Synthesis and in vitro pharmacology of arpromidine and related phenyl(pyridylalkyl)guanidines, a potential new class of positive inotropic drugs
作者:Armin Buschauer
DOI:10.1021/jm00128a045
日期:1989.8
-yl)propyl]-N2-[2-[[(5-methyl-1H-imidazol-4- yl)methyl]thio]ethyl]guanidine) by more lipophilic H2-nonspecific pheniramine-like structures resulted in potent H2 agonists with up to 160 times the activity of histamine in the isolated, spontaneously beating guinea pig right atrium. Additionally, the compounds proved to be moderate H1 antagonists. Highest H2-agonistic potency was found in compounds characterized
在嘧啶(1,N1- [3-(1H-咪唑-4-基)丙基] -N2- [2-[[(5-甲基-1H-咪唑-4-基)甲基]硫代中的西咪替丁部分的取代[乙基]胍]亲脂性更强的H2-非特异性苯丙胺样结构导致强效的H2激动剂,其在离体的自发跳动的豚鼠右心房中的组胺活性高达160倍。此外,该化合物被证明是中度H1拮抗剂。在以连接芳族环和胍基的三元碳链为特征的化合物中发现了最高的H2激动力。通过苯环的间位或对位的卤素取代基,使心房的活性提高了2-4倍。最高的H1拮抗效力位于对位卤代化合物中,pF代表两个受体模型中的最佳取代基。相应的胍52(ar啶,N1- [3-(4-氟苯基)-3-吡啶-2-基丙基] -N2- [3-(1H-咪唑-4-基)丙基]胍结合约100倍于组胺对H2受体的活性,在苯乙胺范围内具有H1拮抗力。通过与苯环上的卤素,例如3,4-F2、3,5-F2和3,4-Cl2(63-65)分解,可以进一步