Hydrazones of 2-aryl-quinoline-4-carboxylic acid hydrazides: Synthesis and preliminary evaluation as antimicrobial agents
摘要:
A new series of 2-arylquinoline-4-carboxylic acid hydrazide-hydrazones was synthesized using an appropriate synthetic route. All the target compounds were evaluated for their in vitro antimicrobial activity against Staphylococcus aureus as an example for Gram-positive bacteria, Escherichia coli as an example for Gram-negative bacteria, and Candida albicans as a representative of fungi. The minimum inhibitory concentration (MIC) was determined for test compounds as well as for reference standards. Among the compounds tested, compounds having nitro substituents at the arylidene moiety showed the most potent antifungal as well as antibacterial activities against E coli. Compound 23 displayed an antifungal activity comparable to that of nystatin. However, none of the compounds demonstrated any antibacterial activity against S. aureus. Hydrophobicity of the target compounds correlated weakly with their antibacterial and antifungal activities. The most potent compounds namely, 7, 18, 19, 22, and 23 were assessed for hemolytic toxicity and found to be non-hemolytic up to a concentration of 100 mu g/mL. In addition, the most potent compound (23) was evaluated for in vitro cytotoxic activity against various cancer cell lines. This compound was found to display no cytotoxic activity but rather it induces the proliferation rate of Hep-G2 cells. (c) 2006 Elsevier Ltd. All rights reserved.
Quinoline-4-methyl esters as human nonpancreatic secretory phospholipase A2 inhibitors
作者:Yiran Wu、Zheng Chen、Ying Liu、Lanlan Yu、Lu Zhou、Suijia Yang、Luhua Lai
DOI:10.1016/j.bmc.2011.04.039
日期:2011.6
A series of novel fused heterocycle methyl esters were designed and synthesized as human nonpancreatic secretoryphospholipaseA2 (hnps-PLA2) competitive inhibitors. Among the 22 synthesized compounds, 17 quinoline-4-methyl esters displayed hnps-PLA2 inhibition activity in the in vitro bioassay. The IC50 value for the best compound 3o was 1.5 μM. The structure-inhibition–activity relationships of the
well as normal cells. OBJECTIVES In the light of this fact, the searching of new compounds with selective behavior only towards cancer cells is critically important. Previously, we have identified several series of compounds as the potential inhibitors of these families. METHODS Herein, we investigate quinolones and quinolines for their anti-cancer activity against breast cancer cells (MCF-7), bone marrow
Investigation of quinoline-4-carboxylic acid as a highly potent scaffold for the development of alkaline phosphatase inhibitors: synthesis, SAR analysis and molecular modelling studies
作者:Imtiaz Khan、Syed Jawad Ali Shah、Syeda Abida Ejaz、Aliya Ibrar、Shahid Hameed、Joanna Lecka、Jose Luis Millán、Jean Sévigny、Jamshed Iqbal
DOI:10.1039/c5ra12455g
日期:——
identified as a potentinhibitor of h-TNAP with an IC50 value of 22 ± 1 nM, whereas, 3e emerged as a lead candidate against h-IAP and h-PLAP with IC50 values of 34 ± 10 and 82 ± 10 nM, respectively. 3a was a potentinhibitor of human germ cell alkaline phosphatase (h-GCAP) with an IC50 value of 150 ± 70 nM. The putative binding sites of the most potentinhibitors were inferred from molecular docking simulations
Quinolinic Carboxylic Acid Derivatives as Potential Multi-target Compounds for Neurodegeneration: Monoamine Oxidase and Cholinesterase Inhibition
作者:Nehal A. Khan、Imtiaz Khan、Syed M.A. Abid、Sumera Zaib、Aliya Ibrar、Hina Andleeb、Shahid Hameed、Jamshed Iqbal
DOI:10.2174/1573406413666170525125231
日期:2018.1.11
silico studies of the most potent inhibitors were performed to identify the probable binding modes in the active site of the monoamineoxidase enzymes. Moreover, molecular properties were calculated to evaluate the druglikeness of the compounds. RESULTS The biological evaluation results revealed that the tested compounds were highly potent against monoamineoxidase (A & B), 3c targeted both the isoforms