Spiroindoline urea derivatives, designed to act as NPY Y5 receptorantagonists, were synthesized and their structure–activity relationships were investigated. Of these derivatives, compound 3a showed good Y5 binding affinity with favorable pharmacokinetic properties. Compound 3a significantly inhibited bPP Y5 agonist-induced food intake in rats, and suppressed body weight gain in DIO mice.
Twelve N-aryl derivatives of 4-nitroimidazole, 2-methyl-4-nitroimidazole, 4-nitropyrazole or 3-nitro-1,2,4-triazole have been synthesized either by a degenerated ring transformation reaction of 1,4-dinitroimidazoles with 4-substituted anilines or by a condensation of fluoronitrobenzenes with salts prepared from C-nitro-1H-azoles and 1,8-diazabicyclo[5.4.0]-7-undecene. The Tuberculosis Antimicrobial Acquisition and Coordinating Facility has provided anti-mycobacterial data concerning inhibition activity of 12 compounds. (C) 2004 Elsevier SAS. All rights reserved.
Suwinski, J.; Walczak, K., Polish Journal of Chemistry, 1994, vol. 68, # 4, p. 675 - 682
作者:Suwinski, J.、Walczak, K.
DOI:——
日期:——
Nitroimidazoles XVII. Nucleophilic amination or ring transformation in reactions of 1-aryl-4-nitroimidazoles with 4-amino-1,2,4-triazole or hydroxylamine
1-aryl-4-nitroimidazoles under action of 4-amino-1,2,4-triazole in the presence of MeONa in DMSO undergo a vicarious nucleophilic substitution of hydrogen to give 5-amino-1-aryl-4-nitroimidazoles. If reacted with hydroxylamine in the presence of KOH or MeONa in methanol (but not in DMSO) 1-aryl-4-nitroimidazoles undergo a transformation to 4-acylamino-2-aryl-1-oxy-2H-1,2.3-triazoles but do not yield amination products.
Transformations of the imidazole ring in 1-alkyl and 1-aryl-4-nitroimidazoles following the attack of hydroxylamine or 4-amino-1,2,4-triazole