AI Article Synopsis

  • A study on the ethanol extract of Pojark roots identified 20 compounds, including two new ones called kompasinol P and a specific isoflavanone.
  • Enantiomers of kompasinol A were separated using chiral-phase HPLC for the first time, with their configurations determined through electronic circular dichroism data.
  • Fifteen isolated compounds were tested for their anti-inflammatory properties, showing moderate inhibition of nitric oxide production in stimulated macrophage cells with IC values between 11.45 and 68.54 μM.

Article Abstract

A phytochemical investigation on the 80% ethanol extract of the roots of Pojark. resulted in the isolation of 20 compounds, including two new ones, named kompasinol P () and 3,5,7,2',3'-pentahydroxy-4'-methoxyisoflavanone (). Among them, a pair of enantiomers, (7, 8 , 7', 8')kompasinol A ( and (7 , 8, 7', 8')-kompasinol A (), were successfully separated by the chiral-phase HPLC resolution for the first time. The absolute configurations of and were determined by the experimental and calculated electronic circular dichroism (ECD) data. 15 isolates were evaluated for their anti-inflammatory activity inhibiting the production of nitric oxide (NO) in lipopolysaccharide (LPS)-stimulated murine macrophage RAW 264.7 cells. Compounds , , , , , , , and - showed moderate inhibition with IC values ranging from 11.45 to 68.54 μM.

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http://dx.doi.org/10.1080/10286020.2021.1918119DOI Listing

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Article Synopsis
  • A study on the ethanol extract of Pojark roots identified 20 compounds, including two new ones called kompasinol P and a specific isoflavanone.
  • Enantiomers of kompasinol A were separated using chiral-phase HPLC for the first time, with their configurations determined through electronic circular dichroism data.
  • Fifteen isolated compounds were tested for their anti-inflammatory properties, showing moderate inhibition of nitric oxide production in stimulated macrophage cells with IC values between 11.45 and 68.54 μM.
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Paenibacillus taohuashanense sp. nov., a nitrogen-fixing species isolated from rhizosphere soil of the root of Caragana kansuensis Pojark.

Antonie Van Leeuwenhoek

November 2012

State Key Laboratory for Agrobiotechnology, Department of Microbiology and Immunology, College of Biological Sciences, China Agricultural University, Beijing, 100193, People's Republic of China.

A nitrogen-fixing bacterium, designated strain gs65(T), was isolated from a rhizosphere soil sample of Caragana kansuensis Pojark. Phylogenetic analysis based on a fragment of the nifH gene and the full-length 16S rRNA gene sequence revealed that strain gs65(T) is a member of the genus Paenibacillus. High levels of 16S rRNA gene similarity were found between strain gs65(T) and Paenibacillus borealis DSM 13188(T) (97.

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