Displaying publications 1 - 20 of 46 in total

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  1. Synthesis and evaluation of antimycobacterial activity of new benzimidazole aminoesters
    Yoon YK, Ali MA, Wei AC, Choon TS, Ismail R
    Eur J Med Chem, 2015 Mar 26;93:614-24.
    PMID: 24996257 DOI: 10.1016/j.ejmech.2013.06.025
    A total of 51 novel benzimidazoles were synthesized by a 4-step reaction starting from basic compound 4-fluoro-3-nitrobenzoic acid under relatively mild reaction conditions. The structure of the novel benzimidazoles was confirmed by mass spectra as well as (1)H NMR spectroscopic data. Out of the 51 novel synthesized compounds, 42 of them were screened for their antimycobacterial activity against Mycobacterium tuberculosis H37Rv strain using BacTiter-Glo™ Microbial Cell Viability (BTG) method. Results of activity screened using Alamar Blue method was also provided for comparison purposes. Two of the novel benzimidazoles synthesized showed moderately good activity with IC50 of less than 15 μM. Compound 5g, ethyl 2-(4-(trifluoromethyl)phenyl)-1-(2-morpholinoethyl)-1H-benzo[d]imidazole-5-carboxylate, was found to be the most active with IC50 of 11.52 μM.
    Matched MeSH terms: Mycobacterium tuberculosis/drug effects*
  2. Sequential synthesis of amino-1,4-naphthoquinone-appended triazoles and triazole-chromene hybrids and their antimycobacterial evaluation
    Devi Bala B, Muthusaravanan S, Choon TS, Ashraf Ali M, Perumal S
    Eur J Med Chem, 2014 Oct 6;85:737-46.
    PMID: 25129868 DOI: 10.1016/j.ejmech.2014.08.009
    A general method for the synthesis of a library of hitherto unreported amino-1,4-naphthoquinone-appended triazoles was accomplished via a sequential three-component reaction of substituted N-propargylaminonaphthoquinones with variously substituted alkyl bromides/2-bromonaphthalene-1,4-dione and sodium azide in the presence of Et3N/CuI in water. Aminonaphthoquinone-appended iminochromene-triazole hybrid heterocycles were also synthesized from the amino-1,4-naphthoquinone-appended-1,2,3-triazolylacetonitriles. All the triazole hybrids were screened for their in vitro activity against Mycobacterium tuberculosis H37Rv (MTB). Among the triazoles, 2-(((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)(4-(trifluoromethyl)phenyl)amino)naphthalene-1,4-dione (7d) emerged as the most active one with IC50 = 1.87 μM, being more potent than the anti-TB drugs, cycloserine (6 times), pyrimethamine (20 times) and equipotent as the drug ethambutol (IC50 
    Matched MeSH terms: Mycobacterium tuberculosis/drug effects
  3. Antituberculosis potential of some ethnobotanically selected Malaysian plants
    Mohamad S, Zin NM, Wahab HA, Ibrahim P, Sulaiman SF, Zahariluddin AS, et al.
    J Ethnopharmacol, 2011 Feb 16;133(3):1021-6.
    PMID: 21094237 DOI: 10.1016/j.jep.2010.11.037
    Many local plants are used in Malaysian traditional medicine to treat respiratory diseases including symptoms of tuberculosis. The aim of the study was to screen 78 plant extracts from 70 Malaysian plant species used in traditional medicine to treat respiratory diseases including symptoms of tuberculosis for activity against Mycobacterium tuberculosis H37Rv using a colorimetric microplate-based assay.
    Matched MeSH terms: Mycobacterium tuberculosis/drug effects*
  4. Discovery of novel methanone derivatives acting as antimycobacterial agents
    Ali MA, Bastian S, Ismail R, Choon TS, Ali S, Aubry A, et al.
    J Enzyme Inhib Med Chem, 2011 Dec;26(6):890-4.
    PMID: 21395486 DOI: 10.3109/14756366.2011.559945
    A series of pyrazoline derivatives were synthesized and in vitro activity against Mycobacterium tuberculosis H37Rv was carried out. Among the synthesized compounds, compounds (4d) and (4f) 4-aminophenyl-3-(3,4-dimethoxyphenyl)-6,7-dimethoxy-2,3,3a,4-tetrahydroindeno[1,2-c]pyrazol-2-ylmethanone and 4-aminophenyl-6,7-dimethoxy-3-phenyl-2,3,3a,4-tetrahydroindeno[1,2-c]pyrazol-2-ylmethanone were found to be the most active agent against M. tuberculosis H37Rv with a minimum inhibitory concentration of 10 μg/mL.
