Complex formation between Cu(II) and the amino sugars methyl-beta-L-daunosaminide (MeDauN), 6-amino-6-deoxy-D-glucose (Glc6N), 3-dimethylamino-3,4,6-trideoxy-D-xyloheksose (desosamine DSA), and methyl-3-amino-3-deoxy-alpha-D-mannopyranose (MeMan3N) was studied in aqueous solution by potentiometric and spectroscopic (EPR, electron absorption, and CD) techniques. The results show that Glc6N and DSA ligands, lacking the cis-oriented couples of [NH2, OH] donors, give rise only to dimeric complexes. The other two ligands, although both forming mononuclear species, exhibit different coordination abilities, depending on the assistance of donors able to yield axial interaction with the metal ion.
Coordination ability of selected amino sugars with Cu2+ ions in solution / Jezowska Bojczuk, M; Chruscinska, E; Trnka, T; Micera, Giovanni. - In: JOURNAL OF INORGANIC BIOCHEMISTRY. - ISSN 0162-0134. - 63:4(1996), pp. 231-239. [10.1016/0162-0134(95)00224-3]
Coordination ability of selected amino sugars with Cu2+ ions in solution
MICERA, Giovanni
1996-01-01
Abstract
Complex formation between Cu(II) and the amino sugars methyl-beta-L-daunosaminide (MeDauN), 6-amino-6-deoxy-D-glucose (Glc6N), 3-dimethylamino-3,4,6-trideoxy-D-xyloheksose (desosamine DSA), and methyl-3-amino-3-deoxy-alpha-D-mannopyranose (MeMan3N) was studied in aqueous solution by potentiometric and spectroscopic (EPR, electron absorption, and CD) techniques. The results show that Glc6N and DSA ligands, lacking the cis-oriented couples of [NH2, OH] donors, give rise only to dimeric complexes. The other two ligands, although both forming mononuclear species, exhibit different coordination abilities, depending on the assistance of donors able to yield axial interaction with the metal ion.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.