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13C-NMR. Spectra of Pteridines

✍ Scribed by Georges Müller; Wolfgang Von Philipsborn

Publisher: John Wiley and Sons
Year: 1973
Tongue: German
Weight: 428 KB
Volume: 56
Category: Article
ISSN: 0018-019X
DOI: 10.1002/hlca.19730560751

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✦ Synopsis

Abstract

^13^C‐NMR. spectra of pterin, xanthopterin, isoxanthopterin, leucopterin, lumazine and of the model compounds isocytosine and desamino‐isocytosine have been measured as anions and cations in 1 M NaOD, CF~3~COOH, H~2~SO~4~ and FSO~3~H solutions. The spectra were analysed by means of heteronuclear double resonance, with the aid of non‐decoupled spectra, and by spectral comparison. The results are interpreted in terms of the ionisation state of the pteridines in the four solvents and are compared with those obtained from ^1^H‐NMR. spectroscopy.

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