    Matched MeSH terms: Mycobacterium tuberculosis/drug effects*
  5. Antioxidant, anti-TB activities, phenolic and amide contents of standardised extracts of Piper sarmentosum Roxb
    Hussain K, Ismail Z, Sadikun A, Ibrahim P
    Nat Prod Res, 2009;23(3):238-49.
    PMID: 19235024 DOI: 10.1080/14786410801987597
    Ethanol and aqueous extracts of the different parts of Piper sarmentosum were analysed by HPLC for marker compounds to standardise these extracts. The standardised extracts were investigated for antioxidant activity (beta-carotene linoleate model and DPPH model), anti-TB activity (microplate tetrazolium assay), and estimation of total phenolic and amide contents. The extracts of the different parts exhibited different antioxidant activity, phenolic and amide contents (p < 0.01). The ethanol extracts exhibited better antioxidant activity as compared to the aqueous extracts. The leaf ethanol extract was further investigated for dose response relationship and its EC(50) was found to be 38 microg mL(-1). All the extracts have exhibited anti-TB activity with MIC/MBC 12.5 microg mL(-1). The leaf methanol extract was fractionated and the ethyl acetate fraction exhibited anti-TB activity with MIC/MBC 3.12 microg mL(-1) while MIC/MBC of isoniazid (INH) was found to be 0.5 microg mL(-1). A positive correlation was found between antioxidant activity and total polyphenols, flavonoids and amides, in the beta-carotene linoleate model (p = 0.05) and in the DPPH model (p = 0.01). The analytical method was found to have linearity >0.9922, coefficient of variance <5% and accuracy 95.5 +/- 5 to 96.9 +/- 5. This plant possesses promising antioxidant as well as anti-TB properties.
    Matched MeSH terms: Mycobacterium tuberculosis/drug effects*
  6. Current prospects of synthetic curcumin analogs and chalcone derivatives against mycobacterium tuberculosis
    Bukhari SN, Franzblau SG, Jantan I, Jasamai M
    Med Chem, 2013 Nov;9(7):897-903.
    PMID: 23305394
    Tuberculosis, caused by Mycobacterium tuberculosis, is amongst the foremost infectious diseases. Treatment of tuberculosis is a complex process due to various factors including a patient's inability to persevere with a combined treatment regimen, the difficulty in eradicating the infection in immune-suppressed patients, and multidrug resistance (MDR). Extensive research circumscribing molecules to counteract this disease has led to the identification of many inhibitory small molecules. Among these are chalcone derivatives along with curcumin analogs. In this review article, we summarize the reported literature regarding anti tubercular activity of chalcone derivatives and synthetic curcumin analogs. Our goal is to provide an analysis of research to date in order to facilitate the synthesis of superior antitubercular chalcone derivatives and curcumin analogs.
    Matched MeSH terms: Mycobacterium tuberculosis/drug effects*
  7. Fulltext A study of primary drug resistance in pulmonary tuberculosis in west Malaysia 1984-1987
    Jalleh RD, Kuppusamy I, Soshila R, Aziah AM, Faridza MY
    Med J Malaysia, 1993 Jun;48(2):113-6.
    PMID: 8350784
    Eight hundred and fifty-six strains of Mycobacterium tuberculosis from previously untreated patients with pulmonary tuberculosis from various states in West Malaysia were studied during the period 1984 to 1987. All the strains were tested for in vitro susceptibility to the anti-tuberculosis drugs isoniazid (INH), streptomycin (SM), rifampicin (RMP) and ethambutol (ETB). One hundred and twenty-one of the isolates (14.18%) were resistant to 1 drug while 17 (1.97%) were resistant to 2 drugs. No strain was found to be resistant to more than 2 drugs. The prevalence of primary resistance to INH was 4.20%, SM was 7.59%, RMP was 0.95% and ETB was 1.44%. In 1.86% of isolates, resistance was noted to both INH and SM, while 0.11% were resistant to both RMP and ETB. There was no significant difference in distribution of resistant bacilli between the sexes (p > 0.01).
