Novel carbazole-triazole conjugates as DNA-targeting membrane active potentiators against clinical isolated fungi
摘要:
A series of carbazole-triazole conjugates were designed, synthesized and characterized by IR, NMR, and HRMS spectra. Biological assay showed that most of the synthesized compounds exhibited moderate and even strong antifungal activities, especially 3,6-dibromocarbazolyl triazole 5d displayed excellent inhibitory efficacy against most of the tested fungal strains (MIC = 2-32 mu g/mL) and effectively fungicidal ability towards C albicans, C tropicals and C. parapsilosis ATCC 22019 (MFC = 4-8 mu g/mL). Its combination use with fluconazole could enhance the antifungal efficacy, and compound 5d also did not obviously trigger the development of resistance in C. albicans even after 10 passages. Preliminary mechanism study revealed that the active molecule 5d could depolarize fungal membrane potential and intercalate into DNA to possibly block DNA replication, thus possibly exhibiting its powerful antifungal abilities. Conjugate 5d could interact with HSA, which was constructive for the further design, modification and screening of drug molecules. Docking investigation demonstrated a non-covalent binding of 5d with CYP51 through hydrogen bond and hydrophobicity. These results strongly suggested that compound 5d could act as a potential template for the development of promising antifungal drugs. (C) 2018 Elsevier Masson SAS. All rights reserved.
Synthesis of 1-Triazolyl-4-trimethylsilyl-2-butanol and 1-Triazolyl-5-trimethylsilyl-2-pentanol Derivatives and an Investigation of Their Fungicidal Activities
A new series of azole derivatives of 1-triazolyl-4-trimethylsilyl-2-butanol and 1-triazolyl-5-trimethylsilyl-2-pentanol were synthesized and evaluated for fungicidal activities against rice blast, sheath blight, and powdery mildew on barley. The derivatives of 2,4-difluorobenzene exhibited high antifungal activities when applied by spray, but exhibited no fungicidal activity by submerged application.
Efficient microwave-assisted synthesis of 1-(1H-indol-1-yl)-2-phenyl-3-(1H-1,2,4-triazol-1-yl)propan-2-ols as antifungal agents
作者:Nicolas Lebouvier、Francis Giraud、Typhanie Corbin、Young Min Na、Guillaume Le Baut、Pascal Marchand、Marc Le Borgne
DOI:10.1016/j.tetlet.2006.03.199
日期:2006.9
New conazole antifungals, in the series of triazole alcohols 23a-d and 24a-e incorporating an indole moiety substituted at 5-position by halogens, a cyano or 4-methoxyphenyl group, have been synthesized by ring opening of corresponding oxiranes 15 and 16. These dihalogeno intermediates and their congeneers could be prepared in high yields by Corey-Chaykovsky reaction under microwave irradiation. (c) 2006 Elsevier Ltd. All rights reserved.
Novel carbazole-triazole conjugates as DNA-targeting membrane active potentiators against clinical isolated fungi
作者:Yuan Zhang、Vijai Kumar Reddy Tangadanchu、Rammohan R. Yadav Bheemanaboina、Yu Cheng、Cheng-He Zhou
DOI:10.1016/j.ejmech.2018.06.022
日期:2018.7
A series of carbazole-triazole conjugates were designed, synthesized and characterized by IR, NMR, and HRMS spectra. Biological assay showed that most of the synthesized compounds exhibited moderate and even strong antifungal activities, especially 3,6-dibromocarbazolyl triazole 5d displayed excellent inhibitory efficacy against most of the tested fungal strains (MIC = 2-32 mu g/mL) and effectively fungicidal ability towards C albicans, C tropicals and C. parapsilosis ATCC 22019 (MFC = 4-8 mu g/mL). Its combination use with fluconazole could enhance the antifungal efficacy, and compound 5d also did not obviously trigger the development of resistance in C. albicans even after 10 passages. Preliminary mechanism study revealed that the active molecule 5d could depolarize fungal membrane potential and intercalate into DNA to possibly block DNA replication, thus possibly exhibiting its powerful antifungal abilities. Conjugate 5d could interact with HSA, which was constructive for the further design, modification and screening of drug molecules. Docking investigation demonstrated a non-covalent binding of 5d with CYP51 through hydrogen bond and hydrophobicity. These results strongly suggested that compound 5d could act as a potential template for the development of promising antifungal drugs. (C) 2018 Elsevier Masson SAS. All rights reserved.
Design, synthesis and evaluation of clinafloxacin triazole hybrids as a new type of antibacterial and antifungal agents
A series of clinafloxacin triazolehybrids as a new type of antibacterial and antifungal agents were synthesized for the first time and screened for their antimicrobial efficacy against four Gram-positive bacteria, four Gram-negative bacteria and two fungi by two fold serial dilution technique. The bioactive assay indicated that most of the target compounds displayed broad antimicrobial spectrum and