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Two new triterpenoid saponins from the leaves of Ilex kudingcha.

Authors
  • Zuo, Wen-Jian
  • Dai, Hao-Fu
  • Zeng, Yan-Bo
  • Wang, Hui
  • Chen, Hui-Qin
  • Wang, Jin-Hui
Type
Published Article
Journal
Journal of Asian natural products research
Publication Date
Jan 01, 2012
Volume
14
Issue
4
Pages
308–313
Identifiers
DOI: 10.1080/10286020.2011.653347
PMID: 22375867
Source
Medline
License
Unknown

Abstract

Two new triterpene saponins, ilekudinchosides F (1) and G (2), along with three known saponins were isolated from the leaves of Ilex kudingcha C. J. Tseng. The new compounds were characterized as 3β,19α-dihydroxy-12α-ethoxy-urs-13(18)-ene-28,20β-lactone-3-O-[β-D-glucopyranosyl(1 → 3)]-[α-L-rhamnopyranosyl(1 → 2)]-α-L-arabinopyranoside (1) and 3β,19α-dihydroxy-12α-methoxy-urs-13(18)-ene-28,20β-lactone-3-O-[α-L-rhamnopyranosyl(1 → 2)]-α-L-arabinopyranoside (2). The new structures were elucidated by spectroscopic methods including 1D and 2D NMR, HR-TOF-MS, and CD spectrometry, and the known compounds were identified by the comparison of their NMR and HR-TOF-MS data with those reported in the literature.

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