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  • Articles  (5)
  • Alkaloids
  • Chemistry
  • Deutschland
  • LUNAR AND PLANETARY EXPLORATION
  • Life and Medical Sciences
  • Polymer and Materials Science
  • American Association for the Advancement of Science (AAAS)  (5)
  • 2020-2023
  • 2000-2004  (5)
  • 1965-1969
  • 1960-1964
  • 1945-1949
  • 1935-1939
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  • Articles  (5)
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  • 1
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    Patent law. Natural substances and patentable inventions (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-05-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Demaine, Linda J -- Fellmeth, Aaron X -- New York, N.Y. -- Science. 2003 May 30;300(5624):1375-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉RAND, Santa Monica, CA 90401, USA. demaine@rand.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12775825" target="_blank"〉PubMed〈/a〉
    Keywords: Aluminum Oxide ; Chemical Phenomena ; Chemistry ; Natural Science Disciplines ; Patents as Topic/*legislation & jurisprudence ; Plant Extracts ; Plant Roots ; Titanium ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Chemical ecology: missed opportunities? (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-03-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eisner, Thomas -- Berenbaum, May -- New York, N.Y. -- Science. 2002 Mar 15;295(5562):1973.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11896239" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biochemical Phenomena ; *Biochemistry ; *Biological Factors/chemistry ; *Biology ; Chemical Phenomena ; Chemistry ; *Ecology ; Ecosystem ; *Molecular Biology ; Research Support as Topic ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Protein kinase C overactivity impairs prefrontal cortical regulation of working memory (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-10-30
    Description: The prefrontal cortex is a higher brain region that regulates thought, behavior, and emotion using representational knowledge, operations often referred to as working memory. We tested the influence of protein kinase C (PKC) intracellular signaling on prefrontal cortical cognitive function and showed that high levels of PKC activity in prefrontal cortex, as seen for example during stress exposure, markedly impair behavioral and electrophysiological measures of working memory. These data suggest that excessive PKC activation can disrupt prefrontal cortical regulation of behavior and thought, possibly contributing to signs of prefrontal cortical dysfunction such as distractibility, impaired judgment, impulsivity, and thought disorder.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Birnbaum, S G -- Yuan, P X -- Wang, M -- Vijayraghavan, S -- Bloom, A K -- Davis, D J -- Gobeske, K T -- Sweatt, J D -- Manji, H K -- Arnsten, A F T -- AG06036/AG/NIA NIH HHS/ -- P50 MH068789/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2004 Oct 29;306(5697):882-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Yale Medical School, 333 Cedar Street, New Haven, CT 06520-8001, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15514161" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenergic alpha-Agonists/pharmacology ; Alkaloids ; Animals ; Benzophenanthridines ; Carbolines/pharmacology ; Electrophysiology ; Enzyme Activation ; Female ; Imidazoles/pharmacology ; Lithium Carbonate/pharmacology ; Macaca mulatta ; Male ; Memory/drug effects/*physiology ; Neurons/drug effects/physiology ; Phenanthridines/pharmacology ; Prefrontal Cortex/enzymology/*physiology ; Protein Kinase C/antagonists & inhibitors/*metabolism ; Rats ; Rats, Sprague-Dawley ; Receptors, Adrenergic, alpha-1/physiology ; Signal Transduction ; Stress, Physiological/physiopathology ; Tetradecanoylphorbol Acetate/pharmacology ; Valproic Acid/pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    Total synthesis of norzoanthamine (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-06-19
    Description: Norzoanthamine, an alkaloid isolated from Zoanthus sp., can suppress the loss of bone weight and strength in ovariectomized mice. Norzoanthamine derivatives can also strongly inhibit the growth of P-388 murine leukemia cell lines and human platelet aggregation. However, norzoanthamine's densely functionalized complex stereostructure and scarce availability from natural sources have proved a synthetic challenge. We report the stereoselective total synthesis of norzoanthamine in 41 steps, with an overall yield of 3.5% (an average of 92% yield each step).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miyashita, Masaaki -- Sasaki, Minoru -- Hattori, Izumi -- Sakai, Mio -- Tanino, Keiji -- New York, N.Y. -- Science. 2004 Jul 23;305(5683):495-9. Epub 2004 Jun 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Chemistry, Graduate School of Science, Hokkaido University, Sapporo 060-0810, Japan. miyasita@sci.hokudai.ac.jp〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15205476" target="_blank"〉PubMed〈/a〉
    Keywords: Alkaloids ; Azepines/*chemical synthesis/chemistry/pharmacology ; Heterocyclic Compounds with 4 or More Rings ; Molecular Conformation ; Molecular Structure ; Oxidation-Reduction ; Quinolines/*chemical synthesis/chemistry/pharmacology ; Stereoisomerism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Profile: Marina Protopopova (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-05-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Malakoff, David -- New York, N.Y. -- Science. 2004 May 28;304(5675):1283.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15166364" target="_blank"〉PubMed〈/a〉
    Keywords: Biotechnology ; Career Choice ; Chemistry ; Emigration and Immigration ; History, 20th Century ; History, 21st Century ; Siberia ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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