4.6 Article

GuapsidialA and GuadialsB and C: Three New Meroterpenoids with Unusual Skeletons from the Leaves of Psidium guajava

Journal

CHEMISTRY-A EUROPEAN JOURNAL
Volume 21, Issue 25, Pages 9022-9027

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201500533

Keywords

biogenetic pathways; cytotoxicity; meroterpenoids; natural products; structure elucidation

Funding

  1. NSFC-Guangdong Province [U1401225]
  2. National Natural Science Foundation of China [81172946]
  3. Science and Technology Program of China [2012ZX09103201-056]
  4. Program for New Century Excellent Talents in University [NCET-11-0857]
  5. Jinan University

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A novel sesquiterpene-based Psidium meroterpenoid, possessing an unusual coupling pattern, and two new monoterpene-based meroterpenoids with unprecedented skeletons were isolated from the leaves of Psidium guajava. Their structures and absolute configurations were elucidated by spectroscopic, X-ray diffraction, and computational methods. The plausible biosynthetic pathway of these meroterpenoids as well as their cytotoxicities toward HepG2 and HepG2/ADM cells were also discussed.

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