Browsing PubMed İndeksli Yayınlar Koleksiyonu by Title
Now showing items 927-946 of 1498
-
N-(chroman-4-ylidene)aryloxyacetohydrazones: Synthesis and antimicrobial activity
(1997)In this study, some N-(chroman-4-ylidene)phenoxyacetohydrazone and N-(chroman-4-ylidene)phenoxypropiohydrazone compounds were synthesized. Structure of the compounds were identified by using IR, 1H NMR and MASS spectral ... -
Nano-hemoglobin film based sextet state biomemory device by cross-linked photosensitive hapten monomer
(Elsevier Science BV, 2018)In this study, a biomemory device, consisting of hemoglobin (Hb) cross-linked by MACys-Ru(bipyr)(2)-MACys) photosensitive monomer cross-linkers, which have memory effect through both Ru3+/2+ in hapten monomer and Fe3+/2+ ... -
Nanostructured rutile TiO2 for selective photocatalytic oxidation of aromatic alcohols to aldehydes in water
(American Chemical Society, 2008)Selective photocatalytic oxidation of aromatic alcohols to aldehydes was performed in water in the presence of TiO2 rutile photocatalysts that exhibited a low degree of crystallinity. The nanostructured rutile samples, ... -
Natural product studies of U.S. endangered plants: Volatile components of Lindera melissifolia (Lauraceae) repel mosquitoes and ticks
(Pergamon-Elsevier Science LTD, 2012)The number of endangered plant species in the U.S. is significant, yet studies aimed towards utilizing these plants are limited. Ticks and mosquitoes are vectors of significant pathogenic diseases of humans. Repellents are ... -
A naturally occuring triterpene saponin ardisiacrispin B displayed cytotoxic effects in multi-factorial drug resistant cancer cells via ferroptotic and apoptotic cell death
(Elsevier GMBH, Urban & Fischer Verlag, 2018)Introduction: Multidrug resistance of cancer cells constitutes a serious problem in chemotherapy and a challenging issue in the discovery of new cytotoxic drugs. Many saponins are known to display anti-cancer effects. In ... -
Near-infrared and ultraviolet induced isomerization of crotonic acid in N-2 and Xe cryomatrices: First observation of two high-energy trans C-O conformers and mechanistic insights
(Amer Inst Physics, 2014)E-crotonic acid was isolated in cryogenic solid N-2 and xenon matrices, and subjected to Laser ultraviolet (UV) and near-infrared (NIR) irradiations. In the deposited matrices, the two low-energy cis C-O E-cc and E-ct ... -
Near-Unity Efficiency Energy Transfer from Colloidal Semiconductor Quantum Wells of CdSe/CdS Nanoplatelets to a Monolayer of MoS2
(American Chemical Society, 2018)A hybrid structure of the quasi-2D colloidal semiconductor quantum wells assembled with a single layer of 2D transition metal dichalcogenides offers the possibility of highly strong dipole-to-dipole coupling, which may ... -
Nepetalactone: A new opioid analgesic from Nepeta caesarea Boiss.
