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001-es BibID:	BIBFORM100488
Első szerző:	Balla József (vegyészmérnök)
Cím:	Chiral quadridentate ligands based on amino acids: template syntheses and properties of the free ligands and their transition-metal complexes / Jozsef Balla, Paul V. Bernhardt, Peter Buglyo, Peter Comba, Trevor W. Hambley, Reto Schmidlin, Sandra Stebler, Katalin Várnagy
Dátum:	1993
ISSN:	0300-9246 1364-5447
Tárgyszavak:	Természettudományok Kémiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Journal of the Chemical Society. Dalton Transactions. - : 7 (1993), p. 1143-1149. -
További szerzők:	Bernhardt, Paul V. Buglyó Péter (1965-) (vegyész) Comba Peter Hambley, Trevor W. Schmidlin, Reto Stebler, Sandra Várnagy Katalin (1961-) (vegyész)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM086035
Első szerző:	Buglyó Péter (vegyész)
Cím:	Interaction between the low molecular mass components of blood serum and the VO(iv)-DHP system (DHP = 1,2-dimethyl-3-hydroxy-4(1H)-pyridinone) / Péter Buglyó, Tamás Kiss, Erzsébet Kiss, Daniele Sanna, Eugenio Garribba, Giovanni Micera
Dátum:	2002
ISSN:	0300-9246 1364-5447
Megjegyzések:	In order to estimate the impact of the low molecular mass (l.m.m.) VO(IV) binders of blood serum on the potentially insulin-enhancing drug [VO(DHP)(2)] [DHP=1,2-dimethyl-3-hydroxy-4(1H)-pyridinone], the speciation in the binary system VO(IV)-DHP and in the ternary systems VO-DHP-ligand B (B=oxalate, lactate, citrate or phosphate) was studied by pH-potentiometry at 25.0degreesC and at an ionic strength I=0.2 mol dm(-3) (KCl). The binding modes of the complexes formed were determined by spectroscopic (electronic absorption and EPR) techniques. DHP was found to form stable mono and bis complexes via the coordination of (O,O) chelate(s). Through displacement of the oxo group of VO(), the tris complex is also formed, especially at a high excess of ligand. The results in the ternary systems demonstrate that, at physiological pH, none of the B ligands can compete with DHP; [VO(DHP)(2)] therefore seems to remain almost completely intact, even in the presence of citrate, the strongest competitor among these B ligands. These findings indicate that, for DHP, unlike maltol or picolinic acid, ternary complex formation and thus transformation reactions with the l.m.m. binders of biofluids, is almost negligible. From among the three carrier molecules, only DHP can efficiently compete with serum transferrin for binding of VO(IV).
Tárgyszavak:	Természettudományok Kémiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Journal of the Chemical Society. Dalton Transactions. - 11 (2002), p. 2275-2282. -
További szerzők:	Kiss Tamás (1950-) (vegyész) Kiss Erzsébet (vegyész) Sanna, Daniele (1956-) (vegyész) Garribba, Eugenio Micera, Giovanni
Pályázati támogatás:	T31896 OTKA F32235 OTKA
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	KLTEbibl000522
Első szerző:	Farkas Etelka (vegyész)
Cím:	Complex formation between transition metals and DL-aspartic acid-beta-hydroxamic acid (N-hydroxyasparagine) / Etelka Farkas, Péter Buglyó
Dátum:	1990
ISSN:	0300-9246 1364-5447
Megjegyzések:	Formation constants and assumptions concerning the bonding mode are reported for the complexes present in aqueous solution in the cobalt(II)-, nickel(II)-, copper(II)-, zinc(II)-, and iron(III)-DL-aspartic acid-β-hydroxamic acid (N-hydroxyasparagine, hasn) systems. The amino nitrogen, the hydroxamate nitrogen, and the carboxylate oxygen are the main co-ordinating donor atoms in the cobalt(II)- and nickel(II)-hasn complexes. The hydroxamate oxygens may also take part in co-ordination in the zinc(II)-hasn system. Very stable 1:1 and 1:2 binary complexes are formed in the iron(III)-hasn system, with tridentate co-ordination (hydroxamate and carboxylate oxygens) of the ligand. Mixed hydroxo complexes are proposed at pH > 5. A polymeric species, with composition [Cu4A4H-2]2-, is the most stable complex in the copper(II)-hasn system.
Tárgyszavak:	Természettudományok Kémiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Journal of the Chemical Society. Dalton Transactions. - 1990 : 5 (1990), p. 1549-1551. -
További szerzők:	Buglyó Péter (1965-) (vegyész)
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat DOI
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001-es BibID:	BIBFORM089121
Első szerző:	Song, Bin
Cím:	Acid-base and metal ion-binding properties of diaminopropyl D-glucopyranoside and diaminopropyl D-mannopyranoside compounds in aqueous solution / Bin Song, Parisa Mehrkhodavandi, Péter Buglyó, Yuji Mikata, Yoshie Shinohara, Kazumi Yoneda, Shigenobu Yano, Chris Orvig
Dátum:	2000
ISSN:	0300-9246 1364-5447
Megjegyzések:	For three sugar-appended diamine compounds (1,3-diamino-2-propyl beta-D-glucopyranoside (2-beta-D-Glc-pn), (2S)-2,3-diaminopropyl beta-D-glucopyranoside (1-beta-D-Glc-pn) and 1,3-diamino-2-propyl alpha-D-mannopyranoside (2-alpha-D-Man-pn)), acidity constants and stability constants with Ni2+, Cu2+ and Zn2+ have been measured (I = 0.16 M NaCl, 25 degrees C). The two acidity constants of each of the three sugar-diamines differ by 10(1.65) to 10(3.09), indicating that removal of the proton from HL+ species is more difficult than deprotonation from the fully protonated dication H2L2+. Statistical and polar effects, as well as the formation of an intramolecular hydrogen bond, may cause this increased stability of the HL+ species. The strength of the hydrogen bond and the degree of its formation (percentage) were estimated. The sugar ring has only a small influence on the intramolecular hydrogen bond formation. For the different metal ion-ligand systems, the predominating species in solution are quite different. In the Cu2+-1-beta-D-Glc-pn system, the dominant species are always CuL2+ and CuL22+ in the pH range 4 to 10, where the total ligand concentration is larger than total metal ion concentration. For Ni2+, NiL32+ is also important under these same conditions; however, for Zn2+, the hydrolysis species ZnL2(OH)(+) and ZnL2(OH)(2) predominate in the high pH region. All possible species in the system were included during the calculations, and the corresponding stability constants were determined. The hydrolysis of the metal ions themselves is important in some cases and all possible hydrolysis species were included in the fitting calculation. The stability constant plots log K versus pK yielded straight reference lines for 1,3-diamine or 1,2-diamine ligands, reflecting the complete absence of sugar oxygen atoms in the metal ion coordination. The linkage between the metal ion and the diamine residue depends solely on the basicity of the ligand.
Tárgyszavak:	Természettudományok Kémiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Journal of the Chemical Society. Dalton Transactions. - 2000 : 8 (2000), p. 1325-1333. -
További szerzők:	Mehrkhodavandi, Parisa Buglyó Péter (1965-) (vegyész) Mikata, Yuji Shinohara, Yoshie Yoneda, Kazumi Yano, Shigenobu Orvig, Chris
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