The molecule of about 2 nm in size is kept stable between two metal electrodes for several days. Image: Christian Grupe/KIT A team of physicists has succeeded in performing an extraordinary experiment: They demonstrated how magnetism that generally manifests itself by a force between two magnetized objects acts within a single molecule. This discovery is… Continue reading Magnetism of single molecule controlled by voltage
Category: Uncategorized
Synthesis of cyclic carbonates with carbon dioxide and cesium carbonate
Cyclic carbonates are important compounds for the synthesis of biocompatible polymers and linear dialkyl carbonates, as well as solvents and electrolytes. We report here the synthesis of such compounds from easily accessible starting materials with carbon dioxide as a C1 source and caesium carbonate as the base. This new methodology is able to yield… Continue reading Synthesis of cyclic carbonates with carbon dioxide and cesium carbonate
Even bacteria use social networks
This model shows the role of vesicles, vesicle chains and membrane tubes in M. xanthus biofilms. The scientists believe these connections help cells exchange signals and material. Image: Auer laboratory Using several imaging techniques, Lawrence Berkeley National Laboratory scientists found that a common soil bacterium stays connected by a network of chain-like membranes. They… Continue reading Even bacteria use social networks
History of Cyclotides
Cyclotides are head-to-tail cyclic peptides in plants Cyclotides are plant-derived peptides of approximately 30 amino acids. They have the characteristic structural features of a head-to-tail cyclized backbone and a cystine knot arrangement of their three conserved disulfide bonds. Their unique structural features lead to exceptional stability. This and their amenability to chemical synthesis have made… Continue reading History of Cyclotides
Marine Natural Products – Bioactivity & Chemical Ecology
Marine Natural Products – Bioactivity & Chemical Ecology allow slideshare to load……… Marine Natural Products – Bioactivity & Chemical Ecology [Kenneth Boyd, Martina Maria Burtscher & Robbie Mutton] from University of the Highlands and Islands Share this:
Drug Design:Discovery, Development and Delivery
allow slideshare to load………………. Drug Design:Discovery, Development and Delivery from Dr. Basavaraj Nanjwade Share this:
Crystal structure closes classic carbocation case
Herb Brown favoured rapidly equilibrating classical enantiomers of the 2-norbornyl cation Winstein proposed the nonclassical structure of the 2-norbornyl cation, now shown to be correct F Scholz et al, Science, 2013, DOI: 10.1126/science.1238849 After more than 60 years, crystals of the 2-norbornyl cation have finally put its ‘nonclassical’ structure, with a pentacoordinate carbon, beyond… Continue reading Crystal structure closes classic carbocation case
Visible-light mediated heterogeneous C-H functionalization: oxidative multi-component reactions using a recyclable titanium dioxide (TiO2) catalyst
Green Chem., 2013, Advance Article DOI: 10.1039/C3GC40587G, Communication Carlos Vila, Magnus Rueping RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, D-52074 Aachen, Germany A new multi-component protocol employing visible-light catalysis using a cheap, robust, readily available and recyclable titanium dioxide catalyst provides a series of [small alpha]-amino amides. Visible-light mediated heterogeneous C-H functionalization:… Continue reading Visible-light mediated heterogeneous C-H functionalization: oxidative multi-component reactions using a recyclable titanium dioxide (TiO2) catalyst
Star-Shaped Macromolecule Grabs Large Anions-Chemists at Indiana University Bloomington have created a symmetrical, five-sided macrocycle that is easy to synthesize and has characteristics that may help expand the molecular tool box available to researchers in biology, chemistry and materials sciences.
cure for diabetes This model shows the five-sided cyanostar macrocycle capturing perchlorate at its center. (Credit: Amar Flood)], Chemists at Indiana University Bloomington have created a symmetrical, five-sided macrocycle that is easy to synthesize and has characteristics that may help expand the molecular tool box available to researchers in biology, chemistry and materials sciences.The molecule,… Continue reading Star-Shaped Macromolecule Grabs Large Anions-Chemists at Indiana University Bloomington have created a symmetrical, five-sided macrocycle that is easy to synthesize and has characteristics that may help expand the molecular tool box available to researchers in biology, chemistry and materials sciences.
Coenzyme Q10
Coenzyme Q10 2-[(2E,6E,10E,14E,18E,22E,26E,30E,34E)-3,7,11,15,19,23,27,31,35,39-decamethyltetraconta-2,6,10,14,18,22,26,30,34,38-decaenyl]-5, 6-dimethoxy-3-methylcyclohexa-2,5-diene-1,4-dione Coenzyme Q10 (ubiquinone-10, CoQ10, CoQ, Q10 or simply Q) is aubiquinone containing 10 isoprenoid units. First discovered in 1957 by Crane et al. [1], its chemical structure was determined by Karl Folkers [2], who later won the Priestley medal from the American Chemical Society. This oil-soluble, vitamin-like micronutrient forms part of the electron transport chain which, in the process of… Continue reading Coenzyme Q10