    Matched MeSH terms: Mycobacterium tuberculosis/drug effects*
  8. Fulltext Drug resistant Mycobacterium tuberculosis
    Lim VK
    Med J Malaysia, 1993 Jun;48(2):97-8.
    PMID: 8350810
    Matched MeSH terms: Mycobacterium tuberculosis/drug effects*
  9. Susceptibility of Mycobacterium tuberculosis to isoniazid and its derivative, 1-isonicotinyl-2-nonanoyl hydrazine: investigation at cellular level
    Mohamad S, Ibrahim P, Sadikun A
    Tuberculosis (Edinb), 2004;84(1-2):56-62.
    PMID: 14670346
    In this study, the susceptibility of Mycobacterium tuberculosis to isoniazid (INH) was compared with its derivative, 1-isonicotinyl-2-nonanoyl hydrazine (INH-C9), prepared synthetically. The minimum inhibitory concentration (MIC) of the drugs was determined using the 1% proportion method. INH-C9 was found to lower the MIC of INH from 0.05 to 0.025 microg/ml. Further studies on the effects of INH and INH-C9 on M. tuberculosis were assessed by exposing the cells to the above at the MIC level. M. tuberculosis cells grown on Middlebrook 7H10 agar were harvested at different stages of their growth cycle (initial stage, 24 and 72 h), exposed to the MICs of INH and INH-C9, and stained with acid-fast staining. The observations were made for a week. The cellular morphologies and staining characteristics were examined using a Brightfield microscope. The result indicated cells only at the initial stage of growth were most susceptible to the drugs resulting in the loss of acid-fastness and intact cellular morphology in the majority of cells.
    Matched MeSH terms: Mycobacterium tuberculosis/drug effects*
  10. Antimycobacterial evaluation of novel hybrid arylidene thiazolidine-2,4-diones
    Ponnuchamy S, Kanchithalaivan S, Ranjith Kumar R, Ali MA, Choon TS
    Bioorg Med Chem Lett, 2014 Feb 15;24(4):1089-93.
    PMID: 24472146 DOI: 10.1016/j.bmcl.2014.01.007
    A series of novel hybrid heterocycles comprising arylidene thiazolidine-2,4-dione and 1-cyclopropyl-2-(2-fluorophenyl)ethanone were synthesized. These compounds were evaluated for their antimycobacterial activity against Mycobacterium tuberculosis H37Rv in High Throughput Screen. Most of the hybrid arylidene thiazolidine-2,4-diones displayed moderate to good activity with MIC of less than 50 μM. Compound 1m exhibited maximum potency being 5.87 fold more active at EC50 and 6.26 fold more active at EC90 than the standard drug pyrimethamine.
    Matched MeSH terms: Mycobacterium tuberculosis/drug effects*
  11. An overview of the phenotypic and genotypic characteristics of multidrug-resistant Mycobacterium tuberculosis isolates from four Asian countries
    Ang CF, Ong CS, Rukmana A, Pham Thi KL, Yap SF, Ngeow YF, et al.
    J Med Microbiol, 2008 Aug;57(Pt 8):1039-1040.
    PMID: 18628510 DOI: 10.1099/jmm.0.47850-0
    Matched MeSH terms: Mycobacterium tuberculosis/drug effects
  12. Multi-drug resistant Mycobacterium tuberculosis & oxidative stress complexity: Emerging need for novel drug delivery approaches
    Dua K, Rapalli VK, Shukla SD, Singhvi G, Shastri MD, Chellappan DK, et al.
    Biomed Pharmacother, 2018 Nov;107:1218-1229.
    PMID: 30257336 DOI: 10.1016/j.biopha.2018.08.101
    Tuberculosis (caused by Mycobacterium tuberculosis, Mtb) treatment involves multiple drug regimens for a prolonged period. However, the therapeutic benefit is often limited by poor patient compliance, subsequently leading to treatment failure and development of antibiotic resistance. Notably, oxidative stress is a crucial underlying factor that adversely influences the various treatment regimens in tuberculosis. Little information is available with advanced drug delivery systems that could be effectively utilized, in particular, for targeting the oxidative stress in tuberculosis. Thus, this presents an opportunity to review the utility of various available, controlled-release drug delivery systems (e.g., microspheres, liposomes, niosomes, solid lipid nanoparticles, dendrimers) that could be beneficial in tuberculosis treatments. This will help the biological and formulation scientists to pave a new path in formulating a treatment regimen for multi-drug resistant Mtb.
