Structure-properties relationships of natural and synthetic molecules and their metal complexes

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Structure-properties relationships of natural and synthetic molecules and their metal complexes (en)
Корелација структуре и особина природних и синтетичких молекула и њихових комплекса са металима (sr)
Korelacija strukture i osobina prirodnih i sintetičkih molekula i njihovih kompleksa sa metalima (sr_RS)
Authors

Publications

Fluorimetric studies of micellar properties of cetyltrimethylammonium bromide in acetonitrile-water mixture

Janošević-Ležaić, Aleksandra; Pavun, Leposava; Đikanović, Danijela; Goronja, Jelena; Pejić, Nataša

(Society of Physical Chemists of Serbia, 2018)

TY  - CONF
AU  - Janošević-Ležaić, Aleksandra
AU  - Pavun, Leposava
AU  - Đikanović, Danijela
AU  - Goronja, Jelena
AU  - Pejić, Nataša
PY  - 2018
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/5217
AB  - ABSTRACT  Aggregation of the cationic surfactant cetyltrimethylammonium bromide 
(CTAB) in water (W) and acetonitrile-water (ACN-W) mixtures of different 
composition (10-20% (v/v) of ACN) was studied through fluorescence 
measurements. The CTAB critical micellar concentration (CMC) and the 
micelle aggregation number (Nagg) were determined at T = 22.0 °C. It was 
found that for increasing volume ratios of ACN to W, the CMC value attains 
a minimum (1.22 mM) at 15% (v/v) ACN while Nagg is continuously 
decreasing as ACN content in the ACN-W mixture increases. The effect of 
this dipolar aprotic solvent on the CTAB micelle formation can be interpreted 
in terms of its considerably hydrogen bonding ability and influence on balk phase properties (solvophobic effect).
PB  - Society of Physical Chemists of Serbia
C3  - Physical Chemistry 2018 (Proceedings) 14th International Conference  on Fundamental and Applied Aspects of  Physical Chemistry
T1  - Fluorimetric studies of micellar properties of cetyltrimethylammonium bromide in acetonitrile-water mixture
VL  - II
SP  - 867
EP  - 870
UR  - https://hdl.handle.net/21.15107/rcub_farfar_5217
ER  - 
@conference{
author = "Janošević-Ležaić, Aleksandra and Pavun, Leposava and Đikanović, Danijela and Goronja, Jelena and Pejić, Nataša",
year = "2018",
abstract = "ABSTRACT  Aggregation of the cationic surfactant cetyltrimethylammonium bromide 
(CTAB) in water (W) and acetonitrile-water (ACN-W) mixtures of different 
composition (10-20% (v/v) of ACN) was studied through fluorescence 
measurements. The CTAB critical micellar concentration (CMC) and the 
micelle aggregation number (Nagg) were determined at T = 22.0 °C. It was 
found that for increasing volume ratios of ACN to W, the CMC value attains 
a minimum (1.22 mM) at 15% (v/v) ACN while Nagg is continuously 
decreasing as ACN content in the ACN-W mixture increases. The effect of 
this dipolar aprotic solvent on the CTAB micelle formation can be interpreted 
in terms of its considerably hydrogen bonding ability and influence on balk phase properties (solvophobic effect).",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical Chemistry 2018 (Proceedings) 14th International Conference  on Fundamental and Applied Aspects of  Physical Chemistry",
title = "Fluorimetric studies of micellar properties of cetyltrimethylammonium bromide in acetonitrile-water mixture",
volume = "II",
pages = "867-870",
url = "https://hdl.handle.net/21.15107/rcub_farfar_5217"
}
Janošević-Ležaić, A., Pavun, L., Đikanović, D., Goronja, J.,& Pejić, N.. (2018). Fluorimetric studies of micellar properties of cetyltrimethylammonium bromide in acetonitrile-water mixture. in Physical Chemistry 2018 (Proceedings) 14th International Conference  on Fundamental and Applied Aspects of  Physical Chemistry
Society of Physical Chemists of Serbia., II, 867-870.
https://hdl.handle.net/21.15107/rcub_farfar_5217
Janošević-Ležaić A, Pavun L, Đikanović D, Goronja J, Pejić N. Fluorimetric studies of micellar properties of cetyltrimethylammonium bromide in acetonitrile-water mixture. in Physical Chemistry 2018 (Proceedings) 14th International Conference  on Fundamental and Applied Aspects of  Physical Chemistry. 2018;II:867-870.
https://hdl.handle.net/21.15107/rcub_farfar_5217 .
Janošević-Ležaić, Aleksandra, Pavun, Leposava, Đikanović, Danijela, Goronja, Jelena, Pejić, Nataša, "Fluorimetric studies of micellar properties of cetyltrimethylammonium bromide in acetonitrile-water mixture" in Physical Chemistry 2018 (Proceedings) 14th International Conference  on Fundamental and Applied Aspects of  Physical Chemistry, II (2018):867-870,
https://hdl.handle.net/21.15107/rcub_farfar_5217 .