(Royal Pharmaceutical Soc Great Britain, 1998)The essential oils of Nepeta species including Nepeta phyllochlamys P. H. Davis, N. nuda L. ssp. nude, and N. caesarea Boiss. have been screened by use of the tail-flick and tail immersion (52.5 degrees C) methods. Of the ... -
New 1,4-dihydro[1,8]naphthyridine derivatives as DNA gyrase inhibitors
(Pergamon-Elsevier Science LTD, 2017)Owing to the growing need for novel antibacterial agents, we synthesized a novel series of fluoroquinolones including 7-substituted-1-(2,4-difluoropheny1)-6-fluoro-4-oxo-1,4-dihydro[1,8]naphthyridine-3-carboxylic acid ... -
New Adamantyl Chalcones: Synthesis, Antimicrobial and Anticancer Activities
(Bentham Science Publ LTD, 2017)Background: A new variety of adamantyl chalcones (2, 3a-o) were efficiently prepared by Claisen-Schmidt reaction of 4-adamantyl acetophenone 2 with a serie of aromatic aldehydes in good yields. Their structures were confirmed ... -
New antidepressant drug candidate: Hypericum montbretti extract
(Taylor & Francis LTD, 2011)This study was designed to investigate possible antidepressant-like effects of the extract prepared from the flowers of Hypericum montbretti Spach. (Guttiferae, Clusiaceae). Phytochemical constituents of the methanolic ... -
New approaches to tumor therapy with siRNA-decorated and chitosan-modified PLGA nanoparticles
(Taylor & Francis Ltd, 2019)Objective: in this study, we aimed to develop a candidate modifited polymeric nanoparticle (NP) system that will kill cancer cells by facilitated to apoptosis and also reduce pain. Methods: Chitosan-modified PLGA NPs were ... -
New Benzimidazole-1,2,4-Triazole Hybrid Compounds: Synthesis, Anticandidal Activity and Cytotoxicity Evaluation
(MDPI AG, 2017)Owing to the growing need for antifungal agents, we synthesized a new series 2-((5-(4-(5-substituted-1H-benzimidazol-2-yl)phenyl)-4-substituted-4H-1,2,4-triazol-3-yl)thio)-1-(substituted phenyl)ethan-1-one derivatives, ... -
New beta-diketone and 3,5-dimethyl isoxazole derivatives of theophylline as potential bronchodilator agents
(Ecv-Editio Cantor Verlag Medizin Naturwissenschaften, 1998)Ten new compounds having 7-[(2,4-pentanedione-3-yl)alkyl]- and 7-[(3,5-dimethylisoxazole-4-yl)alkyl]-3,7-dihydro-1,3-dimethyl-1H-purine-2,6-dione structures were synthesized and their bronchodilator activities investigated ... -
A new bisabolene derivative from the essential oil of Prangos uechtritzii fruits
(Georg Thieme Verlag Kg, 2000)The fruits of endemic Prangos uechtritzii Boiss. & Hausskn. (Umbelliferae) were subjected to hydrodistillation and microdistillation. The resulting volatiles were investigated by CC-MS to determine the composition of the ... -
New caryophyllene derivatives from Betula litwinowii
(American Chemical Society, 2000)Four new caryophyllene derivatives- 14-hydroxy-4,5-dihydro-beta-caryophyllene (1), 14-acetoxy-4,5 -dihydro-beta-caryophyllene (2), 4,5-dihydro-beta-caryophyllene-14-al (3), and caryophylla-8(14)-en-5-one (4)-are reported ... -
New chroman-4-one/thiochroman-4-one derivatives as potential anticancer agents
(Elsevier Science BV, 2017)The synthesis of 3-[3/4-(2-aryl-2-oxoethoxy) arylidene] chroman/thiochroman-4-one derivatives (1-34) and evaluation of their anticancer activities were aimed in this work. Final compounds were obtained in multistep synthesis ... -
New food for an old mouth: New enzyme for an ancient archaea
(Elsevier Science Inc, 2014)As a multifunctional group of enzymes, glutathione S-transferases (GSTs) are capable of inactivation, degradation or excretion of wide range of compounds catalytically or non-catalytically. However, to date, no study has ... -
A new metal chelate affinity adsorbent for Cytochrome c
(Wiley, 2004)We have prepared a novel metal-chelate adsorbent utilizing N-methaeryloyl-L-histidine methyl ester (MAH) as a metal-chelating ligand. MAH was synthesized by using methacryloyl chloride and L-histidine methyl ester ... -
New piperidine-hydrazone derivatives: Synthesis, biological evaluations and molecular docking studies as AChE and BChE inhibitors
(Elsevier France-Editions Scientifiques Medicales Elsevier, 2016)Hydrazones and the piperidine ring containing compounds were considered as beneficial substrates in drug design. Therefore, this study was aimed at the synthesis of new benzoyl hydrazones derived from ethyl 4-oxopiperidi ...