• Benzopyran derivatives (chromones and flavones) are potentially useful anti-inflammatory agents due to their ability to inhibit protein kinase dependant signal transduction pathways. (sigmaaldrich.com)
  • Furthermore, some natural benzopyran derivatives showed inhibitory activity of prostaglandin E2 (PGE2) production. (sigmaaldrich.com)
  • Benzopyran derivatives are also an attractive template for the identification of potential anticancer agents. (sigmaaldrich.com)
  • Two new benzopyran derivatives, named xiamenmycin C ( 1 ) and D ( 2 ), were isolated from the crude extracts of a selected Str-Rif double mutant (M6) of M1-94P. (mdpi.com)
  • This paper aims to synthesis some novel of benzopyran derivatives using high efficient, solvent free, excellent yield, one pot multicomponent reaction via microwave technique. (springer.com)
  • There are a lot of reported methods for preparation of 4-H-chromene (benzopyran) derivatives via multi-component reaction including of catalyst such as acetic acid, and organo-catalyst. (springer.com)
  • cerasoides several prenylated benzopyran derivatives (Zafra-Polo et al. (thefreedictionary.com)
  • The present invention relates to substituted benzopyran derivatives,stereoisomers, and pharmaceutical acceptable salts thereof and processes for the preparation of the same. (allindianpatents.com)
  • Therefore, these results can be applied in the identification of benzopyran derivatives in a variety of biological samples. (nih.gov)
  • 19 ] employ the microwave radiation in the synthesis of benzopyrans from substituted acetophenones and keto compounds mediated by Triton-B under solvent-free conditions and mild condition in one pot reaction given excellent yield. (springer.com)
  • 7-Hydroxy-2-methyl-4-oxo-4H-1-benzopyran-5-acetic acid, also known as 5-(carboxymethyl)-7-hydroxy-2-methylchromone, belongs to the class of organic compounds known as chromones. (hmdb.ca)
  • Chromones are compounds containing a benzopyran-4-one moiety. (hmdb.ca)
  • These studies provide novel insights into gas-phase dissociation for natural benzopyran compounds, indicating how reactivity is correlated to the intrinsic acid-base equilibrium and structural aspects, including the substitution pattern on the aromatic moiety. (nih.gov)
  • 2 nmol/ml which signifies that the basic moiety, benzopyran is active in the lipolysis assay. (thefreedictionary.com)
  • The benzopyran moiety is perfectly planar. (ias.ac.in)
  • There are two isomers of benzopyran that vary by the orientation of the fusion of the two rings compared to the oxygen, resulting in 1-benzopyran (chromene) and 2-benzopyran (isochromene)-the number denotes where the oxygen atom is located by standard naphthalene-like nomenclature. (wikipedia.org)
  • Pterocarpans, a special kind of isoflavonoids owing two contiguous benzofuran and benzopyran rings, are also known to display several biological activities (Militao et al. (thefreedictionary.com)
  • The novel benzopyran class of selective cyclooxygenase-2 inhibitors. (rcsb.org)
  • Esters and amides of 6-(chloromethyl)-2-oxo-2H-1-benzopyran-3-carboxylic acid as inhibitors of alpha-chymotrypsin: Significance of the «aromatic» nature of the novel ester-type coumarin for strong inhibitory activity. (unamur.be)
  • In addition, chromone (a derivative of benzopyran with a substituted keto group on the pyran ring), dinorxanthane sesquiterpene, and other substances isolated from T. (thefreedictionary.com)
  • 19. The photochromic article of claim 18 wherein the organic photochromic substance is selected from the group consisting of spiro(indoline)naphthoxazines, spiro(indoline)benzoxazines, benzopyrans, naphthopyrans, chromenes, organo-metal dithizonates, fulgides and fulgimides and mixtures of such organic photochromic substances. (google.com)
