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Natural Product Research
Formerly Natural Product Letters
Volume 36, 2022 - Issue 13
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Research Articles

Two new phenolic compounds from the Vietnamese lichen Parmotrema tinctorum

Van-Muoi Buia Department of Organic Chemistry, University of Science, National University – Ho Chi Minh City, Ho Chi Minh City, VietnamView further author information
,
Thuc-Huy Duongb Department of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, VietnamCorrespondence[email protected] [email protected]
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,
Thi-Anh-Minh Nguyenc Department of Nature, Dong Nai University, Bien Hoa, Dong Nai, VietnamView further author information
,
Thi-Ngoc-Van Nguyena Department of Organic Chemistry, University of Science, National University – Ho Chi Minh City, Ho Chi Minh City, VietnamView further author information
,
Ngoc-Hong Nguyend CirTech Institute, Ho Chi Minh City University of Technology (HUTECH), Ho Chi Minh City, VietnamView further author information
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Huu-Hung Nguyene Faculty of Technology, Van Lang University, Ho Chi Minh City, VietnamView further author information
,
Warinthorn Chavasirif Center of Excellence in Natural Products Chemistry, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, ThailandView further author information
,
Kim-Phi-Phung Nguyena Department of Organic Chemistry, University of Science, National University – Ho Chi Minh City, Ho Chi Minh City, VietnamView further author information
&
Bui-Linh-Chi Huynhc Department of Nature, Dong Nai University, Bien Hoa, Dong Nai, VietnamCorrespondence[email protected] [email protected]
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Pages 3429-3434 | Received 12 Oct 2020, Accepted 09 Dec 2020, Published online: 24 Dec 2020
 
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Abstract

Chemical investigation of the lichen Parmotrema tinctorum (Nyl.) Hale led to the isolation of two new phenolic compounds, 2-ethylhexyl orsellinate (1) and tinctorinone (2). The structures were determined by analysis of their MS and NMR data as well as by comparison with literature data. The 2-ethylhexyl ester group of 2-ethylhexyl orsellinate is uncommon among lichen metabolites. Tinctorinone revealed strong inhibition towards α-glucosidase.

Graphical Abstract

Acknowledgments

The authors would like to thank Dr. Thi-Phi-Giao Vo, Faculty of Biology, Ho Chi Minh University of Science, National University – Ho Chi Minh City for the authentification of the scientific name for the studied species.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grant number 104-NN.01-2019.45.

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