Isopentenylated Bibenzyls and Phenolic Compounds from Dendrobium chrysotoxum Lindl

Two new isopentenyl bibenzyls, denchrysotonols A and B (1–2), along with 26 known phenolic compounds, were isolated from the stems of cultivated Dendrobium chrysotoxum Lindl. Their chemical structures were clearly elucidated by extensive spectroscopic analysis. Biological evaluation of isolated comp...

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Bibliographic Details
Published in:Chemistry & biodiversity 2022-06, Vol.19 (6), p.e202200259-n/a
Main Authors: Liu, Ying, Zhang, Jia‐Qian, Zhan, Rui, Chen, Ye‐Gao
Format: Article
Language:English
Subjects:
Breast cancer
denchrysotonols
Dendrobium
Dendrobium chrysotoxum
Inflammation
isopentenyl bibenzyls
Lipopolysaccharides
Macrophages
Nitric oxide
Phenolic compounds
Phenols
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Summary:Two new isopentenyl bibenzyls, denchrysotonols A and B (1–2), along with 26 known phenolic compounds, were isolated from the stems of cultivated Dendrobium chrysotoxum Lindl. Their chemical structures were clearly elucidated by extensive spectroscopic analysis. Biological evaluation of isolated compounds revealed that phenanthrenes (14, 16–17, 20, and 22) and fluorenone 25 exhibited anti‐inflammatory activities which inhibited nitric oxide (NO) production in LPS‐activated RAW264.7 macrophages with the IC50 values ranging from 9.4 to 32.5 μM. Moreover, bibenzyls (1–2 and 7) showed good anti‐proliferative activities against triple‐negative breast cancer (TNBC) cells (HCC1806, MDA‐MB‐231, and MB‐MB‐468) with the IC50 values ranging from 8.1 to 18.6 μM, of which 1 and 2 seemed preferentially inhibit MDA‐MB‐231 cells.
ISSN:1612-1872
1612-1880
DOI:10.1002/cbdv.202200259