Two new isodaucane‐type sesquiterpenoids, namely (1R,4S,5S,6R,7S,10R)‐isodauc‐6,7,10‐triol, C15H28O3, (1), and (1R,4S,5S,6S,7S,10R)‐isodauc‐6,7,10‐triol, (2), and a new eudesmane‐type sesquiterpenoid, 1β,4β,5α‐trihydroxyeudesmane,...
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https://www.riss.kr/link?id=O116337921
Qi Zhang ; Li Ma ; Zhaoxia Qu ; Guige Hou ; Yanan Wang ; Chunhua Wang ; Feng Zhao
2018년
-
0108-2701
2053-2296
SCI;SCIE;SCOPUS
학술저널
1440-1446 [※수록면이 p5 이하이면, Review, Columns, Editor's Note, Abstract 등일 경우가 있습니다.]
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
Two new isodaucane‐type sesquiterpenoids, namely (1R,4S,5S,6R,7S,10R)‐isodauc‐6,7,10‐triol, C15H28O3, (1), and (1R,4S,5S,6S,7S,10R)‐isodauc‐6,7,10‐triol, (2), and a new eudesmane‐type sesquiterpenoid, 1β,4β,5α‐trihydroxyeudesmane,...
Two new isodaucane‐type sesquiterpenoids, namely (1R,4S,5S,6R,7S,10R)‐isodauc‐6,7,10‐triol, C15H28O3, (1), and (1R,4S,5S,6S,7S,10R)‐isodauc‐6,7,10‐triol, (2), and a new eudesmane‐type sesquiterpenoid, 1β,4β,5α‐trihydroxyeudesmane, (3), were obtained from the rhizomes of homalomena occulta with the aid of column chromatography. Their structures were elucidated based on extensive spectroscopic analyses, including 1D NMR, 2D NMR and HRESIMS. The structure of (1) was confirmed by single‐crystal X‐ray diffraction and the absolute configuration was assigned with respect to that of the precursor. The single‐crystal structure reveals that adjacent molecules of (1) embrace through two groups of intermolecular O—H…O hydrogen bonds to generate a two‐dimensional sheet with a 63‐net topology. The three compounds were evaluated for their activity against lipopolysaccharide‐induced production of nitrogen oxide (NO) in RAW 264.7 cells, and (1) showed an inhibitory effect on NO production, with IC50 values of 5.7±0.22 µM.
Three new sesquiterpenoids were isolated from homalomena occulta, and their structures were confirmed based on extensive spectroscopic analyses and single‐crystal X‐ray diffraction. The three compounds were evaluated for their activity against the LPS‐induced production of nitrogen oxide (NO) in RAW 264.7 cells.
Special issue on Polyoxometalates