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13 C‐NMR. Spectra of Pteridines
Author(s) -
Müller Georges,
Philipsborn Wolfgang Von
Publication year - 1973
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19730560751
Subject(s) - chemistry , pterin , heteronuclear molecule , spectral line , nuclear magnetic resonance spectroscopy , nmr spectra database , resonance (particle physics) , spectroscopy , analytical chemistry (journal) , stereochemistry , organic chemistry , physics , particle physics , cofactor , astronomy , quantum mechanics , enzyme
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.