SYNTHESIS, BIOLOGICAL EVALUATION, AND STRUCTURAL STUDIES OF 3-PHENYL[ 1,2,4]OXADIAZOLE-5-CARBOXYLIC ACID BENZO[1,3]DIOXOL 5-YLMETHYLENE-HYDRAZIDE
作者:J. M. Santos-Filho、J. G. de Lima、L. F. C. C. Leite、Ε. A. Ximenes、J. Β. P. da Silva、P. C. Lima、l. R. Pitta
DOI:10.1515/hc.2005.11.1.29
日期:2005.1
A series of 1,2,4-oxadiazole combined with carbohydrazides residues, designed as possible bioactive compounds, was obtained in an attempt to analyse the effects of this molecular hybridization on the biological properties of the resulting compounds. They were tested for their antimicrobial and antimalarial activity. Ab initio calculations were performed in order to strengthen experimental NMR structural
Optimization of anti-Trypanosoma cruzi oxadiazoles leads to identification of compounds with efficacy in infected mice
作者:José Maurício dos Santos Filho、Diogo Rodrigo M. Moreira、Carlos Alberto de Simone、Rafaela Salgado Ferreira、James H. McKerrow、Cássio Santana Meira、Elisalva Teixeira Guimarães、Milena Botelho Pereira Soares
DOI:10.1016/j.bmc.2012.08.047
日期:2012.11
oxadiazoles have anti-Trypanosomacruzi activity at micromolar concentrations. These compounds are easy to synthesize and show a number of clear and interpretable structure–activity relationships (SAR), features that make them attractive to pursue potency enhancement. We present here the structuraldesign, synthesis, and anti-T. cruzievaluation of new oxadiazoles denoted 5a–h and 6a–h. The design of these
Synthesis, characterization, and anti-inflammatory evaluation of 1,2,4-oxadiazoles combined with thiosemicarbazide and 1,3,4-oxadiazole moieties
作者:José M. dos Santos Filho、José G. de Lima、Lúcia F. C. C. Leite
DOI:10.1002/jhet.133
日期:2009.7
The reaction of 1,2,4-oxadiazole carbohydrazides with phenyl isothiocyanate led to an unexpected ring cyclisation of the thiosemicarbazide derivatives , giving compounds as side products. These two new series were preliminarily evaluated for their anti-inflammatory activity, using the carrageenin induced edema protocol. J. Heterocyclic Chem., (2009).
Synthesis and analgesic profile of novel N-containing heterocycle derivatives: arylidene 3-phenyl-1,2,4-oxadiazole-5-carbohydrazide
作者:Lúcia Fernanda C.C. Leite、Mozart N. Ramos、João Bosco P. da Silva、Ana L.P. Miranda、Carlos A.M. Fraga、Eliezer J. Barreiro
DOI:10.1016/s0014-827x(99)00094-4
日期:1999.11
This paper describes recent results of a research program aimed at the synthesis and pharmacological evaluation of new heterocyclic N-acylhydrazone (NAH) compounds, belonging to the arylidene (3-phenyl)-1,2,4-oxadiazolyl-5-carboxyhydrazide (8a-p) series. These compounds were structurally planned by applying the molecular hybridization strategy on previously described arylidene 1-phenylpyrazole-4-carbohydrazide (5) derivatives, considered as lead-compounds, which present potent analgesic properties. The analgesic profile of the title compounds 8a-p, evaluated in the model of abdominal constrictions induced by acetic acid, showed that the 4-methoxybenzylidene derivatives 8c and 8k were the most active ones, exhibiting a relative analgesic activity comparable with that of dipyrone 1 used as standard. (C) 1999 Elsevier Science S.A. All rights reserved.