Skip to main content
Log in

Isolation and characterization of antisalmonellal anthraquinones and coumarins from Morinda lucida Benth. (Rubiaceae)

  • Original Paper
  • Published:
Chemical Papers Aims and scope Submit manuscript

Abstract

A new anthraquinone, 1,6-dihydroxy-2-hydroxymethyl-5-methoxy-9,10-anthracenedione (1), along with four known compounds, including 1,2-dimethoxyanthraquinone (2), morindone-5-methylether (3), scopoletin (4), and fraxidin (5) were isolated from the methylene chloride extract of the stem bark of Morinda lucida Benth. Structure elucidation was accomplished by analysis of the 1D and 2D NMR, IR and mass spectra. Compounds 1, 2, 4 and 5 were tested against five Salmonella strains. The minimal inhibitory concentrations (MICs) and minimal bactericidal concentrations (MBCs) were determined. The results indicated that the four compounds have different antibacterial activities, with MIC values ranging from 8 to 256 µg/mL. Among these four compounds, the best activity was observed for compound 4 against Salmonella enterica subsp. enterica serovar Typhimurim (STM), with a MIC value of 8 µg/mL. Compound 1 showed selective antibacterial activity toward the five Salmonella strains, with MICs of 16 µg/mL against STM, 32 µg/mL against S. enteritidis (STE), 64 µg/mL against S. enterica subsp. enterica serovar Typhi (ST) and S. enterica subsp. enterica serovar Typhi (ST566), and 128 µg/mL against S. enteritidis, S. enterica subsp. enterica serovar Typhi ATCC 6539 (STS). Compounds 1, 2, 4, and 5 have bactericidal effects (MBC/MIC ≤ 4) against the tested Salmonella strains, except for compound 4, which is bacteriostatic to STM with a MBC/MIC value of 16.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2

Similar content being viewed by others

References

Download references

Acknowledgements

JAM acknowledges the Fulbright Fellowship that supported his visit to Utah State University, USA. The Bruker Avance III HD Ascend-500 NMR instrument was funded by the National Science Foundation Award CHE–1429195.

Author information

Authors and Affiliations

Authors

Corresponding authors

Correspondence to James A. Mbah or Jixun Zhan.

Ethics declarations

Conflict of interest

The authors declare that there is no conflict of interest.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 (DOCX 963 KB)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Mfonku, N.A., Tadjong, A.T., Kamsu, G.T. et al. Isolation and characterization of antisalmonellal anthraquinones and coumarins from Morinda lucida Benth. (Rubiaceae). Chem. Pap. 75, 2067–2073 (2021). https://doi.org/10.1007/s11696-020-01460-3

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11696-020-01460-3

Keywords

Navigation