Estimation of angiotensin-converting enzyme inhibitors protein binding degree using chromatographic hydrophobicity data

Trbojević-Stanković, Jasna; Aleksić, Mirjana; Odović, Jadranka

(Srpsko lekarsko društvo, Beograd, 2015)

TY  - JOUR
AU  - Trbojević-Stanković, Jasna
AU  - Aleksić, Mirjana
AU  - Odović, Jadranka
PY  - 2015
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2485
AB  - Introduction Angiotensin-converting enzyme (ACE) inhibitors represent a significant group of drugs primarily used in the treatment of hypertension and congestive heart failure. Objective Selected ACE inhibitors (enalapril, quinapril, fosinopril, lisinopril, cilazapril) were studied in order to establish a fast and easy estimation method of their plasma protein binding degree based on their lipophilicity data. Methods Chromatographic hydrophobicity data (parameter C0) were obtained on cellulose layers under conditions of normal-phase thin-layer chromatography (NPTLC), using different binary solvent systems. The ACE inhibitors lipophilicity descriptors (logP) values were calculated using the software package Virtual Computational Chemistry Laboratory. The ACE inhibitors plasma protein binding data were collected from relevant literature. Results ACE inhibitors protein binding data varied from negligible (lisinopril) to 99% (fosinopril). The calculated lipophilicity descriptors, logPKOWWIN values ranged from -0.94 (lisinopril) to 6.61 (fosinopril). Good correlations were established between plasma protein binding values and calculated logPKOWWIN values (R2=0.8026) as well as chromatographic hydrophobicity data, C0 parameters (R2=0.7662). Even though good correlation coefficients (R2) were obtained in both relations, unacceptable probability value with p>0.05 was found in relation between protein binding data and calculated logPKOWWIN values. Subsequently, taking into consideration the request for probability value lower than 0.05, a better relationship was observed between protein binding data and chromatographically obtained hydrophobicity parameters C0 values. Conclusion Cellulose layers are easily available and cost effective sorbent to assess hydrophobicity. Experimentally obtained data on ACE inhibitors hydrophobicity and plasma protein binding estimation are important parameters in evaluating bioavailability of these drugs.
AB  - Uvod Inhibitori angiotenzin-konvertujućeg enzima (ACE) su velika grupa lekova izuzetno značajna u lečenju hipertenzije. Cilj rada Analizirani su izabrani ASE-inhibitori (enalapril, kvinapril, fozinopril, lizinopril, cilazapril) radi postavljanja novog pristupa pogodnog za brzu i jednostavnu procenu vezivanja za proteine plazme na osnovu njihovih parametara lipofilnosti. Metode rada Hromatografski parametri hidrofobnosti (vrednosti C0) dobijeni su u uslovima normalnofazne hromatografije (NPTLC) na tankom sloju celuloze, uz korišćenje dvokomponentnih mobilnih faza. Vrednosti parametara lipofilnosti ACE-inhibitora (logP) izračunate su pomoću softverskog paketa Virtual Computational Chemistry Laboratory. Podaci o procentu vezivanja ACE-inhibitora za proteine plazme preuzeti su iz odgovarajuće literature. Rezultati Procenat vezivanja za proteine plazme ispitivanih ASE-inhibitora bio je u opsegu od 0% (lizinopril) do 99% (fozinopril), dok su vrednosti izračunatih parametara lipofilnosti (vrednosti logP KOWWIN) bile od -0,94 (lizinopril) do 6,61 (fozinopril). Dobijene su zadovoljavajuće korelacije između vrednosti vezivanja