220542-06-3Relevant academic research and scientific papers
Desazadesmethyldesferrithiocin analogues as orally effective iron chelators
Bergeron, Raymond J.,Wiegand, Jan,Weimar, William R.,Vinson, J. R. Timothy,Bussenius, J?rg,Yao, Guo Wei,McManis, James S.
, p. 95 - 108 (2007/10/03)
Further structure-activity studies of desferrithiocin analogues are carried out. (S)-Desazadesmethyldesferrithiocin, 2-(2-hydroxyphenyl)-Δ2- thiazoline-4(S)-carboxylic acid, serves as the principal framework in the current paper. Desazadesmethyldesferrithiocin can be structurally altered with facility, and data are already available on its iron-clearing properties and toxicity parameters. Four different kinds of structural modifications of this framework are undertaken: introduction of hydroxy, carboxy, or methoxy groups on the aromatic ring; alteration of the thiazoline ring; increasing the distance between the ligand donor atoms; and benz-fusion of the aromatic rings. The structural modifications described are shown to have a tremendous impact on both the iron clearance and toxicity profiles of the desazadesmethyldesferrithiocin molecule. All of the compounds are assessed in a bile-duct-cannulated rodent model to determine iron clearance efficiency. Ligands which demonstrate an efficiency of greater than 2% are carried forward to the iron-overloaded primate for iron-clearing measurements. Ligands with efficiencies greater than 3% in the primate are then evaluated in a formal toxicity study in rodents. On the basis of the results of the present work, 2-(2,4-dihydroxyphenyl)-Δ2-thiazoline-4(S)-carboxylic acid is a promising candidate for clinical evaluation.
Synthesis of new building blocks: Towards the analogs of peptide nucleic acids (PNAs)
Dallaire, Carol,Arya, Prabhat
, p. 5129 - 5132 (2007/10/03)
To obtain new analogs of peptide nucleic acids (PNAs), synthesis of the building block 14 has been achieved. Building block 14 has been derived from the coupling of the isothiocyanate derivative, 12 with 13. Isothiocyanate derivative 12 was obtained from
