Results 101 to 110 of about 16,857 (213)
Molecules, 2010 During a synthesis of coumarins to obtain new candidates for treating Alzheimer’s Disease (AD), an unusual rearrangement of a benzopyran group to a benzofuran group occurred, offering a novel synthesis pathway of these benzofuran derivatives.
Ling-Yi Kong +4 more
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6-Chloro-3-(2,2-dibromoacetyl)-2H-chromen-2-one
IUCrData, 2017 In the title compound, C11H5Br2ClO3, the benzopyran ring system is essentially planar (r.m.s. deviation = 0.023 Å) and one of the bromine atoms is almost coplanar with it [deviation = 0.091 (1) Å].
Kaviraj Yarbagi +4 more
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Synthesis of Isochromanes and Isothiochromanes Bearing Fluorinated One-Carbon Units via Intramolecular Cyclizations of ortho-Substituted α-(Trifluoromethyl)styrenes [PDF]
, 2009 α-(Trifluoromethyl)styrenes bearing a nucleophilic oxygen or sulfur atom tethered by a methylene or methyne unit at the ortho carbon were prepared by the coupling reaction of 2-bromo-3,3,3-trifluoropropene with aryl iodides via (3,3,3-trifluoroprop-1-en ...
Hattori Masahiro +3 more
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Journal of Pharmacological Sciences, 2006 .: Mechanisms for the atria-specific action potential-prolonging action of NIP-142 ((3R*,4S*)-4-cyclopropylamino-3,4-dihydro-2,2-dimethyl-6-(4-methoxyphenylacetylamino)-7-nitro-2H-1-benzopyran-3-ol), a benzopyran compound that terminates experimental ...
Matsuda Tomoyuki +10 more
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Synthesis and transformation of halochromones [PDF]
, 2014 Chromones (4H-1-benzopyran-4-ones) are one of the most abundant groups of naturally occurring oxygen containing heterocyclic compounds possessing a benzo-γ-pyrone framework, 1a.
Santos, Clementina M.M. +2 more
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NATURAL COVALENTLY COMBINED DERIVATIVES OF 2H-1-BENZOPYRAN-2-ONE
Разработка и регистрация лекарственных средств, 2019 Coumarins, known as 2Н-1-benzopyran-2-one (or 2H-chromen-2-one), are present in remarkable amounts in plants, also have been detected in microorganisms and animal sources.
A. Z. Abyshev, C. B. Nguyen
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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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Stereochemistry of Two Hydroxybiflavanonols from Garcinia cola Nuts [PDF]
, 1987 Fischer, R., Madubunyi, I., Scheer, Hugo
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Ultrasonicated synthesis of 1-(2-hydroxyaryl)-3-(pyrrolidin-1-yl)-prop-2-en-1-ones and their antimicrobial screening [PDF]
, 2009 : A facile synthesis of title compounds has been carried out under ultrasound irradiation. The main advantages of the present procedure are shorter reaction time and higher yield.
Bhausaheb Karale +3 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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