Results 41 to 50 of about 20,223 (263)
Heliyon, 2022 Chalcone was prepared in a new route by reacting o-hydroxyacetophenone with 4-dimethylaminobenzaldehyde using piperidine as a catalyst. 3-Hydroxy-2-[4-(dimethylamino)phenyl] benzopyran-4-one were prepared by Algar-Flynn-Oyamada method by cyclization of ...
Hadi Aqel Khdera +3 more
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Synthesis and spectral characterization of a fluorescent marker [PDF]
, 2004 A fluorescent naphtofuran was synthetized from benzopyran by alcaline ring contraction and coupled to the α-amine group of various amino acids, in order to evaluate its applicability as a fluorescent marker for biomolecules.
Costa, Susana P. G. +2 more
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Unusual Swelling Behavior of Hydrogels Modified with Spiropyran as Appendage or Crosslinker
Advanced Functional Materials, EarlyView.Not so innocent after all—spiropyran crosslinkers in methylenebisacrylamide‐crosslinked poly(acrylamide‐co‐acrylic acid) hydrogels increase crosslinking density, but also, counterintuitively, increase swelling. Charge complexation, cooperative chemo‐mechanical effects, and aggregation may explain these observations.
Michael M. Lerch +7 more
wiley +1 more source
Synthesis and anti-norovirus activity of pyranobenzopyrone compounds [PDF]
, 2012 During the last decade, noroviruses have gained media attention as the cause of large scale outbreaks of gastroenteritis on cruise ships, dormitories, nursing homes, etc.
Chang, Kyeong-Ok +6 more
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Advanced Science, EarlyView.Homoisoflavanone (HIF), a bioactive compound isolated from Polygonatum kingianum, selectively suppresses colorectal cancer progression by inducing DNA damage‐mediated mitochondrial apoptosis and parthanatos‐like cell death. HIF triggers mitochondrial dysfunction, including depolarized membrane potential, elevated ROS, and ATP depletion, while impairing
Hongjie Fan +12 more
wiley +1 more source
Acta Crystallographica Section E, 2012 The asymmetric unit of the title compound, C26H12ClNO6, consists of two independent molecules. The central pyran rings and both the 1-benzopyran ring systems are nearly planar in both molecules [r.m.s.
Abdulrahman I. Almansour +4 more
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Studies on metal-ion complex formation of crown ether derivatives incorporating a photoionizable spirobenzopyran moiety by electrospray ionization mass spectrometry [PDF]
, 2000 Metal-ion complexation of crown ether derivatives incorporating one and two spirobenzopyran units was investigated by electrospray ionization mass spectrometry.The crowned spirobenzopyran derivatives exhibited very different metal ion-complexing behavior
Arakawa Ryuichi +9 more
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Novel Tricyclic Flavonoids as Promising Anti-MRSA Agents
PharmaceuticalsBackground: Methicillin-resistant Staphylococcus aureus (MRSA) is considered the main cause of nosocomial and community-associated infections. Because of antimicrobial resistance, MRSA infections are difficult or impossible to treat, leading to high ...
Cristina-Veronica Moldovan +6 more
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Synthesis of novel photochromic pyrans via palladium-mediated reactions
Beilstein Journal of Organic Chemistry, 2009 Photochromic pyrans for applications in material and life sciences were synthesized via palladium-mediated cyanation, carbonylation and Sonogashira cross-coupling starting from bromo-substituted naphthopyran 1 and benzopyrans 2a/b.
Christoph Böttcher +7 more
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In Vitro and In Silico Evaluation of Cladophora sp. as an Anti-Inflammatory Agent via COX-2 (Cyclooxygenase-2) Inhibition [PDF]
BIO Web of ConferencesCladophora sp. is known to contain chemical constituents with pharmacological properties. The secondary metabolites present in Cladophora sp. include alkaloids, phenolic compounds, saponins, and terpenoids, and it has been reported to exhibit anti ...
Bintari Yoni Rina, Kusumawati Shinta
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