Cyclic tetrapeptides of glycine or alanine combined with sarcosine; the co-existence of neutral and protonated species
- 1 January 1972
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 5,p. 255-257
- https://doi.org/10.1039/c39720000255
Abstract
All combinations between glycine and sarcosine, and between alanine and sarcosine, in a cyclic tetrapeptide have been synthesized; when n.m.r. spectroscopy can be applied, the same cis,trans,cis,trans-conformation, neutral or protonated, is indicated, as long as α-methyl groups do not give rise to steric hindrance.Keywords
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