A simple and effective method for the synthesis of bioactive imidazo[1,2,4]triazole analogues has been developed utilizing the MCR technique, which involved the reaction of aminotriazoles, isocyanides and aldehydes. The products were characterized by (1)H, (13)C NMR spectroscopy, MS and elemental analysis. Interestingly, compounds 19d, 21a, 21b and 21h displayed good cytotoxic activities at 10(-4) M concentration in the inhibition of tumor cell growth as evaluated by the MTT method.
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http://dx.doi.org/10.1007/s11030-007-9059-3 | DOI Listing |
Curr Org Synth
January 2025
Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
Introduction: The development of efficient and sustainable catalytic methodolo-gies has garnered considerable attention in contemporary organic synthesis.
Methods: Herein, we present a novel approach employing the Cu@DPP-SPION catalyst for the synthesis of ethyl 4-(aryl)-6-methyl-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate derivatives. This versatile catalytic system incorporates copper nanoparticles supported on 4-(1H-imidazo[4,5-f][1,10]phenanthrolin-2-yl)benzoic acid-functionalized superparamagnetic iron oxide nanoparticles (SPIONs).
Chemistry
January 2025
Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India.
We have introduced Re(I) tricarbonyl complexes (ReL1 - ReL6) [Re(CO)(N^N)Cl] where N^N=extensive π conjugated imidazo-[4,5-f][1,10]-phenanthroline derivatives that helps in strong DNA intercalation, enhanced photophysical behavior, increase the π-π* character of T state for PDT and high value of lipophilicity for cell membrane penetration. These complexes exhibited prominent intraligand/ligand-centered (π-π*/LC) absorption bands at λ 260-350 nm and relatively weak metal-to-ligand charge-transfer (MLCT) bands within the λ 350-550 nm range. Among the six synthesized complexes, [(CO)ReCl(K-N,N-2-(4-(1-benzyl-1H-tetrazol-5-yl)phenyl)-1H-imidazo[4,5-f][1,10]phenanthroline] (ReL6) exhibited outstanding potency (IC~6 μM, PI>9) under yellow light irradiation compared to dark conditions.
View Article and Find Full Text PDFJ Med Chem
September 2024
School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China.
In this paper, three new iridium(III) complexes: [Ir(piq)(DFIPP)]PF (piq = deprotonated 1-phenylisoquinoline, DFIPP = 3,4-difluoro-2-(1-imidazo[4,5-][1,10]phenenthrolin-2-yl)phenol, ), [Ir(bzq)(DFIPP)]PF (bzq = deprotonated benzo[]quinoline, ), and [Ir(ppy)(DFIPP)]PF (ppy = deprotonated 1-phenylpyridine, ), were synthesized and characterized. The complexes were found to be nontoxic to tumor cells via 3-(4,5-dimethylthiazole-2-yl)-diphenyltetrazolium bromide (MTT) assay. Surprisingly, its liposome-entrapped complexes 3alip, 3blip, and 3clip on B16 cells showed strong cytotoxicity (IC = 13.
View Article and Find Full Text PDFChem Sci
September 2024
Technische Universität Braunschweig, Institute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany
Springtails (Collembola) are important members of the soil mesofauna. They are small, often less than 1-2 mm in length. A typical escape response of most surface-living species is to jump, using their furca.
View Article and Find Full Text PDFDalton Trans
September 2024
School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, PR China.
Cyclometalated iridium(III) compounds have been widely explored due to their outstanding photo-physical properties and multiple anticancer activities. In this paper, three cyclometalated iridium(III) compounds [Ir(ppy)(DBDIP)]PF (5a), [Ir(bzq)(DBDIP)]PF (5b), and [Ir(piq)(DBDIP)]PF (5c) (ppy: 2-phenylpyridine; bzq: benzo[]quinoline; piq: 1-phenylisoquinoline, and DBDIP: 2-(2,3-dihydrobenzo[][1,4]dioxin-6-yl)-1-imidazo[4,5-][1,10]phenanthroline) were synthesized and the mechanism of antitumor activity was investigated. Compounds photoactivated by visible light show strong cytotoxicity against tumor cells, especially toward A549 cells.
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