Results 11 to 20 of about 2,171 (174)
Synthetic Anthocyanidins from Natural Benzopyrans
Natural Product Communications, 2016 A hydride abstraction strategy can be used to make anthocyanidins and isoflavylium salts from benzopyrans in good yields.
George A. Kraus, Ivan M. Geraskin
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An overview of structure-based activity outcomes of pyran derivatives against Alzheimer’s disease
Saudi Pharmaceutical Journal, 2023 Pyran is a heterocyclic group containing oxygen that possesses a variety of pharmacological effects. Pyran is also one of the most prevalent structural subunits in natural products, such as xanthones, coumarins, flavonoids, benzopyrans, etc. Additionally
Faisal A. Almalki
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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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Secondary Metabolite Production by the Basidiomycete, , under Different Culture Conditions
Natural Product Communications, 2012 The basidiomycete Lentinus strigellus was cultivated in three different culture media and the secondary metabolites produced under different culture conditions were isolated and identified. When cultivated in a liquid medium with peptone, L.
Bartholomeu A. Barros-Filho +4 more
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Molecules, 2021 On the basis of the finding that various aminoalkyl-substituted chromene and chromane derivatives possess strong and highly selective in vitro bioactivity against Plasmodium falciparum, the pathogen responsible for tropical malaria, we performed a ...
Friederike M. Wunsch +3 more
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Tricyclic flavonoids with 1,3-dithiolium substructure
Beilstein Journal of Organic Chemistry, 2012 The synthesis of new 3-dithiocarbamic flavonoids has been accomplished by the reaction of the corresponding 2-hydroxyaryl dithiocarbamates with aminals. These flavonoids were obtained as a mixture of diastereoisomers, the anti isomer being the major one.
Lucian G. Bahrin +2 more
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One-Pot Pyrrolidine-Catalyzed Synthesis of Benzopyrans, Benzothiopyranes, and Dihydroquinolidines
CHIMIA, 2007 A simple catalytic racemic synthesis of benzopyranes, benzothiopyranes and 1,2-dihydroquinolines is presented. The organocatalytic domino reactions between 2-heteroatom substituted aldehyde derivatives and ?,?-unsaturated aldehydes or ...
Ismail Ibrahem +4 more
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BMC Chemistry, 2021 Background The nano-sized particles enhance the exposed surface area of the active part of the catalyst, thereby increasing the contact between precursors and catalyst considerably. In this study, nano-SiO2/1,5-diazabicyclo[4.3.0]non-5-en was synthesized,
Maryam Mehravar +3 more
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Foods, 2023 China Xihu Longjing tea is famous for its good flavor and quality. However, information on its related metabolites, except for flavonoids, is largely deficient. Different processing methods for China Xihu Longjing tea fixing—by machines at both the first
Hongchun Cui +6 more
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MoleculesThe antioxidant properties of novel diiodo-substituted 3-dithiocarbamic flavanones were investigated. The three frameworks that proved to be the most active ones in our previous studies were selected.
Mihail Lucian Birsa +1 more
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