    Matched MeSH terms: Mycobacterium tuberculosis/drug effects*
  13. Fulltext Phenolic Compounds as Promising Drug Candidates in Tuberculosis Therapy
    Mazlun MH, Sabran SF, Mohamed M, Abu Bakar MF, Abdullah Z
    Molecules, 2019 Jul 04;24(13).
    PMID: 31277371 DOI: 10.3390/molecules24132449
    Tuberculosis (TB), caused by Mycobacterium tuberculosis (MTB) remains one of the deadliest, infectious diseases worldwide. The detrimental effects caused by the existing anti-TB drugs to TB patients and the emergence of resistance strains of M. tuberculosis has driven efforts from natural products researchers around the globe in discovering novel anti-TB drugs that are more efficacious and with less side effects. There were eleven main review publications that focused on natural products with anti-TB potentials. However, none of them specifically emphasized antimycobacterial phenolic compounds. Thus, the current review's main objective is to highlight and summarize phenolic compounds found active against mycobacteria from 2000 to 2017. Based on the past studies in the electronic databases, the present review also focuses on several test organisms used in TB researches and their different distinct properties, a few types of in vitro TB bioassay and comparison between their strengths and drawbacks, different methods of extraction, fractionation and isolation, ways of characterizing and identifying isolated compounds and the mechanism of actions of anti-TB phenolic compounds as reported in the literature.
    Matched MeSH terms: Mycobacterium tuberculosis/drug effects
  14. Fulltext Synthesis of 2,4-Diaminopyrimidine Core-Based Derivatives and Biological Evaluation of Their Anti-Tubercular Activities
    Ouyang Y, Yang H, Zhang P, Wang Y, Kaur S, Zhu X, et al.
    Molecules, 2017 Sep 22;22(10).
    PMID: 28937657 DOI: 10.3390/molecules22101592
    Tuberculosis (TB) is a chronic, potentially fatal disease caused by Mycobacterium tuberculosis (Mtb). The dihyrofolate reductase in Mtb (mt-DHFR) is believed to be an important drug target in anti-TB drug development. This enzyme contains a glycerol (GOL) binding site, which is assumed to be a useful site to improve the selectivity towards human dihyrofolate reductase (h-DHFR). There have been previous attempts to design drugs targeting the GOL binding site, but the designed compounds contain a hydrophilic group, which may prevent the compounds from crossing the cell wall of Mtb to function at the whole cell level. In the current study, we designed and synthesized a series of mt-DHFR inhibitors that contain a 2,4-diaminopyrimidine core with side chains to occupy the glycerol binding site with proper hydrophilicity for cell entry, and tested their anti-tubercular activity against Mtb H37Ra. Among them, compound 16l showed a good anti-TB activity (MIC = 6.25 μg/mL) with a significant selectivity against vero cells. In the molecular simulations performed to understand the binding poses of the compounds, it was noticed that only side chains of a certain size can occupy the glycerol binding site. In summary, the novel synthesized compounds with appropriate side chains, hydrophobicity and selectivity could be important lead compounds for future optimization towards the development of future anti-TB drugs that can be used as monotherapy or in combination with other anti-TB drugs or antibiotics. These compounds can also provide much information for further studies on mt-DHFR. However, the enzyme target of the compounds still needs to be confirmed by pure mt-DHFR binding assays.
    Matched MeSH terms: Mycobacterium tuberculosis/drug effects
  15. Fulltext Antituberculosis activity, phytochemical identification of Costus speciosus (J. Koenig) Sm., Cymbopogon citratus (DC. Ex Nees) Stapf., and Tabernaemontana coronaria (L.) Willd. and their effects on the growth kinetics and cellular integrity of Mycobacterium tuberculosis H37Rv
    Mohamad S, Ismail NN, Parumasivam T, Ibrahim P, Osman H, A Wahab H
    BMC Complement Altern Med, 2018 Jan 08;18(1):5.
