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Di P, Chen J, Liu L, Li W, Tang Y, Liu G. In silico prediction of binding capacity and interaction forces of organic compounds with α- and β-cyclodextrins. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112585] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Lopedota A, Cutrignelli A, Laquintana V, Franco M, Donelli D, Ragni L, Tongiani S, Denora N. β-cyclodextrin in personal care formulations: role on the complexation of malodours causing molecules. Int J Cosmet Sci 2015; 37:438-45. [DOI: 10.1111/ics.12215] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 02/07/2015] [Indexed: 11/28/2022]
Affiliation(s)
- A. Lopedota
- Department of Pharmacy-Drug Sciences; University of Bari “Aldo Moro”; 4 Orabona Street 70125 Bari Italy
| | - A. Cutrignelli
- Department of Pharmacy-Drug Sciences; University of Bari “Aldo Moro”; 4 Orabona Street 70125 Bari Italy
| | - V. Laquintana
- Department of Pharmacy-Drug Sciences; University of Bari “Aldo Moro”; 4 Orabona Street 70125 Bari Italy
| | - M. Franco
- Department of Pharmacy-Drug Sciences; University of Bari “Aldo Moro”; 4 Orabona Street 70125 Bari Italy
| | - D. Donelli
- ACRAF Angelini Research Center; Piazzale della Stazione 00040 Santa Palomba Roma Italy
| | - L. Ragni
- ACRAF Angelini Research Center; Piazzale della Stazione 00040 Santa Palomba Roma Italy
| | - S. Tongiani
- ACRAF Angelini Research Center; Piazzale della Stazione 00040 Santa Palomba Roma Italy
| | - N. Denora
- Department of Pharmacy-Drug Sciences; University of Bari “Aldo Moro”; 4 Orabona Street 70125 Bari Italy
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Mohamed MH, Wilson LD, Headley JV, Peru KM. Sequestration of naphthenic acids from aqueous solution using β-cyclodextrin-based polyurethanes. Phys Chem Chem Phys 2011; 13:1112-22. [DOI: 10.1039/c0cp00421a] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mohamed MH, Wilson LD, Headley JV, Peru KM. A spectral displacement study of cyclodextrin/naphthenic acids inclusion complexes. CAN J CHEM 2009. [DOI: 10.1139/v09-140] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The spectral displacement technique has been used to obtain 1:1 β-cyclodextrin (β-CD)/carboxylate anion equilibrium binding constants (K2) for some complex mixtures of naphthenic acids (NAs) and some examples of single-component NAs in aqueous solution. Three specific examples of single-component NAs were chosen with variable Z values as follows: 2-hexyldecanoic acid (Z = 0; S1), trans-4-pentylcyclohexanecarboxylic acid (Z = –2; S2), and dicyclohexylacetic acid (Z = –4; S3). The estimated K2 values for S1, S2, and S3 are as follows: 1.42 × 103 M–1, 52.2 × 104 M–1, and 13.1 × 104 M–1, respectively. The corresponding K2 values are 2.34 × 104 M–1 and 1.27 × 104 M–1 for commercial (Fluka) and industrial (Syncrude) sourced NAs, respectively. The magnitude of K2 for 1:1 complexes formed between β-CD and S1, S2, or S3 did not correlate with the degree of hydrogen deficiency (Z-series) but there was a correlation with the size of the guest molecules (n) examined in this study. The correlation between complex stability and the relative size of the lipophilic fragments of the guest molecule are related to the importance of the hydrophobic effect for inclusion of such carboxylic acid guest molecules within β-CD.
