Topic
Benzopyran
About: Benzopyran is a research topic. Over the lifetime, 1889 publications have been published within this topic receiving 15235 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, the authors adopted the condensation reaction between the aldehyde group in spiro[2H-benzopyran-2,2′-indoline] and the ethylene diamine in β-cyclodextrins to synthesize 1,3,3-trimethyl-6′-mono-(6-deoxy-ethylenediimine-β-cyclodesxtrin)-spiro[ 2,2,4]-indoline, which showed the capacity of dual molecular recognition of a drug, ribavirin
Abstract: In this study, we adopted the condensation reaction between the aldehyde group in spiro[2H-benzopyran-2,2′-indoline] and the ethylene diamine in β-cyclodextrins to synthesize 1,3,3-trimethyl-6′-mono-(6-deoxy-ethylenediimine-β-cyclodextrin)-spiro[2H-benzopyran-2,2′-indoline] (β-CD-SPBI). The structure of the target compound was characterized by elemental analysis, NMR and IR spectroscopy. The UV–Vis and fluorescence spectroscopy were investigated in different solvents. The preliminary study of its molecular recognition was also conducted. The results indicated that β-CD-SPBI existed as two structural isomers, both of which showed significant fluorescent characteristics and β-CD-SPBI could showed the capacity of dual molecular recognition of a drug, ribavirin.
1 citations
Patent•
08 Jan 1976
TL;DR: In this paper, a benzopyran derivative of the formula was proposed, where R is a loweralkyl group and R1 is H or an alkyl group of up to 20 carbon atoms.
Abstract: TRI-CYCLIC COMPOUNDS DERIVED FROM PHLOROGLUCINOL Abstract of the Disclosure This invention provides novel benzopyran derivatives of the formula wherein R is a loweralkyl group and R1 is H or an alkyl group of up to 20 carbon atoms. The compounds of this invention are useful as antihypertensive agents.
1 citations
Patent•
13 Dec 1988TL;DR: In this article, the authors describe several intermediates useful in preparing thromboxane A2 inhibiting (±)7-[3α]-1-[[phenylamino)-thioxomethyl]hydrazono]ethyl]-1.2.
Abstract: This invention relates to several intermediates useful in preparing thromboxane A2 inhibiting (±)7-[3α-[1-[[(phenylamino)-thioxomethyl]hydrazono]ethyl]-1.alpha., 4α-bicyclo[2.2.1]hept-2β-yl]-heptenoic acids and useful derivatives thereof from (±)octahydro-1α-methyl-3aα, 7aα-4α,7α-methano-2H-inden-2-ones.
1 citations
Journal Article•
1 citations
Patent•
26 Jul 1979
TL;DR: New heterocyclic dyes are of formula (I) In (I), R2 is H, alkyl, alkenyl, aralkyl or a 2-3C alkylene gp linked to ring A in a o-posn; R1 is as R2, cycloalkyl, or aryl; R 1 and R 2 may also be a 5-7 member alkyene gp opt interrupted with NH, O or S; R 3 is alkyyl, aryyl, and R 4 is h, al
Abstract: New heterocyclic dyes are of formula (I) In (I) R2 is H, alkyl, alkenyl, aralkyl or a 2-3C alkylene gp linked to ring A in a o-posn; R1 is as R2, cycloalkyl or aryl; R1 and R2 may also be a 5-7 member alkylene gp opt interrupted with NH, O or S; R3 is H, alkyl, arylkyl, aryl, alkoxy, halogen, CN, COOH, alkoxycarbonyl, alkylsulphonyl arylsulphonyl; R4 is H, alkyl, aryl, halogen, OH, alkoxy, NO2, CH, COOH, alkoxycarbonyl, formyl, carbamoyl, ureido, amidino, amidinium, alkyl- or aryl-sulphonyl, SO3H or a heterocyclic system attached through a ring N atom; Z is o, s or NH; R is H, alkyl, alkenyl, aralkyl, aryl or acyl; p and q are 0 or 1, but not both 0; G is the remainder of a carbon- or hetero-cycli gp The cyclic and acyclic gps may contain other usual non-ionic substits, COOH or SO3H, and are opt quaternised Used as acid, cationic or dispersion dyes for natural and synthetic fibres, and as fluorescent and laser dyes, giving yellow to violet shades Also as transfer-printing dyes when free from sublimation-resistant gps Clear, brilliant shades with good properties in use are obtd
1 citations