Fluorescent ligands for the histamine H2 receptor: synthesis and preliminary characterization
摘要:
-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.
Es wurden die N-substituierten 4-[(2-Amino-ethylmercapto)-methyl]-imidazole 2 und 3 dargestellt und auf histaminartige Wirkung untersucht。Die Thioharnstoff- 和 Cyanoguanidin-Derivate von 3b zeigten keine H2-antihistaminische Wirksamkeit。
Pharmaceutical compositions and methods of inhibiting H-1 and H-2
申请人:Smith Kline & French Laboratories Limited
公开号:US04000302A1
公开(公告)日:1976-12-28
Pharmaceutical compositions and methods of inhibiting H-1 and H-2 histamine receptors by administering an antihistamine and an H-2 histamine receptor inhibitor. Exemplary of the antihistamine in the compositions and methods of this invention is mepyramine and exemplary of the H-2 histamine receptor inhibitor is N-cyano-N'-methyl-N"-[2-((4-methyl-5-imidazolyl)-methylthio)ethyl]guanidin e.
Pharmaceutical compositions and method of inhibiting H-1 and H-2
申请人:Smith Kline & French Laboratories Limited
公开号:US03954982A1
公开(公告)日:1976-05-04
Pharmaceutical compositions and methods of inhibiting H-1 and H-2 histamine receptors by administering an antihistamine and an H-2 histamine receptor inhibitor. Exemplary of the antihistamine in the compositions and methods of this invention is mepyramine and exemplary of the H-2 histamine receptor inhibitor is N-methyl-N'-[4-(5)-imidazolyl)butyl]thiourea.