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Effect of 6 alpha,7 beta-dihydroxyvouacapan-17 beta-oic acid and its lactone derivatives on the growth of human cancer cells.

Abstract
The furanditerpene 6 alpha,7 beta-dihydroxyvouacapan-17 beta-oic acid (1) is a natural product biosynthesized by some species from the genus Pterodon (Leguminosae). This secondary metabolite has multiple biological activities that include anti-inflammatory, analgesic, plant growth regulatory, anti-edematogenic, photosystem II inhibitory and photosynthesis uncoupler, and antifungal properties. However, few studies on the antiproliferative profile of compound 1 and/or its derivatives have been reported up to date. Here, we describe the isolation of compound 1 from hexane extract of P. polygalaeflorus fruits as well as the semisynthesis of three lactone derivatives: 6 alpha-hydroxyvouacapan-7 beta,17 beta-lactone (2), 6 alpha-acetoxyvouacapan-7 beta,17 beta-lactone (3), and 6-oxovouacapan-7 beta,17 beta-lactone (4). Additionally, antiproliferative activity of these compounds against nine human cancer cell lines was investigated. Our results revealed that 6 alpha-hydroxyvouacapan-7 beta,17 beta-lactone (2) was the most potent furanditerpene against all cancer cell lines studied. The presence of non-substituted hydroxyl group at C-6 and the presence of 7 beta,17 beta-lactone ring are important for the antiproliferative activity of these compounds.
AuthorsFelipe P G Euzébio, Flávio J L dos Santos, Dorila Piló-Veloso, Ana Lúcia T G Ruiz, João Ernesto de Carvalho, Dalton L Ferreira-Alves, Angelo de Fátima
JournalBioorganic chemistry (Bioorg Chem) Vol. 37 Issue 3 Pg. 96-100 (Jun 2009) ISSN: 1090-2120 [Electronic] United States
PMID19394666 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • 6 alpha-hydroxyvouacapan-7 beta,17 beta-lactone
  • Antineoplastic Agents, Phytogenic
  • Diterpenes
  • Lactones
  • vouacapan
Topics
  • Animals
  • Antineoplastic Agents, Phytogenic (chemistry, isolation & purification, pharmacology)
  • Cell Line, Tumor
  • Cell Proliferation (drug effects)
  • Diterpenes (chemistry, isolation & purification, pharmacology)
  • Drug Screening Assays, Antitumor
  • Fabaceae (chemistry)
  • Humans
  • Lactones (chemistry, isolation & purification, pharmacology)

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