Results 21 to 30 of about 2,756 (214)
Crystal structure of 2-amino-4-(4-methoxyphenyl)-4H-benzo[g]chromene-3-carbonitrile
Acta Crystallographica Section E: Crystallographic Communications, 2015 In the title compound, C21H16N2O2, the naphthalene fragment is twisted slightly, as indicated by the dihedral angle of 3.2 (2)° between the two six-membered rings. The pendant 4-methoxyphenyl ring makes a dihedral angle of 86.08 (6)° with the central six-
Joel T. Mague +4 more
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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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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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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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Differential effects of endothelin‐1 on the vasorelaxant properties of benzopyran and non‐benzopyran potassium channel openers [PDF]
British Journal of Pharmacology, 1992 . The effects of endothelin‐1 (ET‐1) on the vasorelaxant properties of structurally different potassium channel openers (PCOs), BRL‐38227, Ro 31–6930, SDZ PCO 400, EMD‐52692, RP‐49356 and pinacidil, were studied. . All PCOs evoked concentration‐related relaxations of ET‐1 (10 nm) or KCl (20 mm) contracted rat isolated aortic rings denuded of ...
K, Lawson +5 more
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Antifeedant Activity of Benzopyrans from Melicope latifolia
, 2020 Two benzopyrans, evodionol (1), and evodion (2) were isolated from the stem bark of Melicope latifolia. The structure of both compounds was identified based on 1D and 2D NMR, UV, and IR spectroscopy.
Tanjung, Mulyadi
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, 2016 Gold(I)-Catalyzed Enantioselective Synthesis of Benzopyrans via Rearrangement of Allylic Oxonium ...
Iain D. G. Watson (1950703) +3 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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Metal triflates catalyzed efficient synthesis of 3,4-dihydro-2H-1-benzopyrans [PDF]
, 2002 Ytterbium triflate efficiently catalyzes an unusual cyclization of o-hydroxybenzaldehydes with 2,3-dihydrofuran and 3,4-dihydro-2H-pyran in the presence of trimethyl orthoformate at ambient temperature to afford a new class of compounds, furo- and pyrano[
Kunwar, Ajit C. +6 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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