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  • 1
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Peptide Syntheses with 3′-Iodo-L-tyrosine, II1,2).  -  Syntheses of Peptides with 3′-Iodo-L-tyrosine without Blocking of the Phenol Function3′-Iodo-L-tyrosine (Ity3)) can be used for conventional peptide syntheses without protection of the phenolic hydroxy group as shown by several examples of glycine model peptide syntheses.
    Notes: 3′-Iod-L-tyrosin (Ity3)) kann ohne Schutz der phenolischen Hydroxygruppe in konventionellen Peptidsynthesen Verwendung finden, wie am Beispiel der Synthesen einiger Modellpeptide mit Glycin gezeigt wird.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Syntheses of Peptides with 3′-Iodo-∼-tyrosine, II). - Syntheses of Peptides with 04′-Benzyl-3′-iodo-L-tyrosine
    Additional Material: 1 Ill.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1976 (1976), S. 1521-1530 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Syntheses of Peptides with 3′,5′-Diiodo-L-tyrosine04′-Benzyl-3′,5′-diiodo-L;-tyrosine (1) as Boc derivative 2 or 2 derivative 4 can be coupled via the method of mixed anhydrides with c. g . glycine methyl ester to give the dipeptide esters 5 and 7, respectively. The methyl ester 3 of 1 is used as amino component in the synthesis of Boc dipeptide ester 6. The protecting groups are removed by HBr in acetic acid. 3′,5′-Diiodo- r-tyrosine (DIT), as its methyl ester 16, can also be used as a component of a peptide synthesis without blocking of the phenolic hydroxy group.
    Notes: 04′-Benzyl-3′,5′-dijod-L-tyrosin (1) läßt sich als Boc-Derivat 2 oder Z-Derivat 4 nach der Methode der gemischten Anhydride, z. B. mit Glycinmethylester, zum Boc-Dipeptidester 5 bzw. 7 kuppeln. Der Methylester 3 von 1 dient als Aminokompononte bei der Synthese mit Boc-glycin zum Dipeptidester 6. Die Abspaltung der Schutzgruppen erfolgt mit HBr in Eisessig. 3′,5′-Dijod-L-tyrosin (DlT) kann auch ohne Blockierung der phenolischen Hydroxygruppe als Methylester 16 zur Peptidsynthese, z. B. des Tripeptids 21, verwendet werden.
    Additional Material: 3 Tab.
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  • 4
    Publication Date: 2019
    Description: Ammonium metavanadate, NH4VO3, plays an important role in the preparation of vanadium oxides and other ammonium compounds, such as NH4V3O8, (NH4)2V3O8, and NH4V4O10, which were found to possess interesting electrochemical properties. In this work, a new route for the synthesis of NH4VO3 is proposed by mixing an organic ammonium salt and V2O5 in a suitable solvent. The one-step procedure is carried out at room temperature. Additionally, the need for pH control and use of oxidants necessary in known methods is eliminated. The mechanism of the NH4VO3 formation is explained. It is presented that it is possible to tailor the morphology and size of the obtained NH4VO3 crystals, depending on the combination of reagents. Nano- and microcrystals of NH4VO3 are obtained and used as precursors in the hydrothermal synthesis of higher ammonium vanadates. It is proven that the size of the precursor particles can significantly affect the physical and chemical properties of the resulting products.
    Electronic ISSN: 1996-1944
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by MDPI
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