Results 31 to 40 of about 39,725 (232)

Levels of cafestol, kahweol, and related diterpenoids in wild species of the coffee plant coffea [PDF]

open access: yes, 1997
Specific fatty acids and sterols in food composites from seven countries were analyzed. In the 1960s, groups of 8 to 49 men from 16 cohorts, ages 40–59 years and living in the United States, Finland, the Netherlands, Italy, Greece, the former Yugoslavia,
Bovenkamp, P. van de   +5 more
core   +9 more sources

Diterpenes from the Brown Alga Dictyota crenulata

open access: yesMolecules, 2008
The crude extract of the Brazilian brown alga Dictyota crenulata was analyzed by NMR spectroscopy and HRGC-MS techniques. Seven diterpenes were identified: pachydictyol A, dictyodial, 4β-hydroxydictyodial A, 4β-acetoxydictyodial A, isopachydictyol ...
Valéria Laneuville Teixeira   +4 more
doaj   +1 more source

The Remarkable Structural Diversity Achieved in ent-Kaurane Diterpenes by Fungal Biotransformations

open access: yesMolecules, 2014
The use of biotransformations in organic chemistry is widespread, with highlights of interesting applications in the functionalization of natural products containing unactivated carbons, like the kaurane diterpenes.
Jacqueline A. Takahashi   +4 more
doaj   +1 more source

Spongionella secondary metabolites protect mitochondrial function in cortical neurons against oxidative stress [PDF]

open access: yes, 2014
Accepted: 8 January 2014 This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Acknowledgments
Alfonso, Amparo   +9 more
core   +4 more sources

Reactivity of (3-Methylpentadienyl)iron(1+) Cation: Late-stage Introduction of a (3-Methyl-2Z,4-pentadien-1-yl) Side Chain [PDF]

open access: yes, 2016
The 3-methyl-2Z,4-pentadien-1-yl sidechain is found in various sesquiterpenes and diterpenes. A route for the late stage introduction of this functionality was developed which relies on nucleophilic attack on the (3-methylpentadienyl)iron(1+) cation ...
Chaudhury, Subhabrata   +2 more
core   +3 more sources

Isolation and HPLC Quantitative Determination of 5α-Reductase Inhibitors from Tectona grandis L.f. Leaf Extract

open access: yesMolecules, 2022
Steroid 5α-reductase plays a crucial role in catalyzing the conversion of testosterone to dihydrotestosterone, which is involved in many androgen-dependent disorders. Leaf-hexane extract from Tectona grandis L.f.
Kamonlak Insumrong   +6 more
doaj   +1 more source

Quality attributes of roasted Arabica coffee oil extracted by pressing: composition, antioxidant activity, sun protection factor and other physical and chemical parameters

open access: yesGrasas y Aceites, 2021
This research reports a comprehensive characterization of the composition profile and physical and chemical characteristics of roasted Arabica coffee oil obtained by mechanical pressing.
B.R. Böger   +3 more
doaj   +1 more source

Why do Euphorbiaceae tick as medicinal plants? : a review of Euphorbiaceae family and its medicinal features [PDF]

open access: yes, 2011
Euphorbiaceae is among the large flowering plant families consisting of a wide variety of vegetative forms some of which are plants of great importance. Its classification and chemistry have of late been subjects of interest possibly because of the wide ...
Mwine, Tedson Julius, Van Damme, Patrick
core  

Allelopathy as a Strategy for Biological Invasion: Calotropis procera and Its Impact on Plant Succession

open access: yesChemistry &Biodiversity, EarlyView.
Stages of the study on the allelopathic potential of Calotropis procera (Aiton) W. T. Aiton. The image shows the collection of plant material, the decomposition of organic matter, the identification of bioactive compounds, and the effects on the germination of Handroanthus impetiginosus (Mart. ex DC.) Mattos.
Bruno Melo de Alcântara   +7 more
wiley   +1 more source

Effect of Diterpenes Isolated of the Marine Alga Canistrocarpus cervicornis against Some Toxic Effects of the Venom of the Bothrops jararaca Snake

open access: yesMolecules, 2015
Snake venoms are composed of a complex mixture of active proteins and peptides which induce a wide range of toxic effects. Envenomation by Bothrops jararaca venom results in hemorrhage, edema, pain, tissue necrosis and hemolysis. In this work, the effect
Thaisa Francielle Souza Domingos   +5 more
doaj   +1 more source

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