Results 61 to 70 of about 17,659,431 (225)
, 2021 Cyclocurcumin, a turmeric curcuminoid with potential therapeutic properties, is also a natural photoswitch that may undergo E/Z photoisomerization under UV light. In order to be further exploited in relevant biological applications, photoactivation under
Stephane, Parant +5 more
core +1 more source
Penichrypyrone A: A New γ-Pyrone Derivative from the Sponge-Derived Fungus LS18
Natural Product Communications, 2019 A new γ -pyrone derivative, penichrypyrone A ( 1 ), along with 4 known compounds, conichaetone E ( 2 ), janthinone ( 3 ), mrlactonel ( 4 ), and aspergillusene A ( 5 ), was isolated from the EtOAc extract of the sponge-derived fungus Penicillium ...
Xiaoping He +6 more
doaj +1 more source
Molecules, 2004 The reaction of 4-hydroxycoumarin (1) with some primary amines 2a-h and morpholine (2i) under microwave irradiation occurred without opening of the lactone ring to give N-substituted 4-aminocoumarins 3a-i in excellent yields.
Ivo C. Ivanov, Edmont V. Stoyanov
doaj +1 more source
, 2016 Readily prepared from the regioselective Pd-catalyzed coupling reactions of 3,5-dibromo-2-pyrone, 3-bromo-2-pyrone-5-carboxylates undergo tandem uninterrupted sequential Diels−Alder cycloaddition reactions with allyl vinyl ethers in a highly regio- and ...
Cheon-Gyu Cho (1725187) +2 more
core +2 more sources
Push–Pull Ynamines and Push–Pull Ynamides: Synthesis, Structure, Reactivity, and Application
European Journal of Organic Chemistry, Volume 29, Issue 19, 22 May 2026.Push–pull ynamines and push–pull ynamides, which carry an EWG and an amino or amido group as EDG, are highly interesting classes of EDG‐EWG alkynes that have been intensively studied due to their exceptional reactivity. In this review, the synthesis, structure, reactivity, and application of push–pull ynamines, push–pull ynecarbamates, push–pull ...
Hans‐Joachim Gais
wiley +1 more source
Poly[(μ-5,7-dihydroxy-4-oxo-2-phenyl-4H-chromene-8-sulfonato)potassium(I)]
Acta Crystallographica Section E, 2009 In the polymeric title compound, [K(C15H9O7S)]n, the potassium cation is five-coordinated by four sulfonate O atoms and one carbonyl O atom. Two intramolecular O—H...O hydrogen bonds stabilize the conformation of the anion.
Bin Liu, Bo-Lun Yang
doaj +1 more source
Recent Approaches for the Synthesis of Pyridine and Quinoline Cores Present in Natural Products
Advanced Synthesis &Catalysis, Volume 368, Issue 10, 19 May 2026.An anthology of the most recent methods used to synthesize pyridines and quinolines found in natural products over the last decade. Pyridines, quinolines, and their derivatives represent a class of significant heterocyclic compounds that are prevalent in a multitude of natural products, including alkaloids found in plants, fungi, insects, marine ...
Carl Bowman +2 more
wiley +1 more source
Regioselectivity in the Stille Coupling Reactions of 3,5-Dibromo-2-pyrone
, 2016 The Stille couplings of 3,5-dibromo-2-pyrone normally take place regioselectively at C3, lower in electron density than C5, thus oxidative addition proceeds faster .
Hyung-Jin Kim (1427263) +2 more
core +1 more source
Advanced Science, Volume 13, Issue 27, 13 May 2026.This study presents the first telomere‐to‐telomere genomes and population resources for Diaporthe pathogens, uncovering the largest known fungal repertoire of secondary metabolite gene clusters. Structural variations and horizontal gene transfer drive cluster diversification, while specific rapidly evolving clusters control virulence, offering novel ...
Kainan Li +9 more
wiley +1 more source
Development of Fluorescent 2-Pyrone Derivatives Using Ketene Dithioacetals for Organic EL Devices [PDF]
, 2009 In recent years, organic electro luminescent (EL) materials have received considerable attention due to their potential application in next-generation display devices with high brightness levels, wide color ranges, and wide viewing angles.
Shigemitsu, Yasuhiro +4 more
core +1 more source