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Natural Product Research
Formerly Natural Product Letters
Volume 30, 2016 - Issue 24
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Short Communications

In vitro and ex vivo antitubercular activity of diarylheptanoids from the rhizomes of Alpinia officinarum Hance

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Pages 2825-2830 | Received 05 Jun 2015, Accepted 10 Jan 2016, Published online: 01 Mar 2016
 

Abstract

Phytochemical investigation of methanol extract of the rhizomes of Alpinia officinarum Hance afforded four known diarylheptanoids 1,7-diphenylhept-4-en-3-one (1), 5-hydroxy-1,7-diphenyl-3-heptanone (2), 5-hydroxy-7-(4″-hydroxy-3″-methoxyphenyl)-1-phenyl-3-heptanone (3), and 7-(4″-hydroxy-3″-methoxyphenyl)-1-phenyl heptan-3-one (4).The acetate derivative of (4), 7-(4″-actetate-3″-methoxy phenyl)-1-phenyl heptan-3-one (5), was prepared. These diarylheptanoids exhibited promising in vitro and ex vivo antitubercular activity for the first time against dormant Mycobacterium tuberculosis H37Ra with the IC50 values between 0.3447.69 and 0.13–22.91 μM, respectively. All compounds showed comparable activity against Mycobacterium bovis BCG (dormant phage) and did not show any activity against two gram + ve and two gram –ve bacterial strains. These compounds were also weakly cytotoxic up to 300 μM against three human cancer cell lines THP-1, Panc-1 and A549.

Acknowledgements

Authors are grateful to Dr. S. G. Gupta, Principal, MES Abasaheb Garware College, Pune, India, and Dr. Sourav Pal, Director, National Chemical Laboratory, Pune, India, for providing necessary facilities to carry out the study. The authors also would like to acknowledge Department of Science and Technology for FIST grant.

Funding

There was no financial support.

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