    PMID: 29310671 DOI: 10.1186/s12906-017-2077-5
    BACKGROUND: Costus speciosus, Cymbopogon citratus, and Tabernaemontana coronaria are herbal plants traditionally used as remedies for symptoms of tuberculosis (TB) including cough. The aims of the present study were to evaluate the in vitro anti-TB activity of different solvent partitions of these plants, to identify the phytochemical compounds, and to assess the effects of the most active partitions on the growth kinetics and cellular integrity of the tubercle organism.

    METHODS: The in vitro anti-TB activity of different solvent partitions of the plant materials was determined against M. tuberculosis H37Rv using a tetrazolium colorimetric microdilution assay. The phytochemical compounds in the most active partition of each plant were identified using gas chromatography-mass spectrometry (GC-MS) analysis. The effects of these partitions on the growth kinetics of the mycobacteria were evaluated over 7-day treatment period in a batch culture system. Their effects on the mycobacterial cellular integrity were observed under a scanning electron microscope (SEM).

    RESULTS: The respective n-hexane partition of C. speciosus, C. citratus, and T. coronaria exhibited the highest anti-TB activity with minimum inhibitory concentrations (MICs) of 100-200 μg/mL and minimum bactericidal concentration (MBC) of 200 μg/mL. GC-MS phytochemical analysis of these active partitions revealed that majority of the identified compounds belonged to lipophilic fatty acid groups. The active partitions of C. speciosus and T. coronaria exhibited high cidal activity in relation to time, killing more than 99% of the cell population. SEM observations showed that these active plant partitions caused multiple structural changes indicating massive cellular damages.

    CONCLUSIONS: The n-hexane partition of the plant materials exhibited promising in vitro anti-TB activity against M. tuberculosis H37Rv. Their anti-TB activity was supported by their destructive effects on the integrity of the mycobacterial cellular structure.

    Matched MeSH terms: Mycobacterium tuberculosis/drug effects*
  16. Fulltext Resistance patterns, prevalence, and predictors of fluoroquinolones resistance in multidrug resistant tuberculosis patients
    Ahmad N, Javaid A, Sulaiman SA, Ming LC, Ahmad I, Khan AH
    Braz J Infect Dis, 2016;20(1):41-7.
    PMID: 26626164 DOI: 10.1016/j.bjid.2015.09.011
    BACKGROUND: Fluoroquinolones are the backbone of multidrug resistant tuberculosis treatment regimens. Despite the high burden of multidrug resistant tuberculosis in the country, little is known about drug resistance patterns, prevalence, and predictors of fluoroquinolones resistance among multidrug resistant tuberculosis patients from Pakistan.

    OBJECTIVE: To evaluate drug resistance patterns, prevalence, and predictors of fluoroquinolones resistance in multidrug resistant tuberculosis patients.

    METHODS: This was a cross-sectional study conducted at a programmatic management unit of drug resistant tuberculosis, Lady Reading Hospital Peshawar, Pakistan. Two hundred and forty-three newly diagnosed multidrug resistant tuberculosis patients consecutively enrolled for treatment at study site from January 1, 2012 to July 28, 2013 were included in the study. A standardized data collection form was used to collect patients' socio-demographic, microbiological, and clinical data. SPSS 16 was used for data analysis.

    RESULTS: High degree of drug resistance (median 5 drugs, range 2-8) was observed. High proportion of patients was resistant to all five first-line anti-tuberculosis drugs (62.6%), and more than half were resistant to second line drugs (55.1%). The majority of the patients were ofloxacin resistant (52.7%). Upon multivariate analysis previous tuberculosis treatment at private (OR=1.953, p=0.034) and public private mix (OR=2.824, p=0.046) sectors were predictors of ofloxacin resistance.

    CONCLUSION: The high degree of drug resistance observed, particularly to fluoroquinolones, is alarming. We recommend the adoption of more restrictive policies to control non-prescription sale of fluoroquinolones, its rational use by physicians, and training doctors in both private and public-private mix sectors to prevent further increase in fluoroquinolones resistant Mycobacterium tuberculosis strains.

    Matched MeSH terms: Mycobacterium tuberculosis/drug effects*
  17. Antimycobacterial activity of selected medicinal plants traditionally used in Sudan to treat infectious diseases
    Abuzeid N, Kalsum S, Koshy RJ, Larsson M, Glader M, Andersson H, et al.
    J Ethnopharmacol, 2014 Nov 18;157:134-9.
