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  • 1
    Electronic Resource
    Electronic Resource
    Responses of male winter moths (Operophtera brumata) to their sex attactant (3Z,6Z,9Z)-1,3,6,9 nonadecatetraene and to some structural analogues (1984)
    Springer
    Entomologia experimentalis et applicata 35 (1984), S. 208-210 
    Details
    ISSN: 1570-7458
    Keywords: Operophtera brumata ; sex attractant ; (3Z,6Z,9Z)-1,3,6,9-nonadecatetraene ; field test ; inhibition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Conclusion (3Z,6Z,9Z)-1,3,6,9-nonadecatetraene, the synthetic sex pheromone of the female of O. brumata is highly active in attracting males of this species in the field (Germany and Switzerland). No analogous compounds possessing attractivity to O. brumata males have been found up to now, nor did they show any inhibitory effects to the same species. Therefore (3Z,6Z,9Z)-1,3,6,9-nonadecatetraene (I) can be recommended as a good attractant in the prognosis or monitoring of this lepidopteran pest.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00217540
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  • 2
    Electronic Resource
    Electronic Resource
    A two-component sex attractant for males of the geometrid moth Alsophila quadripunctata (1984)
    Springer
    Entomologia experimentalis et applicata 36 (1984), S. 287-291 
    Details
    ISSN: 1570-7458
    Keywords: Alsophila quadripunctata ; Geometridae ; sex attractant ; (3Z,6Z,9Z)-3,6,9-nonadecatriene ; (6Z,9Z)-6,9-nonadecadiene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Die binäre Mischung der Kohlenwasserstoffe (3Z,6Z,9Z)-3,6,9-Nonadecatrien [ZZZ3,6,9-19:H] und (6Z,9Z)-6,9-Nonadecadien [ZZ6,9-19:H] in den Verhältnissen 1:1 bis 1:0.01 erwies sich im Freiland als Sexuallockstoff für Männchen von Alsophila quadripunctata (Geometridae, Lepidoptera). Dabei besaß die 1:1-Mischung die beste Fängigkeit, das Nonadecatrien allein lockte schlechter, während das C19-Alkadien unwirksam war. Ein Dosiswirksamkeitstest ergab bei Köderbeladungen von 1.8 mg (Trien:Dien + 1:0.8) die besten Fangergebnisse. Im Verlauf der Untersuchungen wurden weitere zwölf geometrische-oder positionsisomere C19-Polyenkohlenwasserstoffe getestet, wobei keine der geprüften Verbindungen Attraktant-oder Inhibitorwirkung zeigte.
    Notes: Abstract The binary mixture of the hydrocarbons (3Z,6Z,9Z)-3,6,9-nonadecatriene and (6Z,9Z)-6,9-nonadecadiene is a sex attractant for males of Alsophila quadripunctata Esp. (Lepidoptera, Geometridae). Triene/diene ratios from 1:1 to 1:0.01 attracted males in the field, the ratios 1:1 and 1:0.7 were most effective. The triene on its own also attracted males, but in significantly lower numbers than the 1:1 mixture. In a dosage test the highest dose, 1800 μg of 1:0.8 [triene:diene] mixture applied to rubber caps was most effective. This is the first report of a geometrid sex attractant with field activity containing more than one component.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00185660
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  • 3
    Electronic Resource
    Electronic Resource
    Fullerene Dendrimers and Lipofullerenes with an Inherently Chiral Hexaaddition Pattern (2000)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 2000 (2000), S. 1051-1059 
    Details
    ISSN: 1434-193X
    Keywords: Chirality ; Dendrimers ; Fullerenes ; Lipofullerenes ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: ---The facile synthesis of enantiomerically pure C3-symmetrical fullerene dendrimers all-R-fA-7, all-S-fC-8, all-R-fC-9, and all-S-fA-10, as well as lipofullerenes all-S-fA-11 and all-S-fC-12 involving an octahedral [3:3] addition pattern is described. The C3 symmetrical tris[bis(4-phenyl-2-oxazoline)methano]fullerenes 1, 2, 3, and 4 with known absolute configuration were used as precursors. The completion of the octahedral addition pattern was achieved by a threefold cyclopropanation with the dendritic 3,5-dihydroxybenzylic bromomalonate 5 and the lipophilic dioctadecyl bromomalonate 6. The absolute configurations of the precursor trisadducts were retained in the inherently chiral C3-symmetrical hexakisadducts 7-12. The structure and the isomeric purity of all hexakisadducts 7-12 were unambiguously proven by NMR spectroscopy and other techniques. Preliminary experiments with the dendritic hexakisadducts all-S-fC 8 and all-S-fA 10 revealed that these macromolecular ligands posess catalytic properties with respect to stereoselective cyclopropanations of styrene with ethyl diazoacetate.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Synthesis of a Biotinated Lipofullerene as a New Type of Transmembrane Anchor (2000)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 2000 (2000), S. 1173-1181 
    Details
    ISSN: 1434-193X
    Keywords: Biotin ; Fullerenes ; Membranes ; Nanostructures ; Reflectometric interference spectroscopy ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: -As a prototype for a new class of lipid membrane components, the lipophilic fullerene derivative (so-called lipofullerene) 1 was synthesized and characterized. This mixed [1:5]-hexakisadduct consists of ten long alkyl chains within five didodecyl malonate addends and a linker malonate carrying a (+)-biotin unit as part of an amphiphilic spacer. The malonates are attached to the fullerene core in an octahedral addition pattern, which was achieved by two successive cyclopropanation sequences with the functional precursor malonate 8 and dodecyl malonate 10. The final step of the synthesis of 1 was the attachment of activated biotin 5 with the deprotected precursor 11. Binding experiments followed by reflectometric interference spectroscopy [RIfS] proved the capability of 1 to bind specifically the protein streptavidin (SA) through the biotin unit. The amphiphilic behavior of 1 was demonstrated by Langmuir Blodgett (LB) film investigations.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Dendritic Mixed Hexakisadducts of C60 with a Th Symmetrical Addition Pattern (2000)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 2000 (2000), S. 171-180 
    Details
    ISSN: 1434-193X
    Keywords: Dendrimers ; Fullerenes ; Macromolecular chemistry ; Template synthesis ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: ---The synthesis and complete characterization of dendritic hexakisadducts 8-13 of C60 with a mixed (1:5, 2:4, 3:3 and 4:2) Th symmetrical addition pattern is described. Pentakis-, tetrakis-, tris- and bisadducts 4-7 of C60 with diethyl malonate addends arranged in an incomplete octahedral addition pattern served as core building blocks. Completion of the pseudo-octahedral architecture was achieved by exhaustive cyclopropanation with first- to third-generation bromomalonate dendra 1-3 consisting of the corresponding Fréchet-type 3,5-dihydroxybenzyl alcohol subunits. This concept allows for the convergent synthesis of globular dendrimers with a variable number of dendritic malonates (1-4) and a high dendron density in good yields. The 1H and 13C NMR spectra reflect the Th symmetrical addition pattern of the products and reveal spatial interactions of inner dendron branches.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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