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1991 (1)
1981 (1)
1979 (1)
1Author    Albrecht Schutz, Ivar Ugi, Hans-Joachim KabbeRequires cookie*
 Title    Die Synthese eines Cephamderivats mittels Vierkomponenten-Kondensation The Synthesis of a Cepham Derivative by Four Component Condensation  
 Abstract    A five-step synthesis of a cepham derivative from a known, a,/?,/?-trihydroxyisobutyr-aldehyde derivative (1) and the sodium thioenolate of C-formyl N-phthaloyl methyl glycinate (2) is described. The key step of the synthesis is a four component condensation. 
  Reference    Z. Naturforsch. 34b, 1303—1306 (1979); eingegangen am 6. April 1979 
  Published    1979 
  Keywords    Cepham Derivative, Four Component Condensation, /^-Lactam Synthesis 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-1303.pdf 
 Identifier    ZNB-1979-34b-1303 
 Volume    34 
2Author    Reza Arshady, Ivar UgiRequires cookie*
 Title    Solid Phase Peptide Synthesis by Four Component Condensation: Peptide Formation on an Isocyano Polymer Support  
 Abstract    Coupling of various protected amino acids or small peptides on an isocyano polymer and in the presence of 1 -methyl-3-formylindole dem-onstrates the feasibility of peptide formation by four component condensation on a polymer support, and the final peptide is detached from the resin by 50% trifluoroacetic acid in aceto-nitrile at room temperatme. 
  Reference    Z. Naturforsch. 36b, 1202—1203 (1981); received May 4 1981 
  Published    1981 
  Keywords    Solid Phase Peptide Synthesis, Four Component Condensation, Isocyano Polymer Support, Anchoring Technique 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1202_n.pdf 
 Identifier    ZNB-1981-36b-1202_n 
 Volume    36 
3Author    Stephan König, Ivar UgiRequires cookie*
 Title    Vernetzung wäßriger Alginsäure mittels der Vierkomponenten-Kondensation unter Einschluß-Immobilisierung von Enzymena Crosslinking o f Aqueous Alginie Acid by Four Component Condensation with Inclusion Immobilization o f Enzymes  
 Abstract    The four com ponent condensation (4C C, Ugi reaction) o f aqueous alginic acid with form­ aldehyde, difunctional amine and isocyanide components produces a gel. Enzymes, e.g. "acid­ ic phosphatase" (AP) and L-(+)-lactate dehydrogenase (L D H), can be immobilized by inclu­ sion in the above crosslinked alginic acid. The enzymes retain some o f their activity (LDH: 8 -1 0 % ; AP: 8 2 -8 7 %). 
  Reference    Z. Naturforsch. 46b, 1261—1265 (1991); eingegangen am 4. Februar 1991 
  Published    1991 
  Keywords    Enzyme Im mobilization by Inclusion, Alginie Acid, Four Component Condensation 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-1261.pdf 
 Identifier    ZNB-1991-46b-1261 
 Volume    46