Histamine analogues: imidazolylalkylguanidines, synthesis and in vitro pharmacology
摘要:
Impromidine analogues characterized by modified side chains connecting the guanidine and imidazole moieties have been prepared and tested for H-2-agonistic activity on isolated guinea-pig right atrium and for H-1-antagonistic activity on guinea-pig ileum, respectively. 3-(1H-Imidazol-4-yl)propylguanidines with varied cimetidine-like side chain (5a-d) proved to be almost full H-2-agonists and 5-70 times more potent than histamine, whereas compounds with beta- or gamma-methyl branched imidazolylpropyl moiety (5e, 5f, 5h) are only weak partial H-2-agonists. Both unsaturated impromidine analogues (5i, 5j) are full H-2-agonists, the (Z)-configurated compound 5j being about 4 times more potent than the (E)-configurated derivate 5i.
Imidazolyl alkyl guanidine derivatives, processes for their preparation
申请人:Heumann Pharma GmbH & Co.
公开号:US05021431A1
公开(公告)日:1991-06-04
New imidazolylalkyl-guanidine derivatives are described, which by virtue of their agonistic action on histamine-H.sub.2 receptors and in part also due to their additional H.sub.1 -antagonistic receptor activity can be used in the treatment of cardiac diseases, certain forms of hypertension and diseases of arterial occlusion. These imidazolylalkyl-guanidine derivatives correspond to the general formula I: ##STR1##
3‐diphenylpropyl substituents. Guanidines 10–12 were obtained from acidic hydrolysis of corresponding N‐benzoyl guanidines 7, 8, and 15, accessible by successive aminolysis of diphenyl N‐benzoyl carbonimidate (2) according to known methods. Compared with leads 10a and 11a lipophilic substitution affords almost equipotent H2‐agonists 10b‐d and 11b‐d, while substituents with increasing lipophilicity enhance both
Imidazolylalkylguanidinderivate, Verfahren zu ihrer Herstellung und diese Verbindungen enthaltende Arzneimittel
申请人:HEUMANN PHARMA GMBH & CO
公开号:EP0199845A1
公开(公告)日:1986-11-05
Es werden neue Imidazolylalkylguanidinderivate beschrieben, die aufgrund ihrer agonistischen Wirkung auf Histamin-H2-Rezeptoren sowie zum Teil wegen ihrer zusätzlichen H1-antagonistischen Rezeptoraktivität bei Erkrankungen des Herzens, bei bestimmten Formen der Hypertonie sowie bei arteriellen Verschlußkrankheiten eingesetzt werden können.
Es handelt sich um Imidazolylalkylguanidinderivate der allgemeinen Formel I:
本文描述了新的咪唑烷基胍衍生物,由于其对组胺 H2 受体的激动作用,以及部分由于其额外的 H1 拮抗受体活性,这些衍生物可用于治疗心脏病、某些形式的高血压和动脉闭塞性疾病。 这些是通式 I 的咪唑烷基胍衍生物:
The design of potent, selective, non-covalent, peptide thrombin inhibitors utilizing imidazole as a S1 binding element
作者:Michael R. Wiley、Leonard C. Weir、Steven L. Briggs、Nickolay Y. Chirgadze、David Clawson、Donetta S. Gifford-Moore、Aaron L. Schacht、Gerald F. Smith、Vasu Vasudevan、Larry L. Zornes、Valentine J. Klimkowski
DOI:10.1016/s0960-894x(99)00459-x
日期:1999.9
Modeling of neutral or mildly basic functional groups in the S1 site of thrombin led to the targeting of imidazole as a S1 binding element and correctly predicted the optimal chain length for connecting this group with the S2 and S3 binding elements. Derivatives of 4-(3-aminopropyl)-imidazole can be selective inhibitors of thrombin demonstrating potent anticoagulant activity. (C) 1999 Elsevier Science Ltd. All rights reserved.