Results 21 to 30 of about 2,638 (179)
PLoS ONE, 2021 Aspergillus niger metabolites exhibited a wide range of biological properties including antioxidant and neuro-protective effects and some physical properties as green synthesis of silver nanoparticles AgNP. The present study presents a novel evidence for
Ghada Mahmoud Abdelwahab +5 more
doaj +1 more source
Results in Chemistry, 2021 A cascade Diels-Alder reaction coupled with an oxidative aromatization reaction was developed and applied to a chiral 2-pyrone for the synthesis of the relevant chiral synthon/chiral auxiliary (-)-cis-aminoindan-2-ol.
Arturo de la Rosa-Barrales +6 more
doaj +1 more source
Supercritical fluid extraction of γ-Pyrones from Ammi visnaga L. fruits
Future Journal of Pharmaceutical Sciences, 2018 Extraction with supercritical fluid technique has proved to be effective in many applications including extraction and separation of various active principals from medicinal plants.
Mokhtar Bishr +4 more
doaj +1 more source
Molecules, 2021 A chemical investigation into endozoic fungus Aspergillus niger L14 derived from the marine sponge of Reniera japonica collected off Xinghai Bay (China) resulted in the isolation of two dimeric naphtho-γ-pyrones, fonsecinone A (1) and isoaurasperone A (2)
Jia Liu +4 more
doaj +1 more source
Molecules, 2022 Eight naphtho-gamma-pyrones (NγPs) (1–8), together with four known biosynthetically related coumarin derivatives (9–12), were isolated from the potato dextrose agar media of a marine-derived fungus Aspergillus niger S-48.
Chang-Zheng Wu +4 more
doaj +1 more source
Materials Science for Energy Technologies, 2022 Hydric alcohols are important synthetic intermediates used to manufacture polymer, fine chemicals, and commodity products. Recent environmental problems due to fossil fuel-based non-degradable products have call for the advancement in research towards ...
Md. Imteyaz Alam +3 more
doaj +1 more source
A New Synthesis of 2-Pyrones [PDF]
Bulletin of the Chemical Society of Japan, 1975 Abstract The reaction of sodium salt of penta-2,4-dienoic acids with lithium chloropalladite in a polar solvent such as water led to the formation of 2-pyrone derivatives.
Taeko Izumi, Akira Kasahara
openaire +1 more source
Molecules, 2019 An ultra-high-performance liquid chromatographic (UHPLC) separation was developed for six kava pyrones (methysticin, dihydromethysticin (DHM), kavain, dihydrokavain (DHK), desmethoxyyangonin (DMY), and yangonin), two unidentified components, and three ...
Yijin Tang, Christine Fields
doaj +1 more source
Convergent Total Synthesis of 16β‐Hydroxylpseudobufarenogin
Angewandte Chemie, Volume 138, Issue 23, 1 June 2026.We present a novel convergent strategy that integrates Pd/Ag‐promoted Suzuki–Miyaura coupling with Ir‐catalyzed radical‐relay cyclization, enabling the first total synthesis of 16β‐hydroxylpseudobufarenogin. This approach is broadly applicable to the total synthesis of various oxygenated bufadienolides by simply modifying the fragment structures ...
Wataru Shigematsu +3 more
wiley +2 more sources