Identification | Back Directory | [Name]
(endo-N-8-methyl-8-azabicyclo-(3.2.1)oct-3-yl)-2,3-dihydro-3-isopropyl-2-oxo-1H-benzimidazol-1-carboxamide | [CAS]
134296-40-5 | [Synonyms]
BIMU-8 BIMU8 hydrate (endo-N-8-methyl-8-azabicyclo-(3.2.1)oct-3-yl)-2,3-dihydro-3-isopropyl-2-oxo-1H-benzimidazol-1-carboxamide N-[(1R,5S)-8-methyl-8-azabicyclo[3.2.1]octan-3-yl]-2-oxo-3-propan-2-ylbenzimidazole-1-carboxamide,hydrochloride 2,3-Dihydro-N-[(3-endo)-8-methyl-8-azabicyclo[3.2.1]oct-3-yl]-3-(1-methylethyl)-2-oxo-1H-benzimidazole-1-carboxamide hydrochloride 2,3-Dihydro-N-[(3-endo)-8-methyl-8-azabicyclo[3.2.1]oct-3-yl]-3-(1-methylethyl)-2-oxo-1H-benzimidazole-1-carboxamide Hydrochloride (1:1) hydrate | [Molecular Formula]
C19H26N4O2.HCl | [MDL Number]
MFCD00903899 | [MOL File]
134296-40-5.mol |
Hazard Information | Back Directory | [Uses]
BIMU 8 is a potent full agonist of SR-4. | [Biological Activity]
bimu 8 is an agonist of 5-ht4 with ki values of 33.9 ± 8.0 nm and 12.6 ± 0.9 nm in guinea pig ileum and striatum, respectively [1, 2].as a member of the seven transmembrane spanning g-protein-coupled family of receptors, the 5-ht4 receptor is positively coupled to adenylate cyclase. it exists in two isoforms (5-ht4s and 5-ht4l). these two isoforms differ in the sequence and length of their carboxy termini [3].bimu 8 significantly decreased the k+ current in colliculi neurons. this suggested a 5-ht4 receptor-mediated effect [4]. in neurons, bimu 8 at concentrations ranging from 0.003-0.1 μm increased epsp amplitude but did not change membrane potential. the epsp potentiation induced by bimu 8 was blocked by tropisetron (1 μm), a 5-ht3/5-ht4 receptor antagonist. but ondansetron (1 μm), a 5-ht3 receptor antagonist did not blocked the epsp potentiation induced by bimu 8 [5].in the hot-plate test, bimu 8 injected i.p. in the range of doses of 20-30 mg/kg significantly induced an increase in the pain threshold. 15 min after administration, the antinociceptive effect reached a maximum and hence diminished. this effect disappeared within 45 min. choline uptake blocker hc-3 (1 μg per mouse i.c.v.), antimuscarinic drug atropine (5 mg/kg i.p.), 5-ht4 antagonists sdz 205-557 (10 mg/kg i.p.) and gr 125487 (20 mg/kg i.p.) completely prevented the antinociception of bimu 8 [1]. | [storage]
Store at -20°C | [References]
[1]. ghelardini c, galeotti n, casamenti f, et al. central cholinergic antinociception induced by 5ht4 agonists: bimu 1 and bimu 8. life sciences, 1996, 58(25): 2297-2309. [2]. yoshikawa t, yoshida n, mine y, et al. affinity of mosapride citrate, a new gastroprokinetic agent, for 5-ht4 receptors in guinea pig ileum. the japanese journal of pharmacology, 1998, 77(1): 53-59. [3]. hegde ss, eglen rm. peripheral 5-ht4 receptors. the faseb journal, 1996, 10(12): 1398-1407. [4]. fagni l, dumuis a, sebben m, et al. the 5-ht4 receptor subtype inhibits k+ current in colliculi neurones via activation of a cyclic amp-dependent protein kinase. british journal of pharmacology, 1992, 105(4): 973-979. [5]. pan h, galligan jj. 5-ht1a and 5-ht4 receptors mediate inhibition and facilitation of fast synaptic transmission in enteric neurons. american journal of physiology-gastrointestinal and liver physiology, 1994, 266(2): g230-g238. |
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