    PMID: 25261689 DOI: 10.1016/j.jep.2014.09.020
    The emergence of multidrug-resistant strains of Mycobacterium tuberculosis underscores the need for continuous development of new and efficient methods to determine the susceptibility of isolates of Mycobacterium tuberculosis in the search for novel antimycobacterial agents. Natural products constitute an important source of new drugs, and design and implementation of antimycobacterial susceptibility testing methods are necessary to evaluate the different extracts and compounds. In this study we have explored the antimycobacterial properties of 50 ethanolic extracts from different parts of 46 selected medicinal plants traditionally used in Sudan to treat infectious diseases.
    Matched MeSH terms: Mycobacterium tuberculosis/drug effects*
  18. Fulltext Antituberculosis: synthesis and antimycobacterial activity of novel benzimidazole derivatives
    Keng Yoon Y, Ashraf Ali M, Choon TS, Ismail R, Chee Wei A, Suresh Kumar R, et al.
    Biomed Res Int, 2013;2013:926309.
    PMID: 24381946 DOI: 10.1155/2013/926309
    A total of seven novel benzimidazoles were synthesized by a 4-step reaction starting from 4-fluoro-3-nitrobenzoic acid under relatively mild reaction conditions. The synthesized compounds were screened for their antimycobacterial activity against M. tuberculosis H₃₇Rv (MTB-H₃₇Rv) and INH-resistant M. tuberculosis (INHR-MTB) strains using agar dilution method. Three of them displayed good activity with MIC of less than 0.2 μM. Compound ethyl 1-(2-(4-(4-(ethoxycarbonyl)-2-aminophenyl)piperazin-1-yl)ethyl)-2-(4-(5-(4-fluorophenyl)pyridin-3-ylphenyl-1H-benzo[d]imidazole-5-carboxylate (5 g) was found to be the most active with MIC of 0.112 μM against MTB-H₃₇Rv and 6.12 μM against INHR-MTB, respectively.
    Matched MeSH terms: Mycobacterium tuberculosis/drug effects*
  19. Antimycobacterial activity: synthesis of novel 3-(substituted phenyl)-6,7-dimethoxy-3a,4-dihydro-3H-indeno[1,2-c]isoxazole analogues
    Ali MA, Ismail R, Choon TS, Pandian S, Hassan Ansari MZ
    J Enzyme Inhib Med Chem, 2011 Aug;26(4):598-602.
    PMID: 21714764 DOI: 10.3109/14756366.2010.529805
    In this study, a series of novel 3-(substituted phenyl)-6,7-dimethoxy-3a,4-dihydro-3H-indeno[1,2-c]isoxazole analogues were synthesized and evaluated for antimycobacterial activity against Mycobacterium tuberculosis (MTB) H(37)Rv and isoniazid resistant M. tuberculosis (INHR-MTB). All the newly synthesized compounds were showing moderate to high inhibitory activities. The compound 6,7-dimethoxy-3-(4-chloro phenyl)-4H-indeno[1,2-c]isoxazole (4b) was found to be the most promising compound, active against MTB H(37)Rv and INHR-MTB with minimum inhibitory concentrations of 0.22 and 0.34 μM.
    Matched MeSH terms: Mycobacterium tuberculosis/drug effects*
  20. Antimycobacterial activity: a facile three-component [3+2]-cycloaddition for the regioselective synthesis of highly functionalised dispiropyrrolidines
    Wei AC, Ali MA, Yoon YK, Ismail R, Choon TS, Kumar RS, et al.
    Bioorg Med Chem Lett, 2012 Aug 1;22(15):4930-3.
    PMID: 22749825 DOI: 10.1016/j.bmcl.2012.06.047
    A series of twelve dispiropyrrolidines were synthesized using [3+2]-cycloaddition reactions. The synthesized compounds were screened for their antimycobacterial activity against M. tuberculosis H(37)Rv and INH resistant M. tuberculosis strains using agar dilution method, four of them showed good activity with MIC of less than 1 μM. Compound 4'-[5-(4-fluorophenyl)pyridin-3-yl]-1'-methyldispiro[indan-2,2' pyrrolidine-3',2″-indan]-1,3,1″-trione (4b) was found to be the most active with MIC of 0.1215 and 5.121 μM, respectively.
    Matched MeSH terms: Mycobacterium tuberculosis/drug effects
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