175205-58-0Relevant academic research and scientific papers
A facile synthesis of ethyl-2-methyl-5H-chromeno[3,4-c]pyridine-1- carboxylates
Ramadas,Krupadanam, G.L. David
, p. 1103 - 1114 (2000)
4-Chloro-2H-3-chromene carbaldehydes (2a-i) on reaction with ethyl-3- aminocrotonate 3 gives ethyl-2-methyl-5H-chromeno[3,4-c]pyridine-1- carboxylates 4a-i in good yields.
Synthesis and antimicrobial activity of 2-(4-phenyl-2h-chromen-3-yl)-1h-benzo[d]imidazole
DASARI, RAMACHANDRAIAH,THALARI, GANGADHAR,YERRABELLY, JAYAPRAKASH RAO,CHITNENI, PRASAD RAO
, p. 1723 - 1728 (2021/07/31)
A new series of 4-phenyl-2H-chromene-3-benzimidazoles (8a-o) were synthesized by the condensation of 4-phenyl-2H-chromene-3- carbaldehyde with o-phenylene diamines. The products were purified through column chromatography and structures of these compounds were characterized by IR, 1H & 13C NMR and mass spectral data. All the final compounds were screened for their antimicrobial activity and their efficacy were matched with ciprofloxacin. Five compounds (8b, 8d, 8i, 8l and 8o) were found to be most effective compounds of this series and with activities improved than ciprofloxacin under the tested conditions.
Design, Synthesis, and Antimicrobial Activity of (E)-4-Phenyl-2H-chromene-3-carbaldehyde O-[(1-Phenyl-1H-1,2,3-triazol-4-yl)methyl]oxime Derivatives
Chittneni, P. Rao,Dasari, R.,Thalari, G.,Yerrabelly, J. Rao
, p. 1519 - 1532 (2021/10/26)
Abstract: A new series of 1,4-disubstituted 1,2,3-triazole derivatives tethered to a2H-chromene scaffold have beensynthesized via a click reaction. The synthesized chromene–triazole conjugateswere screened for their antibacterial activity against E. coli, S. aureus, P. aeruginosa and B.subtilis, as well as for antifungal activity against A. niger and C. albicans. Among the 17 synthesized compounds, 6 derivativesshowed the best antimicrobial activity. Molecular docking studies of the titlecompounds with carotenoid dehydrosqualene synthase (PDB: 2ZCS) revealed dockingscores within the range 98.241–91.488 against 106.573 for the reference ligandCiprofloxacin and with lanosterol 14α-demethylase (CYP51; PDB ID: 5V5Z),103.672–96.917 against 110.839 for the reference ligand Voriconazole.
Synthesis and anti-inflammatory activity of 2-oxo-2H-chromenyl and 2H-chromenyl-5-oxo-2,5-dihydrofuran-3-carboxylates
Bhimapaka, China Raju,Karri, Shailaja,Kuncha, Madhusudana,Kurma, Siva Hariprasad,Sistla, Ramakrishna
, (2020/06/22)
Cycloaddition reaction of 4-chloro-2-oxo-2H-chromene-3-carbaldehydes (3a-g) and 4-chloro-2H-chromene-3-carbaldehydes (7a-h) with activated alkynes (4a-b) provided the 2-oxo-2H-chromenyl-5-oxo-2,5-dihydrofuran-3-carboxylates (5a-n) and 2H-chromenyl-5-oxo-2,5-dihydrofuran-3-carboxylates (8a-p). All the prepared compounds were screened for anti-inflammatory activity. In vitro anti-inflammatory activity data demonstrated that the compounds 5g, 5i, 5k-l and 8f are effective among the tested compounds against TNF-α (1.108 ± 0.002, 0.423 ± 0.022, 0.047 ± 0.001, 0.070 ± 0.002 and 0.142 ± 0.001 μM) in comparison with standard compound Prednisolone (0.033 ± 0.002 μM). Based on in vitro results, three compounds (5i, 5k and 8f) have been selected for in vivo experiments and these compounds are identified as better compounds with respect to anti-inflammatory activity in LPS induced mice model. Compound 5i was identified as potent and showed significant reduction in TNF-α and IL-6.
Phosphorus-chlorine synergistic chromene flame retardant and preparation method thereof
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Paragraph 0044-0046, (2017/08/29)
The invention discloses a phosphorus-chlorine synergistic chromene flame retardant shown in formula I and a preparation method thereof. Two functional structural units, i.e. chromene and a phosphaphenanthrene group, are effectively mixed, the preparation method is simple in process and suitable for industrial production, a novel phosphaphenanthrene functionalized phosphorus-chlorine synergistic chromene flame retardant is formed, is high in char forming property, char yield, phosphorus-chlorine synergistic flame retardant efficiency, thermal stability and material processibility, and can be used for the technical field of high polymer materials such as epoxy resin, polyester and polyurethane, and the molecular structure contains two flame retardant elements phosphorus and chlorine; the research fields of chromene compounds are expanded.
Synthesis, characterization, and antimicrobial activity of novel substituted 2H-chromenyl acrylates
Subhashini,Ravi,Cherupally,China Raju,Reddy,Bee
, p. 2900 - 2905 (2017/03/22)
The present study deals with conventional Witting olefination of 2H-chromene-3-carbaldehydes with stabilized ylide in the presence of dichloromethane to afford (2E)-ethyl-3-(4-chloro-2H-chromen-3-yl) acrylate derivatives. All the products were found to have E-geometry at C=C bond. The synthesized compounds were characterized by spectral data such as IR, 1H NMR and MS. Compounds were screened for antimicrobial activity against strains of gram positive, gram negative bacterial and fungal strains. All compounds showed good antibacterial and antifungal activity.
4H-Thieno[3,2-c]chromene based inhibitors of Notum Pectinacetylesterase
Han, Qiang,Pabba, Praveen K.,Barbosa, Joseph,Mabon, Ross,Healy, Jason P.,Gardyan, Michael W.,Terranova, Kristen M.,Brommage, Robert,Thompson, Andrea Y.,Schmidt, James M.,Wilson, Alan G.E.,Xu, Xiaolian,Tarver, James E.,Carson, Kenneth G.
, p. 1184 - 1187 (2016/02/23)
A group of small molecule thienochromenes inhibitors of Notum Pectinacetylesterase are described. We developed SAR on three series based on carbon, oxygen and sulfur replacement of the 5-position. In each series, highly potent Notum Pectinacetylesterase inhibitors were identified.
Synthesis of Pyrazolo[1,5-a]pyrimido[4,3-d]benzopyrans and 2-Pyrazolo [1,5-a]pyrimidinylphenols from the reaction of 5(3)-amino pyrazoles
Jagath Reddy,Latha,Pallavi,Srinivasa Rao,Khalilullah
, p. 453 - 456 (2007/10/03)
A number of Pyrazolo[1,5-a]pyrimido[4,3-d]benzopyrans(4a-m) and 2-(Pyrazolo[1,5-a]pyrimidinyl)phenols (7a-k) have been prepared from the reaction of 5(3)-aminopyrazoles 3.
