Publication:
Two new phenolic compounds from the Vietnamese lichen <i>Parmotrema tinctorum</i>
Two new phenolic compounds from the Vietnamese lichen <i>Parmotrema tinctorum</i>
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Date
2020
Authors
Van-Muoi Bui
Thuc-Huy Duong
Thi-Anh-Minh Nguyen
Thi-Ngoc-Van Nguyen
Ngoc-Hong Nguyen
Huu-Hung Nguyen
Warinthorn Chavasiri
Kim-Phi-Phung Nguyen
Bui-Linh-Chi Huynh
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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.
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Keywords
lichen,
pamotrema tinctorum,
depsidone,
tinctorinone,
methyl orsellinate