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Affiliation(s)
- Mohamed H. Mohamed
- Department of Chemistry, Thorvaldson Building, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
- Water Science and Technology Directorate, Environment Canada, 11 Innovation Boulevard, Saskatoon, SK S7N 3H5, Canada
| | - Lee D. Wilson
- Department of Chemistry, Thorvaldson Building, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
- Water Science and Technology Directorate, Environment Canada, 11 Innovation Boulevard, Saskatoon, SK S7N 3H5, Canada
| | - John V. Headley
- Department of Chemistry, Thorvaldson Building, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
- Water Science and Technology Directorate, Environment Canada, 11 Innovation Boulevard, Saskatoon, SK S7N 3H5, Canada
| | - Kerry M. Peru
- Department of Chemistry, Thorvaldson Building, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
- Water Science and Technology Directorate, Environment Canada, 11 Innovation Boulevard, Saskatoon, SK S7N 3H5, Canada
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NMR spectroscopic study of cyclodextrin inclusion complexes with A-007 prodrugs. Carbohydr Res 2008; 343:1180-90. [DOI: 10.1016/j.carres.2008.03.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2007] [Revised: 03/06/2008] [Accepted: 03/09/2008] [Indexed: 11/20/2022]
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Másson M, Sigurdardóttir BV, Matthíasson K, Loftsson T. Investigation of drug-cyclodextrin complexes by a phase-distribution method: some theoretical and practical considerations. Chem Pharm Bull (Tokyo) 2005; 53:958-64. [PMID: 16079528 DOI: 10.1248/cpb.53.958] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The purpose of the study was to evaluate an octanol-water phase distribution method for investigation of drug/cyclodextrin (D/CD) complexes and to compare stability constant values obtained by this method to values obtained by the phase solubility method. A general equation for determination of 1 : 1 D/CD complex stability constant (K1 : 1) from the slope of a phase-distribution diagram (a diagram of the reciprocal of the apparent partition coefficient vs. the total CD concentration) was derived. The equation accounted for the possible inclusion of the organic solvent in the CD cavity and the gradual saturation of the CD binding with increasing concentration of the guest compound. This method was used to determine K1 : 1 for 2-hydroxypropyl-beta-cyclodextrin (HPbetaCD) complexes of hydrocortisone, prednisolone, diazepam, beta-estradiol and diethylstilbestrol. These values were comparable to K1 : 1 values determined by the phase-solubility method. The phase-distribution method could also be applied to determine stability constants for the neutral and ionic forms of the weakly acidic drugs, naproxen and triclosan and the weakly basic drug lidocaine. The phase-distribution method is a very versatile and fast method and has the advantage, compared to the phase-solubility method, that it only requires very small drug samples. Thus, this method would be suitable for screening of new drug candidates.
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Affiliation(s)
- Már Másson
- Faculty of Pharmacy, University of Iceland, Hofsvallagata 53, IS-107 Reykjavik, Iceland.
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He J, Cheung AP, Struble E, Wang E, Liu P. Enantiomeric separation of an aryloxyphenoxypropanoic acid by CE and LC. J Pharm Biomed Anal 2000; 22:583-95. [PMID: 10766375 DOI: 10.1016/s0731-7085(00)00231-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A capillary electrophoresis (CE) and an high performance liquid chromatography (HPLC) chiral separation have been developed for an aryloxyphenoxypropanoic acid, 2-[4-[(7-chloro-2-quinoxalinyl)oxy]phenoxy]propanoic acid, a new antitumor agent. The racemic mixture is analyzed, without derivatization, as the free acids. The CE assay is based on inclusion complexation with hydroxypropyl-beta-cyclodextrin. HPLC separation is achieved with a CSP column with the glycopeptide, teicoplanin, as the chiral selector. Both methods give baseline resolution to the R-and S-isomers. The methods were validated for assay and for optical purity assessment of the R-isomer. For assay, the HPLC method is precise (RSD < 0.6%), accurate (error, 0.5%) and linear (r2 = 0.9998). It is able to precisely (RSD = 0.5%) and accurately (error, 0.9%) detect 0.3-6.0% of one isomer (S) in the other (R). The CE assay is much less precise and accurate than HPLC. It is a good alternative to separate and detect the enantiomers, however.
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Affiliation(s)
- J He
- Biopharmaceutical Development Division, SRI International, Menlo Park, CA, USA.
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