Anti-complement Activity of Triterpenoids from the Whole Plant of Patrinia saniculaefolia

  • An, Ren-Bo (College of Pharmacy, Yanbian University) ;
  • Na, Min-Kyun (College of Pharmacy, Yeungnam University) ;
  • Min, Byung-Sun (College of Pharmacy, Catholic University of Daegu) ;
  • Lee, Hyeong-Kyu (Korea Research Institute of Bioscience and Biotechnology) ;
  • Bae, Ki-Hwan (College of Pharmacy, Chungnam National University)
  • Published : 2008.12.31

Abstract

Two oleanane-type triterpenes (1, 2) and their glycosides (4-6), and one ursane-type triterpene (3) have been isolated from a methanolic extract of Patrinia saniculaefolia Hemsley (Valerianaceae) through repeated silica gel and reversed-phase C-18 column chromatography. Their chemical structures were determined as oleanolic acid (1), oleanonic acid (2), 23-hydroxyursolic acid (3), 3-O-${\alpha}$-L-arabinopyranosyl-oleanolic acid (4), 3-O-${\beta}$-D-glucopyranosyl-oleanolic acid (5), and oleanolic acid 3-O-[${\alpha}$-D-xylopyranosyl-($1{\rightarrow}3$)-${\beta}$-D-glucuronopyranoside-6-O-butyl-ester] (6) on the basis of their MS, $^1H$-, and $^{13}C$-NMR spectral data. All compounds were isolated from the whole plant of the P. saniculaefolia for the first time. These compounds were examined for their anti-complement activity against the classical pathway of the complement system. Among them, compounds 1 - 3 exhibited anti-complement activity with $IC_{50}$ values of 470.1, 212.2, and 121.0 ${\mu}M$, respectively, whereas compounds 4 - 6 were inactive. These results suggest that the carbonyl or hydroxy group at C-3 in the oleananeand/or ursane-triterpenes are important for the anti-complement activity against the classical pathway.

Keywords

References

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