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  • 1
    Electronic Resource
    Electronic Resource
    The arbuscular mycorrhizal fungus, Glomus intraradices, induces the accumulation of cyclohexenone derivatives in tobacco roots (1999)
    Springer
    Planta 207 (1999), S. 620-623 
    Details
    ISSN: 1432-2048
    Keywords: Key words: Arbuscular mycorrhiza ; Blumenol derivative ; Cyclohexenone derivative ; Glomus ; Nicotiana ; Isoprenoid induction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract. Tobacco (Nicotiana tabacum L.) plants were grown with and without the arbuscular mycorrhizal fungus, Glomus intraradices Schenk & Smith. High-performance liquid chromatographic analyses of methanolic extracts from mycorrhizal and non-mycorrhizal tobacco roots revealed marked fungus-induced changes in the patterns of UV-detectable products. The UV spectra of these products, obtained from an HPLC photodiode array detector, indicated the presence of several blumenol derivatives. The most predominant compound among these derivatives was spectroscopically identified as 13-hydroxyblumenol C 9-O-gentiobioside (“nicoblumin”), i.e. the 9-O-(6′-O-β-glucopyranosyl)-β-glucopyranoside of 13-hydroxy-6-(3-hydroxybutyl)-1,1,5-trimethyl-4-cyclohexen-3-one, a new natural product. This is the first report on the identification of blumenol derivatives in mycorrhizal roots of a non-gramineous plant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004250050526
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  • 2
    Electronic Resource
    Electronic Resource
    Chirality of azelastine and flezelastine: Investigation of their enantiomers (1993)
    New York, NY [u.a.] : Wiley-Blackwell
    Chirality 5 (1993), S. 366-369 
    Details
    ISSN: 0899-0042
    Keywords: azelastine ; flezelastine ; fractional crystallization ; antiallergic/antiasthmatic ; chiral discrimination ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The racemic phthalazinone derivatives azelastine and flezelastine were resolved via formation of diastereomeric salts and fractional crystallization thereof. The optical purity of the enantiomers was checked by HPLC. Pharmacological investigations in vitro and in vivo related to antiallergic/antiasthmatic activity revealed some stereospecific differences. However, chiral discrimination could not be observed with regard to overall activity of azelastine and flezelastine. © 1993 Wiley-Liss, Inc.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/chir.530050517
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  • 3
    Electronic Resource
    Electronic Resource
    Eigenschaften eines (Arylthiomethylen)cyclohexanons (1984)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1984 (1984), S. 576-585 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Properties of an (Arylthiomethylene)cyclohexanoneThe configuration of 2-[(4-chlorophenylthio)methylene]-6,6-dimethylcyclohexanone (2) and the reactions of 2-[(4-chlorophenylthio)(lithio)methylene]-6,6-dimethylcyclohexanone (3) with electrophiles have been investigated.
    Notes: Die Konfiguration von 2-[(4-Chlorphenylthio)methylen]-6,6-dimethylcyclohexanon (2) und die Reaktionen von 2-[(4-Chlorphenylthio)(lithio)methylen]-6,6-dimethylcyclohexanon (3) mit Elektrophilen wurden untersucht.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198419840315
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  • 4
    Electronic Resource
    Electronic Resource
    Synthesis of 13-O-β-D-Glucopyranosylgibberellin A5 β-D-Glucopyranosyl Ester (1994)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1994 (1994), S. 1149-1151 
    Details
    ISSN: 0170-2041
    Keywords: Gibberellins ; Plant hormones ; Glucosyl conjugates ; Hormones ; Koenigs-Knorr reactions ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 13-O-β-D-Glucopyranosylgibberellin A5 β-D-glucopyranosyl ester (2a) was synthesized by base-catalyzed (triethylamine) reaction of gibberellin A5 13-O-β-D-glucopyranoside (4a) with α-acetobromoglucose followed by mild sodium methanolate deacetylation. Structures of the gibberellin A5 glucosyl conjugates were established by LSI-MS, ESI-MS, and 1H-NMR spectroscopy.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199419941116
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