Topic
Benzopyran
About: Benzopyran is a research topic. Over the lifetime, 1889 publications have been published within this topic receiving 15235 citations.
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Patent•
26 Sep 1972
TL;DR: In this paper, the authors described 4-oxo-4H-1-benzopyran and 4oxo -4H 1-thiabenzopyrans having a group -CONROH in the 2-position, R representing hydrogen, alkyl, phenyl or phenylalkyl, provided that the compounds are not of formula XXXI.
Abstract: There are described 4-oxo-4H-1-benzopyran and 4-oxo-4H-1-thiabenzopyran compounds having a group -CONROH in the 2-position, R representing hydrogen, alkyl, phenyl or phenylalkyl, provided that the compounds are not of formula XXXI, in which Ra is hydrogen or chloride, and pharmaceutically acceptable derivatives thereof. The compounds are indicated for use in the treatment of asthma.
3 citations
TL;DR: The title ester 6-(1,1-dimethyl-2-propenyl)-2-oxo-2H-furo[2,3-h][1]benzopyran-5-yl acetate, C 18 H 16 O 5 }, is a furanocoumarin this article.
Abstract: The title ester {6-(1,1-dimethyl-2-propenyl)-2-oxo-2H-furo[2,3-h][1]benzopyran-5-yl acetate, C 18 H 16 O 5 }, is a furanocoumarin. The pyrone, phenyl and furan rings are planar. Molecules are held together by C-H...O hydrogen bonds.
3 citations
TL;DR: A comprehensive survey of the synthesis and chemistry of the title nitrile covering the literature published during 2005-2014 can be found in this paper, where a review article is designed to complement an earlier one (J. Heterocycl. Chem. 2005, 42, 1035-1042).
Abstract: The review article, primarily designed to complement an earlier one (J. Heterocycl. Chem. 2005, 42, 1035-1042), gives a comprehensive survey of the synthesis and chemistry of the title nitrile covering the literature published during 2005-2014.
3 citations
Patent•
10 Jan 1989
TL;DR: In this article, a compound of formula I [R1, R2 are H, halogen, alkyl, alkoxy, trihalomethyl, hydroxyl, amino, and alkylamino] and its salt is used to inhibit the formation of activated oxygen and is used as a prophylactic or remedy for radiation injury.
Abstract: NEW MATERIAL:A compound of formula I [R1, R2 are H, halogen, alkyl, alkoxy, trihalomethyl, hydroxyl, amino, alkylamino, or incorporate to form alkylenedioxy; n is 1-5; R is H, alkyl, aralkyl; R4 is formula IV (m is 1-5; lis 1, 2; R5 is H, alkyl, aralkyl, diphenylalkyl), diphenylalkyl] and its salt. EXAMPLE:3,4-Dihydro-N-(3,3-diphenylpropyl)-1H-2-benzopyran-1-methylamine monomaleate. USE:It has action to inhibit the formation of activated oxygen and is used as a prophylactic or remedy for radiation injury. PREPARATION:For example, a compound of formula II is allowed to react with a compound of the formula: XCO-R6 (X is halogen, R6 is formula V) or the formula: O(COR6)2 to form a compound of formula III, which is reduced to give the compound of formula I.
3 citations
3 citations