Synthesis and in vitro anti Mycobacterium tuberculosis activity of a series of phthalimide derivatives
作者:Jean L. Santos、Paulo R. Yamasaki、Chung Man Chin、Célio H. Takashi、Fernando R. Pavan、Clarice Q.F. Leite
DOI:10.1016/j.bmc.2009.04.042
日期:2009.6
New phthalimide derivatives were easily prepared through condensation of phthalic anhydride and selected amines with variable yields (70–90%). All compounds (3a–l) were evaluated against Mycobacterium tuberculosis H37Rv using Alamar Blue susceptibility. The compounds 3c, 3i, and 3l have the minimum inhibitory concentrations (MICs) of 3.9, 7.8, and 5.0 μg/mL, respectively, and could be considered new
Synthesis and evaluation of novel dapsone–thalidomide hybrids for the treatment of type 2 leprosy reactions
作者:Paulo Renato Yamasaki、Dejair Caetano do Nascimento、Rafael Consolin Chelucci、Andréa de Faria Fernandes Belone、Patrícia Sammarco Rosa、Suzana Madeira Diório、Thais Regina Ferreira de Melo、Karina Pereira Barbieri、Marisa Campos Polési Placeres、Iracilda Zepone Carlos、Man Chin Chung、Jean Leandro dos Santos
DOI:10.1016/j.bmcl.2014.05.017
日期:2014.7
We synthesized a series of novel dapsone-thalidomide hybrids (3a-i) by molecular hybridization and evaluated their potential for the treatment of type 2 leprosy reactions. All of the compounds had analgesic properties. Compounds 3c and 3h were the most active antinociceptive compounds and reduced acetic acid-induced abdominal constrictions by 49.8% and 39.1%, respectively. The hybrid compounds also reduced tumor necrosis factor-alpha levels in lipopolysaccharide-stimulated L929 cells. Compound 3i was the most active compound; at concentrations of 15.62 and 125 mu M, compound 3i decreased tumor necrosis factor-alpha levels by 86.33% and 87.80%, respectively. In nude mice infected with Mycobacterium leprae in vivo, compound 3i did not reduce the number of bacilli compared with controls. Compound 3i did not have mutagenic effects in Salmonella typhimurium strains TA100 and TA102, with or without metabolic activation (S9 mixture). Our results indicate that compound 3i is a novel lead compound for the treatment of type 2 leprosy reactions. (C) 2014 Elsevier Ltd. All rights reserved.