Molecules (Sep 2016)

Tetranortriterpenes and Limonoids from the Roots of Aphanamixis polystachya

  • Ching-Jie Lin,
  • I-Wen Lo,
  • Yu-Chi Lin,
  • Shun-Ying Chen,
  • Ching-Te Chien,
  • Yao-Haur Kuo,
  • Tsong-Long Hwang,
  • Shorong-Shii Liou,
  • Ya-Ching Shen

DOI
https://doi.org/10.3390/molecules21091167
Journal volume & issue
Vol. 21, no. 9
p. 1167

Abstract

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Phytochemical investigation of the acetone extract from the roots of Aphanamixis polystachya resulted in isolation of four new tetranortriterpenes (1–4) in addition to one protolimonoid (methyl-1ξ,7R-diacetoxy-23R,25-dihydroxy-20S,24R-21,24-epoxy-3,4-seco-apotirucall-4(28),14(15)-diene-3-oate (5)), five known limonoids (rohituka 3 (6), rohituka 7 (7), nymania 1 (8), rubrin G (9), prieurianin (10)) and a steroid (2,3-dihydroxy-5-pregnan-16-one (11)). Their structures were determined by spectroscopic analyses, including 2D-NMR (COSY, HMQC, HMBC, and NOESY) and high-resolution electrospray ionization mass spectrometry (HRESIMS). Cytotoxic and anti-inflammatory activities of these compounds were evaluated. Compounds 4 and 5 showed significant inhibition against superoxide generation and elastase release by human neutrophils in response to (formyl-l-methionyl-l-leucyl-l-phenylalanine/cytochalasin B) (FMLP/CB).

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