Results 181 to 190 of about 29,579 (219)

PA116 A NEW NAPHTHOQUINONE FROM TECTONA GRANDIS

International Symposium on the Chemistry of Natural Products, 1988
Singh, Pahup, Jain, Sunita
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Integrating morphological and phytochemical studies on some selected taxa of Lamiaceae Lindl. and Verbenaceae Juss. [PDF]

BMC Plant Biol
Garas JS, Salim MA, Hussein MI, Mourad MM, Ammar NM, Ayoub MM.   +5 more
europepmc   +1 more source

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Thermal and compositional properties of treated Tectona grandis

Biomass Conversion and Biorefinery, 2019
A torrefaction parametric study was conducted on Tectona grandis at varying torrefaction temperatures (240–300 °C), residence times (30–60 min), and particle sizes (2–6 mm) using a full factorial design (FFD). Optimum parameters were obtained through numerical optimization using the response optimizer in Minitab 17.
Adekunle A Adeleke, Jamiu Kolawole Odusote   +1 more
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Bioactive apocarotenoids from Tectona grandis

Phytochemistry, 2008
The bioactive fractions of Tectona grandis have yielded seven apocarotenoids, two of which have been isolated for the first time as natural products (tectoionols A and B). The chemical structures were determined through 1D and 2D nuclear magnetic resonance experiments.
Francisco A, Macías, Rodney, Lacret, Rosa M, Varela, Clara, Nogueiras, Jose M G, Molinillo   +4 more
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Isolation and Phytotoxicity of Terpenes from Tectona grandis

Journal of Chemical Ecology, 2010
A study was carried out on the allelopathic potential of four forest species, Tectona grandis, Aleurites fordii, Gliricidia sepium, and Maytenus buxifolia. The most active species, T. grandis, was selected to perform a phytochemical study. A new compound, abeograndinoic acid, was isolated, and elucidation of its structure showed that this compound has ...
Francisco A, Macías, Rodney, Lacret, Rosa M, Varela, Clara, Nogueiras, Jose M G, Molinillo   +4 more
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Relationship of Tectoquinone to Durability in Tectona grandis

Nature, 1958
THE heartwood of teak (Tectona grandis L.f.) is extremely resistant to attack by insects or by fungi; but the reasons for this resistance are not known. It is usually ascribed to the presence of toxic substances, and it has been suggested that tectoquinone (β-methyl anthraquinone), which is characteristically present in teak heartwood, may be ...
P. RUDMAN, E. W. B. DA COSTA, F. J. GAY, A. H. WETHERLY   +3 more
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Effect of Tectona grandis on phenylhydrazine-induced anaemia in rats

Fitoterapia, 2008
Traditional oral report indicates that Tectona grandis is used in the treatment of anaemia in Togo. For this purpose, the extract of T. grandis leaves is evaluated on anaemia model of rat induced by intraperitoneal injection of phenylhydrazine at 40 mg/kg for 2 days. Oral administration of T.
Aboudoulatif, Diallo, Messanvi, Gbeassor, Ahoefa, Vovor, Kwashie, Eklu-Gadegbeku, Kodjo, Aklikokou, Amegnona, Agbonon, Ange A, Abena, Comla, de Souza, Koffi, Akpagana   +8 more
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Note: A NAPHTHOQUINONE DERIVATIVE FROM TECTONA GRANDIS (LINN.)

Journal of Asian Natural Products Research, 2004
A new naphthoquinone derivative has been isolated, along with a number of prenylnaphthoquinone congeners, from the heartwood of Tectona grandis (Linn.). It was characterized as dehydro-alpha-isodunnione (1) by careful analysis of its spectral data.
Pradeep K, Gupta, Pahup, Singh
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TREE BREEDING WITH TEAK (TECTONA GRANDIS)

Australian Forestry, 1962
SUMMARY Teak is one of the most important commercial trees in the tropical lowlands. Considerable attention is toeing devoted to tree breeding with teak in countries possessing1 indigenous forests. The importance of selecting provenance strains and of tree breeding work in countries establishing exotic teak forests is stressed.
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Insect pollinators of teak (Tectona grandis) in Kerala

Indian Journal of Forestry, 2009
Insects play a major role in pollination of teak. Insect visitation was observed to commence in the morning and continued till noon after which the activity decreased. Maximum insect visit coincided with the anthesis, which occurred from 8 AM to 12 PM. Insects observed on the teak florescence belonged to the orders Hymenoptera, Lepidoptera, Coleoptera,
K. Mohanadas, George Mathew, T. Narendran   +2 more
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