The kinetics of tritium-hydrogen exchange in xanthosine,theobromine and monomethylated derivatives of xanthine |
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| Authors: | Ma?gorzata Jelińska Jerzy Szyd?owski Jerzy Sobkowski |
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| Affiliation: | Department of Chemistry, Warsaw University,?wirki i Wigury 101, 02-089 Warsaw, Poland |
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| Abstract: | Tritium exchange at C-8 of xanthosine, theobromine, 1-, 3- and 7-methylxanthine in water has been studied. The rates of detritiation of these compounds have been determined over a pH range at constant temperature. Several mechanisms of exchange involving various ionic forms of substrate operating at different pH have been suggested. |
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