75971-14-1Relevant academic research and scientific papers
N-(1-methyl-3-pyrrolidinyl)-1-(phenylmethyl)-1H-benzimidazol-2-amine and analogs as antiarrhythmic and muscle relaxing agents
-
, (2008/06/13)
A method of treating cardiac arrhythmias and muscle tension and spasticity with N-(1-methyl-3-pyrrolidinyl)-1-(phenylmethyl)-1H-benzimidazol-2-amine and analogs and the pharmaceutical compositions are herein disclosed. Illustratively, the compound having the structure: STR1 corrects an induced arrhythmia in 7 out of 8 dogs at 7 mg/kg IV and has an ED50 of 21 mg/kg in the mouse Straub-tail test.
New antihistaminic N-heterocyclic 4-piperidinamines. 1. Synthesis and antihistaminic activity of N-(4-piperidinyl)-1H-benzimidazol-2-amines
Janssens,Torremans,Janssen,Stokbroekx,Luyckx
, p. 1925 - 1933 (2007/10/02)
The synthesis of a series N-(4-piperidinyl)-1H-benzimidazol-2-amines and the preliminary evaluation of their in vitro and in vivo antihistaminic activity are described. Cyclodesulfurization of (2-aminophenyl) thioureas with mercury(II) oxide resulted in 2-aminobenzimidazole intermediates, which were monoalkylated on the endo-nitrogen atom. After deprotection of the piperideine nitrogen atom with 48% aqueous hydrobromic acid solution, the title compounds were obtained by three different methods, viz. alkylation, reductive amination, or oxirane ring-opening reactions. The in vivo antihistaminic activity was evaluated by the compound 48/80 induced lethality test in rats and histamine-induced lethality test in guinea pigs after oral and/or subcutaneous administration. The duration of action, for a selected number of compounds, was studied in the guinea pig. The phenylethyl derivatives showed the most potent antihistamine properties after oral administration in both animal species.
