Results 31 to 40 of about 5,199 (166)

Ethnomedicinal, Phytochemical and Pharmacological Investigations of Tetradenia riparia (Hochst.) Codd (Lamiaceae)

open access: yesFrontiers in Pharmacology, 2022
Tetradenia riparia Hochsteter codd. (Lamiaceae) in its native African continent, is considered one of the most popular aromatic medicinal plants. In folk medicine it may be used as an infusion to treat respiratory problems, cough, headache, stomach pain,
Sujogya Kumar Panda   +8 more
doaj   +1 more source

Xanthones and sesquiterpene derivatives from a marine-derived fungus Scopulariopsis sp. [PDF]

open access: yes, 2018
K
Ashour, Mohamed L.   +10 more
core   +1 more source

Gombapyrones E and F, New α-Pyrone Polyenes Produced by Streptomyces sp. KMC-002

open access: yesMolecules, 2011
Microorganism-derived polyene polyketides have been shown to display a variety of biological activities and have attracted great interest due to their structurally intriguing chemical diversity.
Kang Ro Lee   +3 more
doaj   +1 more source

Strategies for the synthesis of brevipolides

open access: yesBeilstein Journal of Organic Chemistry, 2021
In recent years fifteen 5,6-dihydro-α-pyrone derivatives, bearing either a distinctive cyclopropane or furan ring and named brevipolides A–O (1–15), have been isolated from the invasive plant Hyptis brevipes Poit.
Yudhi D. Kurniawan, A'liyatur Rosyidah
doaj   +1 more source

The evolutionary paths towards complexity: a metabolic perspective [PDF]

open access: yes, 2013
As sessile organisms, land plants have exploited their metabolic systems to produce a panoply of structurally and functionally diverse natural chemicals and polymers to adapt to challenging ecosystems.
Aharoni   +53 more
core   +1 more source

New Sorbicillinoids from the Mangrove Endophytic Fungus Trichoderma reesei SCNU-F0042

open access: yesMarine Drugs, 2023
Three new dimeric sorbicillinoids (1–3) and one new 3,4,6-trisubstituted α-pyrone (5), along with seven analogues (4 and 6–11), were isolated from the mangrove endophytic fungus Trichoderma reesei SCNU-F0042 under the guidance of molecular networking ...
Jialin Li   +5 more
doaj   +1 more source

Influence of blue stain on density and dimensional stability of Pinus radiata timber from northern Galicia (Spain) [PDF]

open access: yes, 2014
Holzforschung. International Journal of the Biology, Chemistry, Physics, and Technology of Wood; 69(1): 97–102 DOI: 10.1515/hf-2014-0014The presence of blue-stain fungi considerably decreases the value of Pinus radiata timber, which is commercially ...
Abuín Rouco, María Carmen   +1 more
core   +2 more sources

2-Oxo-2H-chromen-3-yl 4-tert-butylbenzoate

open access: yesIUCrData, 2016
In the title coumarin derivative, C20H18O4, the benzene ring of the benzoate group is oriented at a dihedral angle of 57.55 (9)° with respect to the planar chromene ring system [maximum deviation from plane is 0.027 (2) Å].
Konan René Kambo   +4 more
doaj   +1 more source

Sonochemical synthesis of bis(tri-n-butylstannyl) aromatic compounds via Barbier-like reactions [PDF]

open access: yes, 2013
This paper reports a study of the synthesis of aryltri-n-butylstannanes via a sonochemical Barbier reaction of aryl- and heteroaryl bromides with bis(tri-n-butyltin) oxide (2) in THF.
Fidelibus, Pablo Martin   +5 more
core   +2 more sources

Pd/C-mediated synthesis of α-pyrone fused with a five-membered nitrogen heteroaryl ring: A new route to pyrano[4,3-c]pyrazol-4(1H)-ones

open access: yesBeilstein Journal of Organic Chemistry, 2009
Pd/C-mediated alkynylation of 5-iodo-pyrazole-4-carboxylic acid, involving the first regioselective construction of α-pyrone ring on a pyrazol moiety via tandem coupling–cyclization process, has been developed to afford pyrano[4,3-c]pyrazol-4(1H)-one in ...
Dhilli Rao Gorja   +3 more
doaj   +1 more source

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