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  • 1
    Electronic Resource
    Electronic Resource
    Untersuchungen mit selektiven Abspaltungsreagenzien für ADPOC-geschützte Aminosäuren und Peptide (1993)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1993 (1993), S. 131-136 
    Details
    ISSN: 0170-2041
    Keywords: Adpoc-protecting group ; Protecting groups ; Amino acids ; Peptides ; Kinetics ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Investigations with Selective Deblocking Reagents for Adpoc-Protected Amino Acids and PeptidesSelective reagents for the removal of the Adpoc group have been developed. For this purpose several peptides containing tryptophan and N∊-Boc-lysine have been synthesized. Among several acidolytic reagents, 0.1 N HCl/TFEt/CHCl3 (1:9:1) and 50% HCOOH/TFEt/CHCl3 (1:9:1) show high selectivity especially for the N∊-tert-butyloxycarbonyl group of lysine. Cleavage rates are determined by HPLC and TLC.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199319930124
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  • 2
    Electronic Resource
    Electronic Resource
    Totalsynthese von Thymosin β4, 1. Klassische Synthese des Fragments [11-19] von Thymosin β4 (1991)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1991 (1991), S. 1251-1257 
    Details
    ISSN: 0170-2041
    Keywords: Thymosin β4, fragment [11-19] ; Thymus peptides ; Peptides ; Amino acids ; Protecting group, phenyl esters of peptides as ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Total Synthesis of Thymosin β4, 1. - Conventional Synthesis of the Fragment [11-19] of Thymosin β4As part of the total synthesis of thymosin β4 two synthetic pathways for the synthesis of the thymosin β4 fragment [11-19] are described. The side-chain functions are protected by tert-butyl and the α-amino residues by Z groups. As temporary protection of the carboxyl function the phenyl ester is successfully used.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.1991199101216
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  • 3
    Electronic Resource
    Electronic Resource
    Totalsynthese von Thymosin β4, 2. Klassische Synthese des Fragments [20-30] von Thymosin β4 (1992)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1992 (1992), S. 361-370 
    Details
    ISSN: 0170-2041
    Keywords: Thymosin β4, fragment [20-30] ; Thymus peptides ; Amino acids ; Protecting groups, phenyl esters of peptides as ; Peptides ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Total Synthesis of Thymosin β4, 2.  -  Conventional Synthesis of the Fragment [20-30] of Thymosin β4As part of the total synthesis of thymosin β4 three synthetic pathways for the synthesis of the thymosin β4 fragment [20-30] are described. The side-chain functions are protected by tert-butyl and the α-amino residues by Z groups. As temporary protection of the carboxyl function the phenyl ester is successfully used.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199219920164
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