Two new phenolic compounds from the lichen Parmotrema cristiferum growing in Vietnam

Author:
Pham N.-K.-T., Nguyen H.T., Dao T.-B.-N., Vu-Huynh K.L., Nguyen T.-Q.-T., Huynh B.-L.-C., Le T.-D., Nguyen N.-H, Nguyen N.-H. & Duong T.-H.
Year:
2022
Journal:
Natural Product Research
Pages:
36(15): 3865–3871
Url:
https://doi.org/10.1080/14786419.2021.1892672
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Two new phenolic compounds, cristiferides A-B (1-2) together with six known compounds, 2,4-dihydroxyphthalide (3), lecanoric acid (4), orsellinic acid (5), 5-chloroorsellinic acid (6), methyl haematommate (7), and methyl β-orsellinate (8) were isolated from the lichen Parmotrema cristiferum (Taylor) Hale (Parmeliaceae). The structures of isolated compounds were identified from its spectroscopic data and by comparison with the literatures. Compounds 1-3 and 6-8 were evaluated for alpha-glucosidase inhibition. Compounds 2 and 7 revealed potent activity with IC50 values of 72.66 μM and 48.73 μM, respectively. Keywords: Lichen; Parmotrema cristiferum; cristiferides; depside; Parmeliaceae; monoaromatic compound; alpha-glucosidase.
Id:
34650
Submitter:
zdenek
Post_time:
Friday, 07 October 2022 15:05