Results 11 to 20 of about 1,184 (147)

Plant-Origin Coumarin-Hemiterpene Ethers and Their Chemotaxonomic Significance

open access: yesJundishapur Journal of Natural Pharmaceutical Products
Context: A particular class of coumarins, known as coumarin-hemiterpene ethers (CHEs), consists of a coumarin nucleus and a prenyloxy portion. No detailed report on natural coumarin-hemiterpene ethers (NCHEs) and their plant sources is available ...
Saba Rahimi Bahoosh, Mahdi Mojarrab
semanticscholar   +2 more sources

Frog Volatile Compounds: Application of in vivo SPME for the Characterization of the Odorous Secretions from Two Species of Hypsiboas Treefrogs [PDF]

open access: yesJournal of Chemical Ecology, 2015
A novel in vivo design was used in combination with solid-phase microextraction (SPME) and gas chromatography/mass spectrometry (GC/MS) to characterize the volatile compounds from the skin secretion of two species of tree frogs.
A. Brunetti   +6 more
semanticscholar   +4 more sources

Synthetic Biology and Metabolic Engineering of Microalgae for Sustainable Lipid and Terpenoid Production: An Updated Perspective. [PDF]

open access: yesPlant Biotechnol J
ABSTRACT Microalgae are increasingly recognised as powerful platforms for the sustainable production of lipids and terpenoids, with expanding applications in the food, fuel and biomanufacturing industries. In this updated review, we consolidate and critically assess the most recent advances in synthetic biology and metabolic engineering of key ...
Shitanaka T   +6 more
europepmc   +2 more sources

Could the Biological Potency of Porcelia macrocarpa R.E. Fries (Annonaceae) be Linked to Its Diverse Metabolite Profile? [PDF]

open access: yesChem Biodivers
ABSTRACT Porcelia macrocarpa is a Brazilian plant species belonging to the Annonaceae family. To date, more than 190 compounds have been identified and/or isolated from this species, with terpenoids comprising the majority (62%). Alkaloids represent the second most abundant class (11%), followed by steroids (4%), acetogenins (4%), fatty acids (4 ...
Thevenard F   +4 more
europepmc   +2 more sources

Synthesis of hemiterpene 1-bromo-3-methyl-2-butene derivatives [PDF]

open access: yesAIP Conference Proceedings, 2021
Hemiterpene 1-bromo-2-methyl-2-butene (prenyl bromide) is widely used as a prenyl source for various organic synthesis. One of them is the development of synthetic fragrances for the perfume industry which is growing rapidly for daily consumption. Based on our literature study, most fragrances contain terpenes.
Devi A. Putri, Mardi Santoso
openaire   +1 more source

Bacterial Degradation of tert-Amyl Alcohol Proceeds via Hemiterpene 2-Methyl-3-Buten-2-ol by Employing the Tertiary Alcohol Desaturase Function of the Rieske Nonheme Mononuclear Iron Oxygenase MdpJ [PDF]

open access: yesJournal of Bacteriology, 2011
Tertiary alcohols, such as tert-butyl alcohol (TBA) and tert-amyl alcohol (TAA) and higher homologues, are only slowly degraded microbially. The conversion of TBA seems to proceed via hydroxylation to 2-methylpropan-1,2-diol, which is further oxidized to 2-hydroxyisobutyric acid. By analogy, a branched pathway is expected for the degradation of TAA, as
Judith Schuster   +8 more
semanticscholar   +3 more sources

Action Mechanism of Essential Oils or Their Components Against Pathogenic Bacteria: Literature Review. [PDF]

open access: yesInt J Microbiol
Essential oils (EOs), derived from medicinal and aromatic plants, are natural mixtures of volatile, oily compounds with varying compositions and antibacterial mechanisms. Understanding the mechanisms of EOs and their components (EOCs) is essential for predicting their impacts on various microbes and their interactions with antibiotics.
El-Sakhawy MA   +8 more
europepmc   +2 more sources

Three New Hemiterpene Glycosides from Ilex macropoda.

open access: yesChemical and Pharmaceutical Bulletin, 1997
Phytochemical studies of Ilex macropoda led to the isolation of three new hemiterpene glycosides, 4-β-D-glucopyranosyloxy-5-hydroxyprenyl caffeate (aohada-glycoside A), 5-caffeoyloxy-4-β-D-glucopyranosyloxyprenyl alcohol (aohada-glycoside B), 4-(6-O-caffeoyl-β-D-glucopyranosyloxy)-5-hydroxyprenyl caffeate (aohada-glycoside C), together with betulin ...
FUCHINO, Hiroyuki   +2 more
openaire   +3 more sources

A new hemiterpene glycoside from the ripe tomatoes

open access: yesNatural Product Research, 2014
A new hemiterpene glycoside (1) was isolated from ripe tomatoes (the fruit of Lycopersicon esculentum, Solanaceae) along with eight known compounds. The chemical structure of 1 was determined to be 2-methylbutan-1-ol β-d-glucopyranosyl-(1 → 6)-β-d-glucopyranoside, based on spectroscopic data as well as chemical evidence.
Masateru, Ono   +7 more
openaire   +2 more sources

Headspace solid-phase microextraction combined with mass spectrometry as a powerful analytical tool for profiling the terpenoid metabolomic pattern of hop-essential oil derived from Saaz variety [PDF]

open access: yes, 2012
Hop(HumuluslupulusL.,Cannabaceaefamily)isprizedforitsessentialoilcontents,usedin beer production and, more recently, in biological and pharmacological applications. In this work,a methodinvolvingheadspace solid-phase microextractionand gas chromatography–
Câmara, José   +3 more
core   +1 more source

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