Results 191 to 200 of about 10,732 (222)

Chromenes from Ageratum conyzoides

Phytochemistry, 1991
Abstract-Analysis of the aerial part of Ayeratum conyzoides afforded 11 chromenes, sitosterol, (+)-sesamin and caryophyllene oxide. One chromene is new and eight of the others were obtained for the first time from this species. The ‘C NMR spectral data for four of the chromenes have not been published before.
Antonio G. González, Zahira E. Aguiar, Teresa A. Grillo, Javier G. Luis, Augusto Rivera, Jairo Calle   +5 more
openaire   +1 more source

Natural and Synthetic Chromenes, Fused Chromenes, and Versatility of Dihydrobenzo[h]chromenes in Organic Synthesis

Chemical Reviews, 2014
Ramendra, Pratap, Vishnu Ji, Ram
openaire   +2 more sources

Chromene-chromene Schiff base as a fluorescent chemosensor for Th4+ and its application in bioimaging of Caenorhabditis elegans

Methods
The manuscript presents the synthesis of a new di-chromene Schiff base (COM-CH) by combining 7-(diethylamino)-2-oxo-2H-chromene-3-carbohydrazide and 4-oxo-4H-chromene-3-carbaldehyde, and its characterization using various analytical techniques. The probe COM-CH functional group contains a hard donor atom that selectively complexes with Th4+ ions.
Aastha, Dua, Pratiksha, Saini, Shiwani, Goyal, Pravinkumar, Selvam, S K, Ashok Kumar, Govindhan, Thiruppathi, Palanisamy, Sundararaj, Harish K, Sharma, Selva, Kumar Ramasamy   +8 more
openaire   +2 more sources

Synthesis and Biological Evaluation of Chromen-2-One and Chromen-2-Imine Derivatives Bearing Aryldiazenyl Moiety as Expected Antimicrobial Agents

Polycyclic Aromatic Compounds, 2023
Mohamed A Salem, Samir Y Abbas, Mohamed H Helal   +2 more
exaly  

A New Antifungal Chromene and a Related Di-chromene from Hypericum revolutum

Planta Medica, 1986
Décosterd L, Stoeckli-Evans H, Msonthi JD, Hostettmann K   +3 more
openaire   +3 more sources

Antibacterial and Antiviral Activities of 1,3,4-Oxadiazole Thioether 4H-Chromen-4-one Derivatives

Journal of Agricultural and Food Chemistry, 2021
Feng Peng, Jinsong Yang, Liwei Liu
exaly  

Visible Light‐Promoted Selenylation/Cyclization of Enaminones toward the Formation of 3‐Selanyl‐4H‐Chromen‐4‐Ones

Advanced Synthesis and Catalysis, 2021
Yan-Yan Chen, Yan-Li Xu
exaly  

The Reaction of Dichlorocarbene with 2,3-Chromene and 3,4-Chromene

Journal of the American Chemical Society, 1962
William E. Parham, Laurence D. Huestis
openaire   +1 more source

Aqueous Media Synthesis of Pyrano[3,2-c]chromen Derivatives Using Magnesium Oxide Nanoparticles as a Recyclable Catalyst

Polycyclic Aromatic Compounds, 2021
Seyyed Jalāl Roudbaraki, Majid Ghashang   +1 more
exaly  

Chromene compound

Smart Materials Bulletin, 2002
openaire   +1 more source