Two new phenylpropanoid glycosidic compounds from the pseudobulbs of Pleione bulbocodioides and their hepatoprotective activity

Two new phenylpropanoid glycosidic compounds (a pair of epimers), named pleionosides K (1) and L (2), were isolated from the pseudobulbs of Pleione bulbocodioides (Franch.) Rolfe. Their structures, including absolute configurations, were elucidated by a combination of MS, NMR data, chemical methods...

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Bibliographic Details
Published in:Natural product research 2022-04, Vol.36 (8), p.1980-1987
Main Authors: Han, Shao-Wei, Shao, Si-Yuan, Sun, Hua, Li, Shuai
Format: Article
Language:English
Subjects:
antioxidant activity
biosynthetic pathway
Glycosides - chemistry
Glycosides - pharmacology
Hep G2 Cells
hepatoprotective activity
Humans
Hydrogen Peroxide - pharmacology
Molecular Structure
Orchidaceae - chemistry
phenylpropanoid glycosides
Pleione bulbocodioides
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Summary:Two new phenylpropanoid glycosidic compounds (a pair of epimers), named pleionosides K (1) and L (2), were isolated from the pseudobulbs of Pleione bulbocodioides (Franch.) Rolfe. Their structures, including absolute configurations, were elucidated by a combination of MS, NMR data, chemical methods and the comparison of experimental and calculated electronic circular dichroism (ECD). Their possible biosynthetic pathway was discussed in the text. Furthermore, the two compounds exhibited moderate hepatoprotective activity against N-acetyl-p-aminophenol (APAP)-induced HepG2 cell damage in in vitro assays, with cell survival rates of 25.83% and 28.82% at 10 μM, respectively, and antioxidant effect against H 2 O 2 -induced toxicity in human SK-N-SH cell, with increasing viability at 10 μM of 24.9% and 34.6%, respectively.
ISSN:1478-6419
1478-6427
DOI:10.1080/14786419.2020.1839457