Results 51 to 60 of about 11,450 (195)

Evaluation of the Antioxidative Properties of N-Acylamino-Substituted Tricyclic Imides

Journal of Chemistry, 2013
New N-acylamino-substituted tricyclic imides have been screened for scavenging ability against the free radical 2,2-diphenyl-1-picryl-hydrazyl (DPPH•), chelating activity on ferrous ions, and reductive potential.
Melek Gul, Irem Kulu, Aysegul Peksel, Nuket Ocal   +3 more
doaj   +1 more source

Perfluorinated Brønsted 'Superacids': Powerful Catalysts for the Preparation of Vitamin E

CHIMIA, 2004
The key-step in the industrial synthesis of (all-rac)-?-tocopherol (synthetic vitamin E) is the condensation reaction of trimethylhydroquinone with the C20 building block isophytol.
Thomas Netscher, Werner Bonrath, Alois Haas, Eike Hoppmann, Horst Pauling   +4 more
doaj   +1 more source

Chemical control of nadimide cure temperature and rate [PDF]

, 1985
Polyimide resins suitable for use as composite matrix materials are formed by copolymerization of maleic and norbornenyl endcapped monomers and oligomers.
Lauver, R. W.
core   +1 more source

Phosphorus-containing sulfonated polyimides for proton exchange membranes [PDF]

, 2008
Synthesis and characterization of the novel sulfonated BAPPO monomer and its use in the synthesis of a new phosphine oxide-based sulfonated polyimide are described. BTDA, 6FDA, and DDS were used as monomers in the polyimide synthesis.
Cornet, Faure, Genies, Geniesa, Guo, Jang, Jeong, Karlsson, Kim, Lee, Lee, Martinez-Nung, Miyatake, Riley, Shobha, Summer, Temple, Udea, Wakizoe, Wang, Wang, Xing, Zhang, Zhao   +23 more
core   +1 more source

Aspectos químicos e potencial terapêutico de imidas cíclicas: uma revisão da literatura Chemical aspects and therapeutic potential of cyclic imides: a review

Química Nova, 2003
Cyclic imides consists of an important family of organic compounds with therapeutic potential. In this review, emphasis will be given to the chemical and biological aspects of several sub-classes of this family, incluing maleimides, succinimides ...
Valdir Cechinel Filho, Fátima de Campos, Rogério Corrêa, Rosendo A. Yunes, Ricardo J. Nunes   +4 more
doaj   +1 more source

Network-analysis-guided synthesis of weisaconitine D and liljestrandinine. [PDF]

, 2015
General strategies for the chemical synthesis of organic compounds, especially of architecturally complex natural products, are not easily identified. Here we present a method to establish a strategy for such syntheses, which uses network analysis.
Gallego, GM, Kou, KGM, Kulyk, S, Lebold, TP, Lee, JC, Lilien, R, Marth, CJ, Qin, J, Sarpong, R   +8 more
core   +2 more sources

Modified Polyvinyl Alcohol Containing New Imides / Iron Oxide Nanoparticles :Synthesis , Characterization and  Biological Evaluation

Iraqi Journal of Pharmaceutical Sciences
A series of new imides compounds[1-4] were synthesized from reaction of tetrachlorophthalic anhydride or nitro phthalic anhydride or malic anhydride or Succinic anhydride  with  4-amino benzene thiol under fusion conditions.
Ruwaidah S. Saeed, Kawther Ayad Obead
doaj   +1 more source

Low Temperature Precursor Route for Highly Efficient Spherically Shaped LED-Phosphors M2Si5N8:Eu2+ (M = Eu, Sr, Ba) [PDF]

, 2009
The highly efficient nitridosilicate phosphors M2Si5N8 (M = Sr, Ba, Eu) for phosphor-converted pc-LEDs were synthesized at low temperatures using a novel precursor route involving metal amides M(NH2)2.
Gál Z. A., Huppertz H., Huppertz H., Huppertz H., Höppe H. A., Imamura H., Jüstel T., Krauss H. L., Lange H., Li J., Li Y. Q., Li Y. Q., Linde G., Lutz H., Mueller-Mach R., Piao X., Schlieper T., Schmidt P., Schnick W., Schnick W., Schnick W., Senker J., Xie R.-J., Xie R.-J., Yamada M., Yamane H.   +25 more
core   +1 more source

A novel synthetic chemistry approach to linkage-specific ubiquitin conjugation. [PDF]

, 2015
Ubiquitination is of great importance as the post-translational modification of proteins with ubiquitin, or ubiquitin chains, facilitates a number of vital cellular processes.
Caddick, S, Chudasama, V, Moody, P, Morgan, RE, Smith, ME   +4 more
core   +1 more source

Síntese e atividade antibacteriana de imidas cíclicas: 3,4-dicloromaleimidas e 3-cloro-4-substituída-maleimidas

Química Nova, 1998
In the present study, new N-aryl and N-alkylarylcyclic imides were synthesized and their antibacterial properties against Escherichia coli and Staphylococcus aureus were evaluated by using the diffusion method.
Andricopulo Adriano Defini, Yunes Rosendo Augusto, Nunes Ricardo José, Savi Alessandro O. S., Corrêa Rogério, Cruz Alexandre Bella, Cechinel Filho Valdir   +6 more
doaj