@Article{Niamke_etal2012,
author="Niamk{\'e}, F.B.
and Amusant, N.
and Stien, D.
and Chaix, G.
and Lozano, Y.
and Kadio, A.A.
and Lemenager, N.
and Goh, D.
and Adima, A.A.
and Kati-Coulibaly, S.
and Jay-Allemand, C.",
title="4{\textquoteright},5{\textquoteright}-Dihydroxy-epiisocatalponol, a new naphthoquinone from Tectona grandis L. f. heartwood, and fungicidal activity",
journal="International Biodeterioration and Biodegradation",
year="2012",
volume="74",
pages="93--98",
optkeywords="4{\textquoteright}",
optkeywords="5{\textquoteright}-Dihydroxy-epiisocatalponol",
optkeywords="Decay resistance",
optkeywords="Fungicidal",
optkeywords="Heartwood",
optkeywords="Naphthoquinone",
optkeywords="Tectona grandis",
abstract="A new naphthoquinone derivative was isolated from the heartwood of the teak stem. The chemical structure of this new compound, 4{\textquoteright},5{\textquoteright}-dihydroxy-epiisocatalponol, was determined using 1-D and 2-D nuclear magnetic resonance experiments, vibrational circular dichroism, HRMS, and optical rotation. We showed that this new naphthoquinone derivative plays a key role in the variability of decay resistance in teak wood. A high negative correlation was found between its concentration and the mass losses of the wood samples after exposure to the brown rot Antrodia sp., the fungus that is the most virulent against teak (R = -0.9; $\rho$ < 0.0001). In-vitro bioassays allowed us to demonstrate that 4{\textquoteright},5{\textquoteright}-dihydroxy-epiisocatalponol acted as a fungicide against Trametes versicolor (white rot) at 58 mg ml -1 (0.22 mM). Overall, our results demonstrated that the concentration of 4{\textquoteright},5{\textquoteright}-dihydroxy-epiisocatalponol could be used as a new tool to evaluate teak wood durability. {\textcopyright} 2012 Elsevier Ltd.",
optnote="Export Date: 27 September 2012; Source: Scopus; Coden: Ibbie; doi: 10.1016/j.ibiod.2012.03.010; Language of Original Document: English; Correspondence Address: Amusant, N.; CIRAD, Department Environments and societies, UMR Ecology forests of French Guiana, BP 732, 97310 Kourou cedex, French Guiana; email: nadine.amusant@cirad.fr",
optnote="exported from refbase (http://php.ecofog.gf/refbase/show.php?record=435), last updated on Thu, 27 Sep 2012 15:03:04 -0300",
issn="09648305 (Issn)",
opturl="http://www.scopus.com/inward/record.url?eid=2-s2.0-84866158230&partnerID=40&md5=3f5c27931234ef12a0eff6928de60dd0"
}