Synthesis and histamine H2 agonistic activity of arpromidine analogues: replacement of the pheniramine-like moiety by non-heterocyclic groups
摘要:
Analogues of the potent histamine H-2 agonist arpromidine, characterized by non-heterocyclic groups (phenyl, cyclo-hexyl, alkyl) instead of the pheniramine-like portion, were prepared and tested for their H-2 agonistic and H-1 antagonistic activity in the isolated guinea pig right atrium and ileum, respectively. In the diphenylpropylguanidine series an increase in H-2 agonistic potency resulted from mono- or difluorination at one or both phenyl rings in the meta and/or para position (pD2 less-than-or-equal-to 7.75 vs pD2 = 7.15 for the unsubstituted parent compound). Compounds chlorinated at both phenyl rings were considerably less potent. Highest combined H-2 agonistic/H-1 antagonistic potency was found in the 4-fluorophenyl series. The arpromidine analogue with cyclohexyl and methyl group instead of phenyl and pyridine ring proved to be 30 times more potent than histamine in the atrium. The H-1 antagonistic potency in cyclohexyl compounds was lower than in the diaryl series. Thus, aromatic rings appear not to be required for high H-2 agonistic potency but are useful for combined H-2 agonistic/H-1 antagonistic activity.
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:
US5021431A
申请人:——
公开号:US5021431A
公开(公告)日:1991-06-04
Synthesis and histamine H2 agonistic activity of arpromidine analogues: replacement of the pheniramine-like moiety by non-heterocyclic groups
Analogues of the potent histamine H-2 agonist arpromidine, characterized by non-heterocyclic groups (phenyl, cyclo-hexyl, alkyl) instead of the pheniramine-like portion, were prepared and tested for their H-2 agonistic and H-1 antagonistic activity in the isolated guinea pig right atrium and ileum, respectively. In the diphenylpropylguanidine series an increase in H-2 agonistic potency resulted from mono- or difluorination at one or both phenyl rings in the meta and/or para position (pD2 less-than-or-equal-to 7.75 vs pD2 = 7.15 for the unsubstituted parent compound). Compounds chlorinated at both phenyl rings were considerably less potent. Highest combined H-2 agonistic/H-1 antagonistic potency was found in the 4-fluorophenyl series. The arpromidine analogue with cyclohexyl and methyl group instead of phenyl and pyridine ring proved to be 30 times more potent than histamine in the atrium. The H-1 antagonistic potency in cyclohexyl compounds was lower than in the diaryl series. Thus, aromatic rings appear not to be required for high H-2 agonistic potency but are useful for combined H-2 agonistic/H-1 antagonistic activity.
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##