Results 51 to 60 of about 1,713 (173)

Redetermination and absolute configuration of atalaphylline

Acta Crystallographica Section E, 2010
The title acridone alkaloid [systematic name: 1,3,5-trihydroxy-2,4-bis(3-methylbut-2-enyl)acridin-9(10H)-one], C23H25NO4, has previously been reported as crystallizing in the chiral orthorhombic space group P212121 [Chantrapromma et al. (2010).
Hoong-Kun Fun, Chin Sing Yeap, Suchada Chantrapromma   +2 more
doaj   +1 more source

Application of Lanthanide Shift Reagent to the ¹H-NMR Assignments of Acridone Alkaloids

Molecules, 2020
This study investigates the application of the paramagnetic shift reagent tris(dipivaloylmethanato)-europium(III) in NMR spectral studies of permethoxyacridone alkaloids (1–3) and pyranoacridone alkaloids (4–6).
Sio-Hong Lam, Hsin-Yi Hung, Ping-Chung Kuo, Daih-Huang Kuo, Fu-An Chen, Tian-Shung Wu   +5 more
doaj   +1 more source

SYNTHESIS AND ANTINEOPLASTIC ACTIVITY OF CERTAIN TRIAZENE AND TRIAZENO-ACRIDINE COMBILEXIN DERIVATIVES [PDF]

Bulletin of Pharmaceutical Sciences. Assiut University, 2007
Four series of bifunctional ligands have been synthesized as DNA-binding combilexins. These novel agents contain a triazenobenzene sulfonamide linker moiety that is attached to an intercalating acridine or acridone chromophore by a functionalized amide ...
Noha Amin, Nagwa Abdel Gawad, Mohammed Mohammed, Hanan Georgey, Samir Aly   +4 more
doaj   +1 more source

Ueber Phenylantranilsäure und Acridon [PDF]

Berichte der deutschen chemischen Gesellschaft, 1892
n ...
Graebe, C., Lagodzinski, K.
openaire   +1 more source

Enzymatic synthesis of bioactive quinolones and (thio)coumarins by fungal type III polyketide synthases

The FEBS Journal, Volume 293, Issue 9, Page 2673-2691, May 2026.
Quinolones are valuable scaffolds for drug discovery but are rare in nature. Here, we show that two fungal enzymes, AthePKS and FerePKS, can generate 2‐quinolones and two additional heteroaromatic scaffolds. Using AthePKS, we designed an artificial enzymatic cascade towards an antimicrobial quinolone from a simple precursor and implemented it in E ...
Nika Sokolova, Angelina Osipyan, Lili Zhang, Matthew R. Groves, Sandy Schmidt, Kristina Haslinger   +5 more
wiley   +1 more source

Acridone alkaloids from Zanthoxylum zanthoxyloides exhibit in vitro anti-Candida, anti-biofilm and antifungal-resistance-modifying activities against drug-Resistant Candida albicans, Candida glabrata and other non-albicans Candida species

Results in Chemistry
Candida infections pose a growing global health threat, with high mortality rates driven by multidrug-resistant (MDR) strains, and a limited number of antifungals in the pipeline.
Benjamin Kingsley Harley, Maudesta Opoku, Theophilus Duku Asamoah, Angelina Efia Mantey, Inemesit Okon Ben, Jonathan Jato, Mike Okweesi Aggrey, Nii Korley Kortei, Theophilus Christian Fleischer   +8 more
doaj   +1 more source

Development of Mild Palladium‐Catalyzed N‐Arylation of Ortho‐Acylanilines in Rhamnolipid Micellar System

ChemSusChem, Volume 19, Issue 7, 14 April 2026.
Aqueous micellar catalysis using industrially sourced rhamnolipids enables efficient Pd‐catalyzed N‐arylation of o‐acylanilines at 40°C. This surfactant‐driven system offers a sustainable and more efficient alternative to organic solvents, combining broad substrate scope, low catalyst loading, and enhanced energy efficiency.
Attila R. Herczegh, Péter R. Kollár, Johannes Lehmann, Zoltán Novák   +3 more
wiley   +1 more source

Shaping the Afterglow of Indolo[3, 2‐b]Carbazoles via Modulating Intersystem Crossing (ISC/rISC) and Phosphorescence Rates

Aggregate, Volume 7, Issue 4, April 2026.
In a series of indolo[3,2‐b]carbazoles (X‐ICZ‐p1; X = F, Cl, Br), the afterglow properties are shaped by modulating intersystem crossing (ISC/rISC) and phosphorescence rates. F/Cl‐ICZ‐p1 systems show moderate rates, achieving color‐tunable, dual‐mode afterglow in polymethyl methacrylate from persistent thermally activated delayed fluorescence (pTADF ...
Jiang Zhao, Lihua Xu, Ye Meng, Bingjia Xu, Hang Cong   +4 more
wiley   +1 more source

Secondary Metabolites from (Rutaceae) from Tanzania

Natural Product Communications, 2008
The dichloromethane extract of the stem bark of Teclea amaniensis has yielded two novel furoquinoline alkaloids, 5-[3-methylbut-2-enyl]-4,6,7-trimethoxyfuro[2,3- b ]quinoline and 6-(2′,3′-epoxy-3-methylbutyl)-5-hydroxyl-4,7-dimethoxyfuro[2,3- b ...
Joseph J. Magadula, Modest C Kapingu, Zakaria H. Mbwambo, Dulcie A. Mulholland   +3 more
doaj   +1 more source

Alkylation of Acridone and Thioacridone

, 1987
Department of Chemistry, University of Kalyani, Kalyani-741 235 Manuscript received 8 October 1986, accepted 22 April 1987 Alkylation of Acridone and Thioacridone.
S. K. CHATTOPADHYA, B. K. SEN, K. C. MAJUMDAR   +2 more
openaire   +1 more source