Results 41 to 50 of about 1,749 (157)

Green Synthesis of Polysubstituted Quinolines and Xanthene Derivatives Promoted by Tartaric Acid as a Naturally Green Catalyst under Solvent-free Conditions

Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2018
This method reported the use of tartaric acid as a green and highly efficient catalyst for the convenient synthesis of polysubstituted quinolines and xanthenes derivatives in excellent yields under solvent-free conditions. The main advantages of this one-
Farzaneh Mohamadpour, Malek Taher Maghsoodlou, Mojtaba Lashkari, Reza Heydari, Nourallah Hazeri   +4 more
doaj   +1 more source

Nano-Fe3O4 encapsulated-silica particles bearing sulfonic acid groups as an efficient, eco-friendly and magnetically recoverable catalyst for synthesis of various xanthene derivatives under solvent-free conditions

Journal of Saudi Chemical Society, 2017
This report describes an efficient method for the synthesis of 1,8-dioxo-octahydroxanthene, 14H-dibenzo[a,j]xanthene, 12-aryl-tetrahydrobenzo[a]xanthenes-11-one and 13-aryl-5H-dibenzo[b,i]xanthene-5,7,12,14(13H)-tetraone derivatives in the presence of a ...
Firouzeh Nemati, Samane Sabaqian
doaj   +1 more source

2,3‐Dichloro‐5,6‐Dicyano‐1,4‐Benzoquinone (DDQ)‐Mediated CC Bond Formation: Redox Strategies from Stoichiometric to Catalytic Systems

ChemistryOpen, EarlyView.
2,3‐Dichloro‐5,6‐dicyano‐1,4‐benzoquinone serves as a versatile oxidant and redox catalyst for CC bond formation through hydride abstraction or single‐electron transfer. Stoichiometric and catalytic systems enable benzylic, allylic, and aromatic CH activation under mild, metal‐free conditions, providing sustainable routes to complex and bioactive ...
Dohoon Cha, Sun‐Joon Min
wiley   +1 more source

Activatable smart contrast agents for photoacoustic imaging

Smart Molecules, EarlyView.
This review highlights recent advances in smart activatable photoacoustic imaging (PAI) contrast agents, which dynamically modulate their optical properties in response to external stimuli or microenvironmental cues. It discusses their molecular design, activation mechanisms, biomedical applications, and future prospects for clinically tailored use ...
Donghyeon Oh, Jihye Lee, Suyoung Park, Juyoung Yoon, Won Jong Kim, Chulhong Kim   +5 more
wiley   +1 more source

Biological evaluation and simple method for the synthesis of tetrahydrobenzo[a]xanthenes-11-one derivatives

Journal of Saudi Chemical Society, 2017
A simple method for the synthesis of Tetrahydrobenzo[a]xanthenes-11-one derivatives in the presence of BF3.SiO2, and its antibacterial activity was assessed against Pseudomonas syringae, Xanthomonas citi and Pectobacterium carotovorum.
Ali Akbari, Asghar Hosseini-Nia
doaj   +1 more source

Novel and emerging antimicrobial strategies in the management of oral infections

Periodontology 2000, EarlyView.
Abstract Background Antibiotics marked a pivotal turning point in human civilization, enhancing social interactions and extending human life expectancy. In addition to their success in treating systemic infectious diseases, they have significantly improved periodontal treatment outcomes as an adjunct therapy.
Ozge Unlu, Nil Yakar, Alpdogan Kantarci
wiley   +1 more source

Programmed Activatable Photosensitizer for Acidity/Glutathione Dual‐Locked Photodynamic Theranostics of Tumors

Aggregate, Volume 7, Issue 3, March 2026.
A programmed activatable long‐wavelength photosensitizer (LET‐19) integrated an oxazinane moiety and 3,5‐bis(trifluoromethyl)benzenethiol group into the iodinated cyanine skeleton was developed for acidity/glutathione dual‐locked photodynamic theranostics of tumors.
Chao Zhao, Xinlan Lai, Yu Zhang, Shan Lei, Yurong Liu, Peng Huang, Jing Lin   +6 more
wiley   +1 more source

Efficient, One-Pot Synthesis of Tetrahydrobenzo[a]xanthen-11-ones and Dibenzo[a,j]xanthenes Using Trichloroacetic Acid as a Solid Heterogeneous Catalyst Under Solvent-Free Conditions

E-Journal of Chemistry, 2011
A simple and efficient method have been described for the synthesis of 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-one derivatives employing a one-pot, three-component reaction of aryl aldehydes, 2-naphthol and dimedone in the presence of ...
Zahed Karimi Jaber, S. Zoleykha Abbasi, Baharak Pooladian, Marziyeh Jokar   +3 more
doaj   +1 more source

Pentoxifylline: A New Armamentarium in Diabetic Foot Ulcers [PDF]

Journal of Clinical and Diagnostic Research, 2014
Background: Diabetic foot ulcers are estimated to affect 15% of all diabetics and precede almost 85% of foot amputations. Pentoxyfylline a substituted xanthenes’ derivative has been reported to increase the blood flow to the microcirculation and ...
Venkatesh Rewale, Kiran Ravi Prabhakar, Anjali M. Chitale   +2 more
doaj   +1 more source

Tailoring Biomass‐Derived Organosolv Lignin Derivatives for High‐Capacity Adsorption of Rhodamine B

ChemSusChem, Volume 19, Issue 4, 25 February 2026.
Organosolv lignin derivatives modified with phenolic compounds were synthesized via a one‐step lignin‐first approach and evaluated as renewable adsorbents for removing Rhodamine B dye from water. Among them, resorcinol‐modified lignin showed the highest adsorption capacity (101 mg g−1), driven by high surface area, pore volume, and accessible hydroxyl ...
Sayantani Bhattacharya, Maxim Galkin, Michelle Åhlén, Maria Strømme, Johan Gising   +4 more
wiley   +1 more source