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Synthesis, Conformation, and Interactions with Small Molecules of Bis (Cyclic Dipeptides)

✍ Scribed by Hiroshi Tomiyasu; Shunsaku Kinjura; Yukio Imanishi

Publisher: John Wiley and Sons
Year: 1982
Tongue: German
Weight: 509 KB
Volume: 65
Category: Article
ISSN: 0018-019X
DOI: 10.1002/hlca.19820650315

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✦ Synopsis

Abstract

Bis (cyclic dipeptides), cyclo and S, S′‐bis(cyclo(hemiCys‐Pro)), were synthesized. These bis (cyclic dipeptides) very efficiently formed complexes with Ba^2+^ and Na^+^ owing to intramolecular cooperation of two cyclicdipeptide moieties, the bis‐effect. Cyclo stacked sodium 8‐anilino‐1‐naphthalensulfonate in aqueous solution. These properties of complexation were controlled by the nature of the bridge connecting two cyclic dipeptide moieties. The geometry of the complex between S, S′‐bis (cyclo (hemiCys‐Pro)) and metal ion was investigated with the help of circular dichroism, nuclear magnetic resonance, and Raman spectroscopy.

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