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Carbon-carbon coupling in [3-13C1]tryptophan

✍ Scribed by R. E. London

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
337 KB
Volume
17
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

Carbon‐carbon coupling constants have been observed in [90% 3‐^13^C~1~]tryptophan and used to assign the ^13^C resonances of the indole ring. The results support a reassignment of C‐5 and C‐6 recently suggested on the basis of the reassigment of the corresponding resonances in indole. Coupling constants are compared with theoretical values obtained using a finite perturbation theory Blizzard‐Santry program, and excellent agreement is obtained for the ^1^J(CC) values. The calculations predict that the Fermi contact contribution is dominant for all ^n^J(CC) couplings to C‐3.

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