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  • 1
    Electronic Resource
    Electronic Resource
    Investigations of the turnover of the putative cellulose-synthesizing particle “rosettes” within the plasma membrane ofFunaria hygrometrica protonema cells (1989)
    Springer
    Protoplasma 148 (1989), S. 57-69 
    Details
    ISSN: 1615-6102
    Keywords: Funaria protonemata ; Polar cell wall formation ; Membrane rosettes ; Freeze fracturing ; Growth inhibition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary In youngFunaria protonemata the influence of various inhibitors and treatments on cell elongation, fine-structure, and particle rosettes within the plasma membrane, putative parts of cellulose synthase complexes, was investigated. Cycloheximide (3×10−5M) inhibited growth, reduced the number of rosettes and evened the gradient of rosette distribution at the beginning of treatment. The cell fine-structure was unaffected. Actinomycin D (10−5M and 10−4) caused an initial but transient decrease in rosette number. Alterations in cell elongation and fine-structure have not been observed. Application of 2.6-dichlorobenzonitrile (10−5 M) for some minutes reduced the number of rosettes remarkably, while cell elongation seemed to be normal after the filaments had been transferred back to normal medium. An incubation of 2 h or longer stopped growth and caused cells to burst. The number of rosettes then rose to about 50% of the control values. When applied for 7 h biofluor (5×10−4 M) promoted growth slightly, but generally it retarded it when used for a longer time. It did not markedly affect the number of rosettes. A short heat stock stopped elongation, caused the disappearance of rosettes and affected the structure of the mitochondria and of the Golgi apparatus. Plasmolysed cells did not grow and, initially, did not have rosettes. At reduced turgor, wider cells are formed. Freeze fracturing under UHV conditions and shadowing at very low specimen temperature revealed a small, central depression in the 8 nm rosette particles, suggesting that they are composed of subunits. Our results provide further evidence that the rosettes are parts of the cellulose synthase complexes. Their existence clearly depends on protein synthesis and on the constitution of the plasma membrane, but not on cellulose crystallization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02079323
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  • 2
    Electronic Resource
    Electronic Resource
    Über den Bau einiger Heteropolysäuren (1934)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 17 (1934), S. 1076-1080 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.193401701135
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  • 3
    Electronic Resource
    Electronic Resource
    Ultrazentrifugale Molekulargewichtsbestimmungen an synthetischen hochpolymeren Stoffen. 91. Mitteilung über hochpolymere Verbindungen (1934)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 17 (1934), S. 335-351 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19340170139
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  • 4
    Electronic Resource
    Electronic Resource
    Ultrazentrifugale Polydispersitätsbestimmungen an hochpolymeren Stoffen. 95. Mitteilung über hochpolymere Verbindungen (1934)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 17 (1934), S. 726-735 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19340170188
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  • 5
    Electronic Resource
    Electronic Resource
    α-Substituierte Phosphonate. 39. Methandiphosphonsäureester durch UV-induzierte Michaelis-Becker-ReaktionHerrn Prof. Dr. Dr. h. c. mult. Alfred Rieche zum 80. Geburtstag gewidmet (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 537-544 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: α-Substituted Phosphonates. 39. Methane-diphosphonic Esters by U.V.-Induced Michaelis-Becker-ReactionDibromomethane resp. chlorbromomethane reacts with sodium dialkyl phosphite in heptane-/liq.NH3 or in liq. NH3 by u.v. irradiation at low temperatures to give in good yields methane diphosphonic acid tetraalkylesters 1. In the same manner with sodium diethyl thionophosphite the corresponding methane-bis-thiophosphonic acid tetraethylester 4 is obtained.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240406
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  • 6
    Electronic Resource
    Electronic Resource
