Results 31 to 40 of about 1,749 (157)

The Antifungal Activity of Naphthoquinones: An Integrative Review

Anais da Academia Brasileira de Ciências
Naphthoquinones are the most commonly occurring type of quinones in nature. They are a diverse family of secondary metabolites that occur naturally in plants, lichens and various microorganisms.
DÉBORA O. FUTURO, PATRICIA G. FERREIRA, CAROLINE D. NICOLETTI, LUANA P. BORBA-SANTOS, FERNANDO C. DA SILVA, SONIA ROZENTAL, VITOR FRANCISCO FERREIRA   +6 more
doaj   +1 more source

γ-Fe2O3@HAP-Fe2+ NPs: An Efficient and Eco-Friendly Catalyst for the Synthesis of Xanthene Derivatives in Water [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2018
Efficient and environmentally friendly syntheses of xanthenes derivatives by using γ-Fe2O3@HAP-Fe2+ NPs as a catalyst has been carried out. The catalyst can be readily isolated by using an external magnet and no obvious loss of activity was observed when
Rahim Hosseinzdeh Khanamiri, Esmail Vessally, Gholam Hossein Shahverdizadeh, Mirzaagha Babazadeh, Ladan Edjlali   +4 more
doaj  

An efficient multi-component synthesis of 14-aryl-14H-dibenzo[a,j]xanthene derivatives by AgI nanoparticles

Journal of Saudi Chemical Society, 2015
Recoverable heterogeneous AgI nanoparticles efficiently catalyzed the one-pot synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes via multi-component reaction of aldehydes and 2-naphthol under solvent-free conditions.
Javad Safaei-Ghomi, Mohammad Ali Ghasemzadeh   +1 more
doaj   +1 more source

Optical Spectral Study of Rhodamine Dyes Mixture Solution in Chloroform [PDF]

Engineering and Technology Journal, 2013
The spectral properties (absorption and fluorescence) of laser dyes (Rhodamine6G, Rhodamine 3GO and Rhodamine B) mixture have been studied. This type of laser dye belongs to the Xanthenes family, it has dissolved in chloroform to prepare (1*10-5 M) in ...
Slafa Ismael Ibrahim, Majid Hameed Abdulmajeed   +1 more
doaj   +1 more source

Molecular Cages as Probes in Indicator Displacement Assays: The Case of Scopolamine Detection

Angewandte Chemie, Volume 138, Issue 9, 23 February 2026.
In this research, we show the concept of molecular cages as probes in indicator displacement assays, focusing on scopolamine detection, a drug often used in drug‐facilitated sexual assaults. Drug sensing occurs via the drug‐induced transformation of non‐emissive [Fluorescein2⊂Cage] complex into [Scopolamine⊂Catenane] and highly emissive free ...
Giovanni Montà‐González, Eva Garrido, Estela Climent, Cristian Vicent, Ramón Martínez‐Máñez, Vicente Martí‐Centelles   +5 more
wiley   +2 more sources

Nano-TiCl4.SiO2: A Versatile and Efficient Catalyst for Synthesis of 14-aryl or alkyl-14H-dibenzo[a,j]xanthenes [PDF]

Journal of Nanostructures, 2013
Nano-silica supported titanium tetrachloride (TiCl4.SiO2) was prepared and used as an acid catalyst for the 14-aryl or alkyl-14H-dibenzo[a,,j]xanthenesreaction under solvent-free conditions.
B. F. Mirjalili, A. Bamoniri, L. Zamani
doaj   +1 more source

An Overview of Polyphenols and Color Chemistry in Cocoa

AgriFood: Journal of Agricultural Products for Food, EarlyView.
Cocoa polyphenols have been traditionally known for their beneficial properties in human health. However, less is known about their other impacts on cocoa processing. This review highlights current discoveries in the role of polyphenols in the formation of color in cocoa.
Jasmeet Kaur Khanijou, Mario Wibowo
wiley   +1 more source

Multicomponent synthesis of novel azo-linked 9-Aryl-1H-xanthene-1,8(2H)-diones using ionic liquid [BDBDMIm]HSO4 [PDF]

شیمی کاربردی روز, 2019
The synthesis of ten novel azo dyes derived from 9-Aryl-1H-xanthene-1,8(2H)-dione derivatives from one equivalent of azo-linked salicylaldehydes and two equivalent of dimedone in the presence of 3,3'-(butane-1,4-diyl)bis(1,2-dimethyl-1H-imidazol-3-ium ...
mohammad nikpassand, leila Zare Fekri
doaj   +1 more source

A series of xanthenes inhibiting Rad6 function and Rad6-Rad18 interaction in the PCNA ubiquitination cascade

iScience, 2022
Summary: Ubiquitination of proliferating cell nuclear antigen (PCNA) triggers pathways of DNA damage tolerance, including mutagenic translesion DNA synthesis, and comprises a cascade of reactions involving the E1 ubiquitin-activating enzyme Uba1, the E2 ...
Gabriel Fenteany, Gaurav Sharma, Paras Gaur, Attila Borics, Edit Wéber, Ernő Kiss, Lajos Haracska   +6 more
doaj   +1 more source

Ligand architecture and secondary‐sphere effects in a well‐defined cobalt(IV)–oxo complex

Bulletin of the Korean Chemical Society, EarlyView.
A well‐defined cobalt(IV)–oxo complex supported by a neutral tetraazamacrocyclic ligand is generated and fully characterized. The cobalt(IV)–oxo species exhibits electrophilic oxygen‐atom and hydrogen‐atom transfer reactivity, strongly modulated by protonation and secondary coordination sphere effects, providing new insight into structure–reactivity ...
Ying Xing, Mi Sook Seo, Yong‐Min Lee, Wonwoo Nam   +3 more
wiley   +1 more source