  • Time-resolved resonance Raman spectra and time-resolved absorption spectra of transient species of photochromic 6-nitro-1′,3′,3′-trimethylspiro[2H-1-benzopyran-2,2′-indoline] (6-nitroBIPS) generated by irradiation with UV light in cyclohexane have been measured. (elsevier.com)
  • The benzopyran compound obtained by cultivating a mangrove-derived strain, Streptomyces xiamenensis strain 318, shows multiple biological effects, including anti-fibrotic and anti-hypertrophic scar properties. (mdpi.com)
  • Four new acetophenone di- C -glycosides, pteleifolols A-D ( 1 - 4 ) and a new dimeric benzopyran, pteleifolol E ( 5 ), were isolated from the leaves of Melicope pteleifolia . (springer.com)
  • To increase the diversity in the structures of the available benzopyrans, by means of biosynthesis, the strain was screened for spontaneous rifampicin resistance (Rif), and a mutated rpsL gene to confer streptomycin resistance (Str), was introduced into the S. xiamenensis strain M1-94P that originated from deep-sea sediments. (mdpi.com)
  • Polyalthidin: new prenylated benzopyran inhibitor of the mammalian mitochondrial respiratory chain. (thefreedictionary.com)
  • Benzopyran is a polycyclic organic compound that results from the fusion of a benzene ring to a heterocyclic pyran ring. (wikipedia.org)
  • Benzopyrans (also called chromenes), bicyclic heterocyclic systems consisting of a benzene ring fused to a heterocyclic pyran ring, constitute a privileged structure in medicinal chemistry. (sigmaaldrich.com)
  • Supercritical fluid extraction and high performance liquid chromatographic determination of benzopyrans and phloroglucinol derivative in Hypericum polyanthemum. (nextbio.com)
  • Commonly, benzopyran is encountered in the reduced state, in which it is partially saturated with one hydrogen atom, introducing a tetrahedral CH2 group in the pyran ring. (wikipedia.org)
  • Thunberginol A and B dihydroisocoumarins Hydrangenol Phyllodulcin Thunberginol C, D, E and G The derivative 3-acetyl-3,4-dihydro-5,6-dimethoxy-1H-2-benzopyran-1-one can be found in Huáng bǎi (Phellodendron chinense), one of the fifty fundamental herbs of traditional Chinese medicine. (wikipedia.org)
  • Chromone is a bicyclic compound consisting of a 1-benzopyran, which bears a ketone group at the 4-position. (hmdb.ca)
  • 5 = 5-hydroxy-6-isobutyryl-7-methoxy-2,2-dimethyl- benzopyran (HP3)) were eluted with an isocratic mobile phase system consisting of C[H. (thefreedictionary.com)
  • Treatment of the phenolic aldehyde (α′S,2S )-2-(5′-hydroxy-2′-methoxy-α′-methylbenzyloxy)propanal 15 with titanium tetraisopropoxide followed by ultrasonication led to its completely diastereoselective cyclisation in high yield to afford (1S,3S,4R)-3,4-dihydro-1,3-dimethyl-8-methoxy-2-benzopyran-4,5-diol 18, which was characterised as its more stable 4,5-diacetate 19. (edu.au)
  • Oxidative dealkylation of the diol 18 with silver(II) oxide afforded (1S,3S,4R)-3,4-dihydro-1,3-dimethyl-4-hydroxy-2-benzopyran-5,8-quinone 2 in high yield, while the epimeric 1R quinone 40 was similarly obtained from diol 21. (edu.au)
  • The effects of 1 α -hydroxycholecalciferol [1 α (OH)D 3 ] and 7-isopropoxy-3-phenyl-4H-1-benzopyran-4-one [ipriflavone (IP)] on the serum concentrations of parathyroid hormone (PTH) and calcitonin (CTN) were studied in patients with adult-onset diabetes (NIDDM). (springer.com)
  • Some benzopyrans have shown anticancerous activity in vitro. (wikipedia.org)
  • Kamperdick C, Van NH, Sung TV, Adam G (1997) Benzopyrans from Melicope ptelefolia leaves. (springer.com)