4.8 Article

Guadial A and Psiguadials C and D, Three Unusual Meroterpenoids from Psidium guajava

Journal

ORGANIC LETTERS
Volume 14, Issue 20, Pages 5262-5265

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ol302423b

Keywords

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Funding

  1. Program for Changjiang Scholars and Innovative Research Team in University [IRT0965]
  2. Joint Fund of NSFC-Guangdong Province [U0932004]
  3. National Natural Science Foundation of China [81172946]
  4. Research Team Program of Natural Science Foundation of Guangdong Province [8351063201000003]
  5. Program for New Century Excellent Talents in University [NCET-11-0857]
  6. Science and Technology Planning Project of Guangzhou [2011J2200046, 2011J2200045]

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The first monoterpene-based meroterpenoid (1) and two novel sesquiterpene-based ones (2 and 3) with unprecedented skeletons were isolated from the leaves of Psidium guajava. Their structures with absolute configuration were elucidated by extensive spectroscopic studies. A plausible biosynthetic pathway for all meroterpenoids from the title plant is also proposed. Compounds 2 and 3 showed significant cytotoxicity toward HepG2 and HepG2/ADM cells.

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