ASE- inhibitora za proteine plazme i izračunatih logP KOWWIN vrednosti (koeficijent korelacije R2 bio je 0,8026), kao i hromatografski dobijenih parametara hidrofobnosti, C0 (R2=0,7662). Iako su zadovoljavajući koeficijenti korelacije dobijeni u obe relacije, neprihvatljive vrednosti verovatnoće (p>0,05) dobijene su za zavisnost između vrednosti vezivanja ASE-inhibitora za proteine plazme i izračunatih logP KOWWIN vrednosti. Stoga se, uzimajući u obzir zahtev da vrednosti verovatnoće budu niže od 0,05, boljom može smatrati zavisnost između vrednosti vezivanja ASE-inhibitora za proteine plazme i hromatografski dobijenih parametara hidrofobnosti. Zaključak Primena hidrofobnih parametara ASE-inhibitora eksperimentalno dobijenih u uslovima normalnofazne hromatografije na tankom sloju celuloze za procenu stepena njihovog vezivanja za proteine plazme značajna je za razvoj i ispitivanje lekova ove grupe i procenu njihove bioraspoloživosti.
PB  - Srpsko lekarsko društvo, Beograd
T2  - Srpski arhiv za celokupno lekarstvo
T1  - Estimation of angiotensin-converting enzyme inhibitors protein binding degree using chromatographic hydrophobicity data
T1  - Procena stepena vezivanja inhibitora angiotenzin-konvertujućeg enzima za proteine plazme primenom hromatografski dobijenih parametara hidrofobnosti
VL  - 143
IS  - 1-2
SP  - 50
EP  - 55
DO  - 10.2298/SARH1502050T
ER  - 
@article{
author = "Trbojević-Stanković, Jasna and Aleksić, Mirjana and Odović, Jadranka",
year = "2015",
abstract = "Introduction Angiotensin-converting enzyme (ACE) inhibitors represent a significant group of drugs primarily used in the treatment of hypertension and congestive heart failure. Objective Selected ACE inhibitors (enalapril, quinapril, fosinopril, lisinopril, cilazapril) were studied in order to establish a fast and easy estimation method of their plasma protein binding degree based on their lipophilicity data. Methods Chromatographic hydrophobicity data (parameter C0) were obtained on cellulose layers under conditions of normal-phase thin-layer chromatography (NPTLC), using different binary solvent systems. The ACE inhibitors lipophilicity descriptors (logP) values were calculated using the software package Virtual Computational Chemistry Laboratory. The ACE inhibitors plasma protein binding data were collected from relevant literature. Results ACE inhibitors protein binding data varied from negligible (lisinopril) to 99% (fosinopril). The calculated lipophilicity descriptors, logPKOWWIN values ranged from -0.94 (lisinopril) to 6.61 (fosinopril). Good correlations were established between plasma protein binding values and calculated logPKOWWIN values (R2=0.8026) as well as chromatographic hydrophobicity data, C0 parameters (R2=0.7662). Even though good correlation coefficients (R2) were obtained in both relations, unacceptable probability value with p>0.05 was found in relation between protein binding data and calculated logPKOWWIN values. Subsequently, taking into consideration the request for probability value lower than 0.05, a better relationship was observed between protein binding data and chromatographically obtained hydrophobicity parameters C0 values. Conclusion Cellulose layers are easily available and cost effective sorbent to assess hydrophobicity. Experimentally obtained data on ACE inhibitors hydrophobicity and plasma protein binding estimation are important parameters in evaluating bioavailability of these drugs., Uvod Inhibitori angiotenzin-konvertujućeg enzima (ACE) su velika grupa lekova izuzetno značajna u lečenju hipertenzije. Cilj rada Analizirani su izabrani ASE-inhibitori (enalapril, kvinapril, fozinopril, lizinopril, cilazapril) radi postavljanja novog pristupa pogodnog za brzu i jednostavnu procenu vezivanja za proteine plazme na osnovu njihovih parametara lipofilnosti. Metode rada Hromatografski parametri hidrofobnosti (vrednosti C0) dobijeni su u uslovima normalnofazne hromatografije (NPTLC) na tankom sloju celuloze, uz korišćenje dvokomponentnih mobilnih faza. Vrednosti parametara lipofilnosti ACE-inhibitora (logP) izračunate su pomoću softverskog paketa Virtual Computational Chemistry Laboratory. Podaci o procentu vezivanja ACE-inhibitora za proteine plazme preuzeti su iz odgovarajuće literature. Rezultati Procenat vezivanja za proteine plazme ispitivanih ASE-inhibitora bio je u opsegu od 0% (lizinopril) do 99% (fozinopril), dok su vrednosti izračunatih parametara lipofilnosti (vrednosti logP KOWWIN) bile od -0,94 (lizinopril) do 6,61 (fozinopril). Dobijene su zadovoljavajuće korelacije između vrednosti vezivanja ASE- inhibitora za proteine plazme i izračunatih logP KOWWIN vrednosti (koeficijent korelacije R2 bio je 0,8026), kao i hromatografski dobijenih parametara hidrofobnosti, C0 (R2=0,7662). Iako su zadovoljavajući koeficijenti korelacije dobijeni u obe relacije, neprihvatljive vrednosti verovatnoće (p>0,05) dobijene su za zavisnost između vrednosti vezivanja ASE-inhibitora za proteine plazme i izračunatih logP KOWWIN vrednosti. Stoga se, uzimajući u obzir zahtev da vrednosti verovatnoće budu niže od 0,05, boljom može smatrati zavisnost između vrednosti vezivanja ASE-inhibitora za proteine plazme i hromatografski dobijenih parametara hidrofobnosti. Zaključak Primena hidrofobnih parametara ASE-inhibitora eksperimentalno dobijenih u uslovima normalnofazne hromatografije na tankom sloju celuloze za procenu stepena njihovog vezivanja za proteine plazme značajna je za razvoj i ispitivanje lekova ove grupe i procenu njihove bioraspoloživosti.",
publisher = "Srpsko lekarsko društvo, Beograd",
journal = "Srpski arhiv za celokupno lekarstvo",
title = "Estimation of angiotensin-converting enzyme inhibitors protein binding degree using chromatographic hydrophobicity data, Procena stepena vezivanja inhibitora angiotenzin-konvertujućeg enzima za proteine plazme primenom hromatografski dobijenih parametara hidrofobnosti",
volume = "143",
number = "1-2",
pages = "50-55",
doi = "10.2298/SARH1502050T"
}
Trbojević-Stanković, J., Aleksić, M.,& Odović, J.. (2015). Estimation of angiotensin-converting enzyme inhibitors protein binding degree using chromatographic hydrophobicity data. in Srpski arhiv za celokupno lekarstvo
Srpsko lekarsko društvo, Beograd., 143(1-2), 50-55.
https://doi.org/10.2298/SARH1502050T
Trbojević-Stanković J, Aleksić M, Odović J. Estimation of angiotensin-converting enzyme inhibitors protein binding degree using chromatographic hydrophobicity data. in Srpski arhiv za celokupno lekarstvo. 2015;143(1-2):50-55.
doi:10.2298/SARH1502050T .
Trbojević-Stanković, Jasna, Aleksić, Mirjana, Odović, Jadranka, "Estimation of angiotensin-converting enzyme inhibitors protein binding degree using chromatographic hydrophobicity data" in Srpski arhiv za celokupno lekarstvo, 143, no. 1-2 (2015):50-55,
https://doi.org/10.2298/SARH1502050T . .
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Acid-base equilibria of the aqua adducts of Ru(II) arene complexes with functionalised pyridines

