Results 91 to 100 of about 4,197 (216)
Food Frontiers, Volume 7, Issue 2, March 2026.ABSTRACT Medicago sativa L. (alfalfa) harbors a remarkably diverse reservoir of bioactive secondary metabolites. Flavonoids, isoflavones, and triterpenoid saponins dominate its bioactivity landscape, driving potent antioxidant, anti‐inflammatory, antimicrobial, estrogenic, hypolipidemic, and cytotoxic actions through redox modulation, membrane ...
Parham Joolaei Ahranjani +3 more
wiley +1 more source
Medium-Sized Carbocycles and Ethers from 4-Pyrones: A Photocyclization− Fragmentation Approach1 [PDF]
, 2016 Medium-Sized Carbocycles and Ethers from 4-Pyrones: A Photocyclization− Fragmentation ...
Mark L. Pugh (1617016) +3 more
core +1 more source
Reactivity of Carbonyl Group in y-Pyrones and in y-Pyridones. [PDF]
, 1935 Reactivity of Carbonyl Group in \(\gamma\)-Pyrones and in \(\gamma ...
S. S DESHAPANDE +2 more
core +1 more source
Marine Drugs, 2013 Two novel chlorinated pyrones, halomadurones A and B, and two novel brominated analogues, halomadurones C and D, were isolated from a marine Actinomadura sp. cultivated from the ascidian Ecteinascidia turbinata.
Thomas P. Wyche +6 more
doaj +1 more source
Alkynyl triazenes enable divergent syntheses of 2-pyrones [PDF]
The 2-pyrone motif occurs frequently in bioactive natural products and is appreciated as synthetic intermediates. However, only few methods allow for diversifying functional group modifications on this relevant heterocycle.
Bormann, Carl Thomas +3 more
core +1 more source
Evaluation of α-Pyrones and Pyrimidones as Photoaffinity Probes for Affinity-Based Protein Profiling [PDF]
, 2016 α-Pyrones and pyrimidones are common structural motifs in natural products and bioactive compounds. They also display photochemistry that generates high-energy intermediates that may be capable of protein reactivity.
Oliver A. Battenberg (2178426) +2 more
core +1 more source
α‑Pyrones with Diverse Hydroxy Substitutions from Three Marine-Derived Nocardiopsis Strains [PDF]
, 2016 Eight new α-pyrones 1–8 and three known α-pyrones 9–11 were isolated from three marine-derived Nocardiopsis strains SCSIO 10419, SCSIO 04583, and SCSIO KS107. The structures of compounds 1–8 were elucidated by comprehensive spectral analyses.
Wenjun Zhang (685002) +9 more
core +1 more source
Syntheses of α-Pyrones Using Gold-Catalyzed Coupling Reactions [PDF]
, 2015 Sequential alkyne activation of terminal alkynes and propiolic acids by gold(I) catalysts yields compounds having α-pyrone skeletons. Novel cascade reactions involving propiolic acids are reported that give rise to α-pyrones with different substitution ...
Mingji Dai (1265700) +3 more
core +1 more source
Identification and isolation of insecticidal oxazoles from Pseudomonas spp.
Beilstein Journal of Organic Chemistry, 2012 Two new and five known oxazoles were identified from two different Pseudomonas strains in addition to the known pyrones pseudopyronine A and B. Labeling experiments confirmed their structures and gave initial evidence for a novel biosynthesis pathway of ...
Florian Grundmann +7 more
doaj +1 more source
Pyran Rings Containing Polyketides from Penicillium raistrickii
Marine Drugs, 2016 Five new pyran rings containing polyketides, penicipyrans A–E (1–5), together with the known pestapyrone A (6), were isolated from the saline soil-derived Penicillium raistrickii. Their structures were determined by interpretation of NMR and HRESIMS data.
Li-Ying Ma +6 more
doaj +1 more source