Abstract
Eight previously undescribed polyacetylenes, cirussurynes A-H, were isolated from the methanolic extract of the roots of Cirsium japonicum var. ussuriense. Their structures were elucidated by interpretation of extensive 1D and 2D NMR spectroscopy and HRESIMS spectrometry data. The configuration of triols in cirussurynes A, B, and E-G was deduced by the J-value based configuration analysis together with specific rotation values. All compounds were evaluated for their inhibitory effects on nitric oxide production against LPS-induced RAW 264.7 macrophages, and exhibited IC50 values ranging from 5.5 to 68.7 μM.
Original language | English |
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Article number | 113319 |
Journal | Phytochemistry |
Volume | 202 |
DOIs | |
Publication status | Published - 2022 Oct |
Bibliographical note
Funding Information:This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MIST) (No. 2020R1A2C1008406). The authors wish to thank the Korea Basic Science Institute for the NMR spectroscopic measurements.
Funding Information:
This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government ( MIST ) (No. 2020R1A2C1008406 ). The authors wish to thank the Korea Basic Science Institute for the NMR spectroscopic measurements.
Publisher Copyright:
© 2022 Elsevier Ltd
Keywords
- Asteraceae
- Cirsium japonicum var. ussuriense
- Nitric oxide
- Polyacetylene
- Structure elucidation
ASJC Scopus subject areas
- Biochemistry
- Molecular Biology
- Plant Science
- Horticulture