The structural characteristics of an immunostimulating agent (3-(5-thioxo-L-prolyl)-L-thiazolidine-4-carboxylic acid) have been stablished using a combination of 1H and 13C NMR spectroscopy, molecular mechanic calculations (in vacuo and in solution) and X-ray crystallographic analyses. Conformational calculations and NMR spectra identify two classes of conformers, cis and trans, around the peptide bond between the rings, while in the solid state only the cis form has been found
Structural characterization of a dipeptide compound with immunostimulant activity: 3-(5-thioxo-l-prolyl)-l-thiazolidine-4-carboxylic acid / R. Artali, G. Bombieri, F. Meneghetti, D. Nava, E. Ragg, R. Stradi. - In: IL FARMACO. - ISSN 0014-827X. - 58:9(2003 Sep), pp. 883-889. [10.1016/S0014-827X(03)00146-0]
Structural characterization of a dipeptide compound with immunostimulant activity: 3-(5-thioxo-l-prolyl)-l-thiazolidine-4-carboxylic acid
G. BombieriSecondo
;F. Meneghetti;D. Nava;E. RaggPenultimo
;R. StradiUltimo
2003
Abstract
The structural characteristics of an immunostimulating agent (3-(5-thioxo-L-prolyl)-L-thiazolidine-4-carboxylic acid) have been stablished using a combination of 1H and 13C NMR spectroscopy, molecular mechanic calculations (in vacuo and in solution) and X-ray crystallographic analyses. Conformational calculations and NMR spectra identify two classes of conformers, cis and trans, around the peptide bond between the rings, while in the solid state only the cis form has been found
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