    α-Substituierte Phosphonate. 40. 1-Trimethylammonium-1-diethylphosphono-1-cyanomethylid, ein stabiles N-YlidHerrn Prof. Dr. Dr. h. c. mult. Alfred Rieche zum 80. Geburtstag gewidmet (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 545-549 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: α-Substituted Phosphonates. 40. 1-Trimethylammonium-1-diethylphosphono-1-cyanomethylid, a Stable N-YlidDiethyl-1-dimethylamino-1-cyanomethanephosphonate 4 can be alkylated on nitrogen to the quarternary ammoniumsalts 5, which by C-deprotonation gives the stable N-ylid 8. The N-ylid 8 behaves inert against carbonyl compounds and acylating agents, but can be C-alkylated and  -  involving an ester-dealkylation  -  C-chlorinated.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240407
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  • 7
    Electronic Resource
    Electronic Resource
    α-Substituierte Phosphonate. XXXI. Zur Reaktion von N,N,N′,N′-Tetramethylchlorformamidiniumchlorid mit P-III-Verbindungen (1978)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 320 (1978), S. 389-394 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: α-Substituted Phosphonates. XXXI. The Reaction of N,N,N′,N′-Tetramethyl Chloroformamidinium Chloride with P(III) CompoundsN,N,N′,N′-Tetramethyl chloroformamidiniumchloride (4) does not react with triethyl phosphite (TEP) or isopropyl diphenylphosphinate to give the expected bisphosphoryl derivatives 7 and 11, respectively, but primarily the monophosphorylated amidinium salts 6 and 10 respectively. The phosphine oxide 10 is stable, while 6 undergoes an elimination of ethyl chloride to the betain 8. Even under more drastic conditions the reaction of 4 or 8 with TEP does not lead to the expected bis(dimethylamino)bisphosphonate 7, but to the monoaminated bisphosphonate 1, involving a reduction step. Similar reduction has been observed under mild conditions in Michaelis-Arbusov reaction of dichloromethylenimonium chloride, yielding the expected trisphosphonate 2 and the bisphosphonate 1 as a by-product.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19783200305
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  • 8
    Electronic Resource
    Electronic Resource
    Zur Struktur des „Trichlor-diphenoxyphosphorans“Herrn Professor Helmuth Seeboth zum 60. Geburtstag gewidmet. (1985)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 327 (1985), S. 904-907 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The Structure of “;Trichloro-diphenoxyphosphorane”The structure of ‘Trichloro-diphenoxyphosphorane’ synthesized by well-known and new methods is not a pentacoordinated phosphorus compound, but has the structure of tetraphen-oxyphosphonium hexachlorophosphate 4.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19853270606
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  • 9
    Electronic Resource
    Electronic Resource
    α-Substituierte Phosphonate. 43. Synthese und Reaktivität von 1,2,3,4-Tetrahydroisochinolin-1-phosphonaten (1983)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 325 (1983), S. 437-445 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: α-Substituted Phosphonates. 43. Synthesis and Reactivity of 1,2,3,4-Tetrahydroisochinolin-1-phosphonatesN-Alkyl- and N-arylsubstituted 1,2,3,4-tetrahydroisochinolin-1-phosphonates 1 have been synthesized from the corresponding 3,4-dihydroisochinoliniumbromides 7 and triethyl-phosphite. The N-unsubstituted 1,2,3,4-tetrahydroisochinolin-1-phosphonate 10 is available starting from the 1,2,3,4-tetrahydroisochinolin-1-phosphonic acid by esterification with triethylformate and splitting off the formyl group of the primarily formed N-formyl derivative 14. - N-Quarternated tetrahydroisochinolines 19 and the 1-phosphorylated derivatives 17, respectively react with triethyl-phosphite in an unexpected way by dealkylation and not by splitting off the isochinolinring. - By Horner-synthesis with 1 the 1-aralkylidene-isochinolines 23 are available in moderate yields.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19833250313
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  • 10
    Electronic Resource
    Electronic Resource
    Synthese und Reaktionsverhalten von 2-Aryloxy-s-trithianen (1981)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 323 (1981), S. 939-950 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthesis and Reactions of 2-Aryloxy-s-trithianes2-Aryloxy-s-trithianes 4 had been prepared from 1-tosyl-imino-1-SIV-1,3,5-trithiane and phenolates. - By self-condensation of 4 1,5-bis-(trithianyl)-1,3,5-trithiapentane 5 and triphenyl-orthoformate 7 are formed, accompanied by further products, which had been isolated in pure state and identified unambiguously by H-n.m.r. and mass-spectra. In the presence of acids the 2-aryloxy-s-trithianes 4 react with nucleophilic aromatic compounds such as phenoles, N,N-dimethylaniline, pyrrole, indole, and thiophenes to give the C-trithianylated products. With mercaptanes 2-alkylthio-s-trithianes are formed.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19813230612
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