Cystine peptides: The intramolecular ant
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R. Kishore; S. Raghothama; P. Balaram
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Article
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1987
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Wiley (John Wiley & Sons)
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English
⚖ 979 KB
A 20-membered cyclic peptide disulfide Boc-C ys-Val-Aib-Ma-Leu-C ys-NHMe I I S S has been synthesized as a conformational model for disulfide loops of limited ring size. 'H-nmr studies at 270 MHz establish the presence of three intramolecular hydrogen bonds involving the Leu, Val, and methylamide NH