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  • 1
    Electronic Resource
    Electronic Resource
    Synthesis of Hydrastine (1950)
    [s.l.] : Nature Publishing Group
    Nature 165 (1950), S. 529-529 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] However, by partial racemization of natural Z-hydrastine an optically active stereoisomeride was obtained, and a comparison of the rotatory powers made it clear that natural hydrastine and natural narcotine are of different stereochemical configuration2. Adopting the convention that natural ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/165529a0
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  • 2
    Electronic Resource
    Electronic Resource
    An Alkaloid of Dioscorea hispida , Dennst (1951)
    [s.l.] : Nature Publishing Group
    Nature 168 (1951), S. 1090-1090 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In 1937, Leyva and Gutierrez4 isolated from the tubers of Dioscorea hispida, Dennst, a base which gave the same colour reactions and possessed the same toxicological properties towards mice and monkeys as dioscorine. Although the base could not be crystallized, and no derivatives were described, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1681090a0
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  • 3
    Electronic Resource
    Electronic Resource
    Final Stages of the A → BCD Route to Cholesterol (1951)
    [s.l.] : Nature Publishing Group
    Nature 167 (1951), S. 484-485 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Inhoffen ketone might well have been con-vertible to cholestenone by direct condensation with diethylaminobutanone methiodide under suitable conditions. However, this reaction did not succeed, although it gave good results with cis-l-methyl-2-decalone2. The cause is the trans- junction of rings ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/167484b0
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  • 4
    Electronic Resource
    Electronic Resource
    Trans -4-oxohex-2-enal in the Odoriferous Secretion of Sigarafalleni (Fieb.) (Hemiptera-Heteroptera) (1965)
    [s.l.] : Nature Publishing Group
    Nature 205 (1965), S. 106-107 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Short-chain aliphatic aldehydes of variable chain length (CB?C10), both saturated and unsaturated, have been found in the secretions of coreids1'2, pentatomids2?5 and the cimicid Cimex lectularius L5 In addition to aldehydes the secretions of some pentatomids have been found to contain the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/205106b0
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