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Nitrogen-15 magnetic resonance spectroscopy. Natural-abundance spectra of isomeric homooligopeptides of L-norvaline and L-valine to the tetramers

Toniolo, Claudio and Bonora, Gian Maria and Sullivan, Glenn R. and Bearden, William H. and Roberts, John D. (1980) Nitrogen-15 magnetic resonance spectroscopy. Natural-abundance spectra of isomeric homooligopeptides of L-norvaline and L-valine to the tetramers. Journal of Organic Chemistry, 45 (2). pp. 288-290. ISSN 0022-3263. doi:10.1021/jo01290a017. https://resolver.caltech.edu/CaltechAUTHORS:20151007-073140400

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Abstract

The ^(15)N NMR shifts of chemically and optically pure N- and C-protected homooligopeptides derived from L-norvaline and L-valine to the tetramers have been determined at the natural-abundance level of ^(15)N by using the Fourier-transform technique. The shift effects produced by increasing the chain length and temperature, as well as changing the solvent from a hydrogen-bonding donor to a hydrogen-bonding acceptor and replacing the linear side chain (as in the norvaline peptides) by a β branched side chain (as in the valine peptides), are discussed.


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http://dx.doi.org/10.1021/jo01290a017DOIArticle
http://pubs.acs.org/doi/abs/10.1021/jo01290a017PublisherArticle
Additional Information:© 1980 American Chemical Society. Received June 11, 1979. The portion of the research reported in this paper that was carried out at the California Institute of Technology was supported by the National Science Foundation and by the Public Health Service, Research Grant No. GM-11072 from the Division of General Medical Sciences. The syntheses and characterizations reported here were carried out at the University of Padua and supported by the CNR, Italy.
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U.S. Public Health Service (USPHS)GM-11072
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Caltech Gates and Crellin Laboratories of Chemistry6113
Issue or Number:2
DOI:10.1021/jo01290a017
Record Number:CaltechAUTHORS:20151007-073140400
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20151007-073140400
Official Citation:Nitrogen-15 magnetic resonance spectroscopy. Natural-abundance spectra of isomeric homooligopeptides of L-norvaline and L-valine to the tetramers Claudio Toniolo, Gian Maria Bonora, Glenn R. Sullivan, William H. Bearden, and John D. Roberts The Journal of Organic Chemistry 1980 45 (2), 288-290 DOI: 10.1021/jo01290a017
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60832
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:07 Oct 2015 15:46
Last Modified:10 Nov 2021 22:40

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