Results 91 to 100 of about 10,895 (224)
Acta Crystallographica Section E, 2012 In the title compound, C15H10O2, a 3-phenyl derivative of the coumarin (also known as 2H-chromen-2-one or 2H-1-benzopyran-2-one) scaffold, the Cp—Cp—Cc—Cc torsion angle between the coumarin (c) ring system and the phenyl (p)
Maria J. Matos +2 more
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, 1999 Reaction of 3,4-dibromo-2,2,6,8-tetramethyl-2H-[1]benzopyran with either organolithium reagents or magnesium generates the novel strained alkyne, 3,4-didehydro-2H-[1]benzopyran.
Hursthouse, Michael B. +5 more
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, 2019 Benzopyran and benzodihydropyran (chromane) nuclei are the core structure of many natural products, in particular flavonoids. Many compounds possessing this structure are nutraceuticals, pharmaceutical nutrients.
Renato Dalpozzo, Raffaella Mancuso
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Synthesis of benzofuro-4-anilino-2H-1-benzopyran-2-one and benzofuro-pyrano -2H-1-benzopyran-2-one
, 2004 624-628The title compounds are synthesized from the corresponding 4-hydroxy-benzopyran-2[H]-ones 5a,b .2, 4-Dihydroxyacetophenone 1a,b on condensation with 2-bromocyclohexanone, followed by linear cyclisation and then on reaction with diethyl ...
Soman, Shubhangi S
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Benzopyran-chalcone derivatives as potential anti-ovarian cancer agents via DNA damage induction
Results in ChemistryOvarian cancer (OC) is one of the most lethal gynecologic malignancies affecting women worldwide, with chemotherapy remaining the primary clinical treatment.
Yihang Wu +7 more
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, 2011 Different benzopyran and 3-substituted coumarin derivatives were synthesized by a green and practical procedure in the presence of catalytic amount of Brønsted acid ionic liquid (BAIL) [(CH2)4SO3HMIM][HSO4] in water.KEY WORDS: Benzopyran derivatives, 3 ...
Karimi, Narges +4 more
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Acta Crystallographica Section E, 2009 The title compound (systematic name: 4-{[(2E)-5-hydroxy-3,7-dimethylocta-2,6-dien-1-yl]oxy}-7H-furo[3,2-g][1]benzopyran-7-one), C21H22O5, is a known furanocoumarin, which was isolated from the Chinese herbal product Radix seu Rhizoma Notopterygii.
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, 2003 Synthesis of 2,2-dimethyl-4-formyl-7-methoxy-(2H)-1-benzopyran has been achieved by a three step reaction sequence, wherein the key step has been the preparation of 7-hydroxy-2,2,4-trimethyl-(2H)-1-benzopyran by a novel condensation reaction between ...
Khan, K. R. +2 more
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, 2021 The clean synthesis of 6-cyano-2,2-dimethyl-2- H -1-benzopyran epoxide starting from 3-methyl-2-butenal is reported using recyclable catalysts. H₄PMo₁₁VO₄₀ (PMo₁₁V) and (PyH)₃HPMo₁₁VO₄₀ (Py₃ –PMo₁₁V) Keggin-type heteropolyacids were used to synthesize 6 ...
Vázquez, Patricia Graciela +6 more
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Bulletin of the Chemical Society of Ethiopia, 2011 Different benzopyran and 3-substituted coumarin derivatives were synthesized by a green and practical procedure in the presence of catalytic amount of Brønsted acid ionic liquid (BAIL) [(CH2)4SO3HMIM][HSO4] in water.
Majid M. Heravi +4 more
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