Chemistry of Natural Compounds

, Volume 9, Issue 3, pp 320–327 | Cite as

Conformational states of methylamides of N-acetyl α-amino acids and their N-methyl derivatives II.1H NMR spectra

  • V. T. Ivanov
  • P. V. Kostetskii
  • T. A. Balashova
  • S. L. Portnova
  • E. S. Efremov
  • Yu. A. Ovchinnikov
Article
  • 23 Downloads

Summary

1. The proportions of the cis forms of methylamides and dimethylamides of acetylmethylalanine, acetylmethylvaline, and acetylproline in media of different polarities have been determined from the ratios of the areas of the corresponding signals in the NMR spectra.

2. The rotational states of the fragments NH-CαH and CαH-CβH in the methylamides and dimethylamides of the acetylamino acids have been investigated by analyzing the vicinal spin-spin coupling constants of the protons in these fragments.

Keywords

Trans Form Diamide Nonpolar Solvent Multiplet Signal Methylamides 

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Copyright information

© Plenum Publishing Corporation 1975

Authors and Affiliations

  • V. T. Ivanov
  • P. V. Kostetskii
  • T. A. Balashova
  • S. L. Portnova
  • E. S. Efremov
  • Yu. A. Ovchinnikov

There are no affiliations available

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