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'Transphosphorylation' in keywords
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1980 (1)
1977 (2)
1Author    G. S., M. K.Requires cookie*
 Title    Preparation of Spin-Labeled Phosphoroamidates in High Yield Using Imidazole as the Transfer Agent  
 Abstract    The spin-labeled (l-oxyl-2,2,6,6-tetramethyl-4-piperidyl)-phenyl imidazole-1-phos-phonate (4) was used to prepare (l-oxyl-2,2,6,6-tetramethyl-4-piperidyl)phenyl N-alkyl and N-aryl phosphoroamidates (8) in yields generally exceeding 70%. @ > -0 -P -N R 'R " ^ -0 -P -C I OR OR OR 4 8 1 0 Amidates 8 were also prepared from the corresponding chloridate 10. However, in the 
  Reference    (Z. Naturforsch. 32b, 321—327 [1977]; received September 3 1976) 
  Published    1977 
  Keywords    Spin-Labeled Phosphoroamidates, Amines, N itroxyl Moiety, Transphosphorylation 
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 TEI-XML for    default:Reihe_B/32/ZNB-1977-32b-0321.pdf 
 Identifier    ZNB-1977-32b-0321 
 Volume    32 
2Author    Requires cookie*
 Title    Transphosphorylative Spin-Labeling Utilizing Diimidazolides of Pentavalent Phosphorus  
 Abstract    G e o r g e S o s n o v s k y a n d M a r i a K o n i e c z n y The reaction of the spin-labeled diimidazolide 1 with hydroxy and amino compounds was studied. Diimidazolide 1 was superior to the dichloridate 6 for the preparation of spin-labeled phosphates 3 and phosphorodiamidates 2. The spin-labeled phosphate 15 was synthesized through hydrolysis of 6 . Spin-labeled cyclophosphoramidates (10-13), analogs of the cytotoxic Endoxan, were prepared by the reaction of 1 and 6 with the appropriate difunctional nucleophile. Inductive effects of substituents in the imidazolyl m oiety on the transphosphorylation reaction were also studied. 0 0 0 0 R0p { N ^ f) 2 R O P (N r'r2)2 R 0P(0R> 2 RO PCIj I 2 3 6 0 o 1 1 / N OP (CH2)n N H 10 (n • 2 ,3) H 0 • II ,0 ROP r i i CH, ROP, n ' x h , 13 
  Reference    (Z. Naturforsch. 32b, 1048—1059 [1977]; received May 9 1977) 
  Published    1977 
  Keywords    Spin-labeled Imidazolides, Phosphates, Cyclophosphoramidates, Transphosphorylation, Phosphorodiamidates 
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 TEI-XML for    default:Reihe_B/32/ZNB-1977-32b-1048.pdf 
 Identifier    ZNB-1977-32b-1048 
 Volume    32 
3Author    Oemer Saygin, Peter DeckerRequires cookie*
 Title    Nonenzymatic Catalysis by Metal Ions and Phosphoric Acid Esters of Hydroxamic Acid Formation*  
 Abstract    Nonenzymatic catalysis by bivalent ions of Be, Mg, Ca, Zn, Mn, Ni and Co and bio-organic phosphates of the formation of hydroxamic acids from acetate or amino acids has been studied systematically. Increased yields of hydroxamate were observed at particular combinations of reactants. The most prominent increase (ca. 15-fold) was found with acetate and Ni++, and with a combination of ATP and Be++. Among others especially ribose-5-phosphate and glucose-5-phosphate enhanced yields in the presence of most metal ions. Since no release of inorganic phosphate was observed, this effect cannot be interpreted as an evidence for intermediate transhosphorylation reactions; it may also result from simple catalytic effects of metal sugar complexes. 
  Reference    Z. Naturforsch. 35b, 727—730 (1980); received February 7 1980 
  Published    1980 
  Keywords    Prebiological Evolution, Bioids, Transphosphorylation, Hydroxylamine, Acylate Activation 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0727.pdf 
 Identifier    ZNB-1980-35b-0727 
 Volume    35