Dražić, Branka; Grgurić-Sipka, Sanja; Ivanović, Ivanka; Tešić, Živoslav; Popović, Gordana

(Springer, New York, 2012)

TY  - JOUR
AU  - Dražić, Branka
AU  - Grgurić-Sipka, Sanja
AU  - Ivanović, Ivanka
AU  - Tešić, Živoslav
AU  - Popović, Gordana
PY  - 2012
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1723
AB  - Acid-base equilibria of the aqua adducts of Ru(II) arene complexes, general formulae [(eta(6)-p-cymene)Ru (L1-3)Cl-2] where L-1 = 3-acetylpyridine (1), L-2 = 4-acetylpyridine (2) and L-3 = 2-amino-5-chloropyridine (3), then [(eta(6)-p-cymene)Ru(HL4)Cl-2] with HL4 = isonicotinic acid (4); [(eta(6)-p-cymene)Ru(HL5-8)Cl] where H2L5 = 2,3-pyridine dicarboxylic acid (5), H2L6 = 2,4-pyridine dicarboxylic acid (6), H2L7 = 2,5-pyridine dicarboxylic acid (7) and H2L8 = 2,6-pyridine dicarboxylic acid (8) have been studied. pK (a) values were determined by potentiometry at 25 A degrees C and constant ionic strength of 0.1 M NaNO3. The assumed equilibria were confirmed by UV and H-1-NMR spectroscopy.
PB  - Springer, New York
T2  - Journal of the Iranian Chemical Society
T1  - Acid-base equilibria of the aqua adducts of Ru(II) arene complexes with functionalised pyridines
VL  - 9
IS  - 1
SP  - 7
EP  - 12
DO  - 10.1007/s13738-011-0001-3
ER  - 
@article{
author = "Dražić, Branka and Grgurić-Sipka, Sanja and Ivanović, Ivanka and Tešić, Živoslav and Popović, Gordana",
year = "2012",
abstract = "Acid-base equilibria of the aqua adducts of Ru(II) arene complexes, general formulae [(eta(6)-p-cymene)Ru (L1-3)Cl-2] where L-1 = 3-acetylpyridine (1), L-2 = 4-acetylpyridine (2) and L-3 = 2-amino-5-chloropyridine (3), then [(eta(6)-p-cymene)Ru(HL4)Cl-2] with HL4 = isonicotinic acid (4); [(eta(6)-p-cymene)Ru(HL5-8)Cl] where H2L5 = 2,3-pyridine dicarboxylic acid (5), H2L6 = 2,4-pyridine dicarboxylic acid (6), H2L7 = 2,5-pyridine dicarboxylic acid (7) and H2L8 = 2,6-pyridine dicarboxylic acid (8) have been studied. pK (a) values were determined by potentiometry at 25 A degrees C and constant ionic strength of 0.1 M NaNO3. The assumed equilibria were confirmed by UV and H-1-NMR spectroscopy.",
publisher = "Springer, New York",
journal = "Journal of the Iranian Chemical Society",
title = "Acid-base equilibria of the aqua adducts of Ru(II) arene complexes with functionalised pyridines",
volume = "9",
number = "1",
pages = "7-12",
doi = "10.1007/s13738-011-0001-3"
}
Dražić, B., Grgurić-Sipka, S., Ivanović, I., Tešić, Ž.,& Popović, G.. (2012). Acid-base equilibria of the aqua adducts of Ru(II) arene complexes with functionalised pyridines. in Journal of the Iranian Chemical Society
Springer, New York., 9(1), 7-12.
https://doi.org/10.1007/s13738-011-0001-3
Dražić B, Grgurić-Sipka S, Ivanović I, Tešić Ž, Popović G. Acid-base equilibria of the aqua adducts of Ru(II) arene complexes with functionalised pyridines. in Journal of the Iranian Chemical Society. 2012;9(1):7-12.
doi:10.1007/s13738-011-0001-3 .
Dražić, Branka, Grgurić-Sipka, Sanja, Ivanović, Ivanka, Tešić, Živoslav, Popović, Gordana, "Acid-base equilibria of the aqua adducts of Ru(II) arene complexes with functionalised pyridines" in Journal of the Iranian Chemical Society, 9, no. 1 (2012):7-12,
https://doi.org/10.1007/s13738-011-0001-3 . .
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