Results 21 to 30 of about 32,287 (235)

Moroccan propolis: a natural antioxidant, antibacterial, and antibiofilm against Staphylococcus aureus with no induction of resistance after continuous exposure [PDF]

open access: yes, 2018
This study was performed to evaluate the total phenols, flavonoids, and antioxidant activities of twenty-four propolis samples from different regions of Morocco.
AAZZA, Smail   +7 more
core   +1 more source

Chemical and antimicrobial analyses of Sideritis romana L. subsp. purpurea (Tal. ex Benth.) Heywood, an endemic of the Western Balkan [PDF]

open access: yes, 2017
A comprehensive study on essential oil and different solvent extracts of Sideritis romana L. subsp. purpurea (Tal. ex Benth.) Heywood (Lamiaceae) from Montenegro is reported. The gas chromatography-mass spectrometry analysis of the essential oil revealed
Božović, Mijat   +7 more
core   +1 more source

Machine Learning Accelerates Crystallization for Structure Determination

open access: yesAngewandte Chemie, EarlyView.
Single‐crystal x‐ray diffraction (SCXRD) is often constrained by the difficulty of obtaining suitable crystals. Here, a machine learning‐accelerated co‐crystal discovery workflow is established for a crystalline mate strategy that achieves over 95% prediction accuracy and experimentally delivers 114 co‐crystals from 120 candidates.
Cui‐Zhou Luan   +10 more
wiley   +2 more sources

Review: Marine natural products [PDF]

open access: yes, 2005
This review covers the literature published in 2003 for marine natural products, with 619 citations (413 for the period January to December 2003) referring to compounds isolated from marine microorganisms and phytoplankton, green algae, brown algae, red ...
Blunt, John W.   +4 more
core   +3 more sources

A novel PKC activating molecule promotes neuroblast differentiation and delivery of newborn neurons in brain injuries [PDF]

open access: yes, 2020
Neural stem cells are activated within neurogenic niches in response to brain injuries. This results in the production of neuroblasts, which unsuccessfully attempt to migrate toward the damaged tissue. Injuries constitute a gliogenic/non-neurogenic niche
A Buffo   +48 more
core   +2 more sources

Stemarane Diterpenes and Diterpenoids

open access: yesInternational Journal of Molecular Sciences, 2019
In this article the scientific activity carried out on stemarane diterpenes and diterpenoids, isolated over the world from various natural sources, was reviewed. The structure elucidation of stemarane diterpenes and diterpenoids was reported, in addition to their biogenesis and biosynthesis.
Leonelli, Francesca   +3 more
openaire   +2 more sources

Characterization of phloroglucinol derivatives and diterpenes in Euphorbia ebracteolata Hayata by utilizing ultra-performance liquid chromatography/quadrupole time-of-flight mass spectrometry

open access: yesJournal of Pharmaceutical Analysis, 2013
Euphorbia ebracteolata Hayata (E. ebracteolata) is a Chinese herbal medicine used for the treatment of tumor diseases. An ultra-performance liquid chromatography/quadrupole time-of-flight mass spectrometry (UPLC–Q–TOF/MS) based chemical profiling ...
Can-Jian Wang   +4 more
doaj   +1 more source

Diterpenes from the Marine Algae of the Genus Dictyota

open access: yesMarine Drugs, 2018
Species of the brown algae of the genus Dictyota are rich sources of bioactive secondary metabolites with diverse structural features. Excellent progress has been made in the discovery of diterpenes possessing broad chemical defensive activities from ...
Jiayun Chen   +6 more
doaj   +1 more source

Euphorbia-derived natural products with potential for use in health maintenance [PDF]

open access: yes, 2019
Euphorbia genus (Euphorbiaceae family), which is the third largest genus of angiosperm plants comprising ca. 2000 recognized species, is used all over the world in traditional medicine, especially in the traditional Chinese medicine. Members of this taxa
Adedoyin   +34 more
core   +4 more sources

Diterpenes from Sideritis argyrea

open access: yesFitoterapia, 2001
The known ent-kaurene diterpenes 1-9 and a new ent-labdane, ent-6beta,8alpha-dihydroxylabda-13(16),14-diene (10), were isolated from the whole plant of Sideritis argyrea. Their structures were elucidated based on one- and two-dimensional NMR techniques and HRMS.
Topçu, Gülaçtı   +4 more
openaire   +5 more sources

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