Medicinal Chemistry Research

, Volume 27, Issue 6, pp 1690–1704 | Cite as

Synthesis of new C-dimethylated chalcones as potent antitubercular agents

  • Rambabu Anandam
  • Surender Singh Jadav
  • Vasu Babu Ala
  • Mohamed Jawed Ahsan
  • Hari Babu Bollikolla
Original Research
  • 57 Downloads

Abstract

A new class of C-dimethylated-chalcones (9aq) were synthesized by using 2-hydroxy-3,5-dimethyl-4,6-dimethoxy acetophenone as a key intermediate. The compounds were screened for anti-tubercular activity against Mycobacterium tuberculosis strain (H37Rv) by Microplate Alamar Blue assay (MABA) method at a concentration of 100–0.8 µg/mL. The chalcones, 9a, 9b, 9c, 9k, 9o, and 9p were found to have higher antitubercular activity than the standard drugs, while the remaining compounds showed moderate activity. The antitubercular activity of the chalcones, 9b (MIC90 = 3.98 µM) and 9o (MIC90 = 3.84 µM) was found to be more than two-fold more active than the standard drugs, streptomycin (MIC90 = 10.75 µM) and ciprofloxacin (MIC90 = 9.43 µM), while their antitubercular activity was found to be more than six-fold more active than pyrazinamide (MIC90 = 25.38 µM). Further, the molecular docking studies employing Mycobacterium tuberculosis protein tyrosine phosphatase (MtbPtp) was carried out to observe docking scores.

Keywords

Chalcones Mycobacterium tuberculosis Alamar Blue assay Anti-tuberculosis H37Rv Tyrosine phosphatase 

Notes

Acknowledgements

The authors are highly thankful to Dr. G.V. Subbaraju, CEO, Natsol Labs, Visakhapatnam for constant support and Prof. G. Rambabu, Gitam University, Hyderabad for helpful suggestions in docking studies. The authors also thank UGC for the financial assistance (F.No.39-752/2011).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

44_2018_2183_MOESM1_ESM.docx (4.8 mb)
Supplementary Information

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Rambabu Anandam
    • 1
  • Surender Singh Jadav
    • 2
  • Vasu Babu Ala
    • 3
  • Mohamed Jawed Ahsan
    • 4
  • Hari Babu Bollikolla
    • 1
  1. 1.Department of ChemistryAcharya Nagarjuna UniversityGunturIndia
  2. 2.Department of Chemistry, School of TechnologyGITAM UniversityHyderabadIndia
  3. 3.Department of Science & HumanitiesQIS College of Engineering & TechnologyOngoleIndia
  4. 4.Department of Pharmaceutical ChemistryMaharishi Arvind College of PharmacyJaipurIndia

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