THERMODYNAMIC AND H-1-NMR STUDY OF PROTON COMPLEX-FORMATION OF HISTIDINE-CONTAINING CYCLODIPEPTIDES IN AQUEOUS-SOLUTION

被引：8

作者：

ARENA, G ^{[1
]}

IMPELLIZZERI, G ^{[1
]}

MACCARRONE, G ^{[1
]}

PAPPALARDO, G ^{[1
]}

SCIOTTO, D ^{[1
]}

RIZZARELLI, E ^{[1
]}

机构：

[1] CNR,IST STUDIO SOSTANZE NAT INTERESSE ALIMENTARE & CHIMICOFARMACEUT,CATANIA,ITALY

来源：

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 | 1992年 / 03期

关键词：

D O I：

10.1039/p29920000371

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A thermodynamic and H-1 NMR study of proton complex formation in aqueous solution of some L-histidine-containing cyclic L-dipeptides has been carried out. The enthalpic and entropic changes associated with protonation of the cyclodipeptides, obtained by potentiometric and calorimetric measurements, together with the H-1 NMR data and NOESY experiments, enable the role played by non-covalent interactions in proton complex formation to be assessed. In addition, a comparison with c(Glys-His) permits the influence of side-chain residues on the conformation of protonated species to be observed.

引用

页码：371 / 376

页数：6

共 35 条

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