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Proton magnetic resonance spectra of some 6- and 7-substituted 2-amino-4-hydroxypteridines

✍ Scribed by Carlyle B. Storm; Hyang S. Chung

Publisher
John Wiley and Sons
Year
1976
Tongue
English
Weight
204 KB
Volume
8
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The conformations in solution of 6‐phenyltetrahydropterin, 6,7‐diphenyltetrahydropterin and 6‐7, dimethyltetrahydropterin have been determined from their proton magnetic resonance spectra. The 6‐phenyltetrahydropterin has the reduced pyrazine ring in a half chair conformation with the phenyl ring in the equatorial position. Both the 6,7‐diphenyl‐ and 6,7‐dimethyltetrahydropterins are of the cis configuration and have one substituent in an axial position. The enzymatic activity of these cofactors may be related to these conformations.

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