethyl)phenoxy]alkyl]guanidines substituted with methylanthranilate (13), cyanoindolizine (6) and cyanoisoindole (11) moieties via an ethyl or propyl linker. (C) 2004 Elsevier Ltd. All rights reserved.