Results 71 to 80 of about 2,815,679 (232)
Cereal Chemistry, EarlyView.ABSTRACT Background and Objectives Asian salted noodles (ASN) are popular in East and Southeast Asia and in parts of Europe and the Americas. However, ASN are deficient in certain nutrients (e.g., vitamins, minerals, and dietary fiber) and bioactive compounds.
Gia Ngoc Lam, Fan Zhu
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Chemical detections of active compounds in Melilotus indica extracts
مجلة مركز بحوث التقنيات الاحيائية, 2009 The crude extracts of the leaves of melilotus indica which collected in two dates (midFebruary, mid March) have been prepared by three solvents (Distilled water, ethanol 80% and chloroform) and three buffer solutions (Sodium acetate buffer, Sodium ...
Faisal K. Mutasher +2 more
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Photosensitizing Au(I) Catalysis With Coumarins
Chemistry – A European Journal, EarlyView.A Au(I) complex with a tethered coumarin fragment was synthesized and characterized by UV‐vis and emission spectroscopy. Its ability to facilitate photo‐driven cross‐coupling reactions through single‐electron and energy transfer events was evaluated. ABSTRACT Gold catalysis shows versatility in a wide range of challenging transformations, wherein light‐
Liliana Capulín Flores +2 more
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BMC Plant BiologyBackground Scopoletin and umbelliferone belong to coumarins, which are plant specialized metabolites with potent and wide biological activities, the accumulation of which is induced by various environmental stresses.
Anna Ihnatowicz +7 more
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Synthesis of (Z)-Cinnamate Derivatives via Visible-Light-Driven E-to-Z Isomerization
SynOpen, 2019 (Z)-Cinnamate derivatives are prevalent in natural bioactive products and in organic synthesis. Herein, we report a practical approach toward the efficient synthesis of (Z)-cinnamate derivatives via visible-light-driven isomerization.
Penghua Shu +8 more
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π‐Extended Salphen Scaffolds Enable CO2 Electroreduction and Singlet Oxygen Generation
Chemistry – A European Journal, EarlyView.New family of π‐extended salen ligands bearing phenylene bridge and tunable phenyl‐based substituents, and their corresponding boron difluoride complexes. Thanks to the extended π‐delocalization over the molecule, the ligands themselves show promising results in electrochemical CO2 reduction to CO, while the complexes act as efficient photosensitizers ...
Vincenzo Langellotti +10 more
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Chemistry – A European Journal, EarlyView.A new silver‐catalyzed H/D exchange reaction was developed for the labelling of quinones and related compounds. Both homogeneous and heterogeneous catalytic processes were implemented using heavy water as a simple deuterium source. The corresponding deuterated compounds were obtained with high isotopic enrichment through a practical method that opens ...
Joyce C. de Oliveira +7 more
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A Straightforward and Efficient Approach to the Synthesis of 3-Cyano-Coumarine Derivatives
Chemistry ProceedingsOxygen heterocycles represent a significant category of organic molecules that are abundant in nature and important in scientific research due to their use in diverse applications across various fields.
Asmaa Kebaili +5 more
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Journal of Chemistry, 2019 Multicomponent cyclocondensation of hydrazine derivatives, ethyl acetoacetate, aromatic aldehydes, and 4-hydroxycoumarin has been reported. The optimization details of the developed novel protocol are recorded. The novel procedure features short reaction
Hamida Jelali +6 more
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Chemistry – A European Journal, EarlyView.This work presents the synthesis and characterization of chiral dipicolinamide push–pull fluorophores. While possessing similar photophysical properties in solution, their solvent‐annealed thin films exhibit unexpected, nonreciprocal chiroptical activity in both absorption and emission, including a complete inversion of the chiroptical profile upon ...
Filippo Petri +3 more
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