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Guo J, Zhang L, Wang M, Liu Y, Fei C. Inclusion Complexes of Ethanamizuril with β- and Hydroxypropyl-β-Cyclodextrin in Aqueous Solution and in Solid State: A Comparison Study. Molecules 2024; 29:2164. [PMID: 38792026 PMCID: PMC11124191 DOI: 10.3390/molecules29102164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 04/28/2024] [Accepted: 04/29/2024] [Indexed: 05/26/2024] Open
Abstract
Ethanamizuril (EZL) is a new anticoccidial drug developed by our Shanghai Veterinary Research Institute. Since EZL is almost insoluble in water, we conducted a study to improve the solubility of EZL by forming inclusion complexes with β-cyclodextrin (β-CD) and hydroxypropyl-β-cyclodextrin (HP-β-CD). In this study, we performed molecular docking and then systematically compared the interactions of EZL with β-CD and HP-β-CD in both aqueous solution and the solid state, aiming to elucidate the solubilization effect and mechanism of cyclodextrins (CDs). The interactions were also examined in the solid state using DSC, PXRD, and FT-IR. The interactions of EZL with CDs in an aqueous solution were investigated using PSA, UV-vis spectroscopy, MS, 1H NMR, and 2D ROESY. The results of phase solubility experiments revealed that both β-CD and HP-β-CD formed inclusion complexes with EZL in a 1:1 molar ratio. Among them, HP-β-CD exhibited higher Kf (stability constant) and CE (complexation efficiency) values as well as a stronger solubilization effect. Furthermore, the two cyclodextrins were found to interact with EZL in a similar manner. The results of our FT-IR and 2D ROESY experiments are in agreement with the theoretical results derived from molecular simulations. These results indicated that intermolecular hydrogen bonds existing between the C=O group on the triazine ring of EZL and the O-H group of CDs, as well as the hydrophobic interactions between the hydrogen on the benzene ring of EZL and the hydrogen of CDs, played crucial roles in the formation of EZL/CD inclusion complexes. The results of this study can lay the foundation for the future development of high-concentration drinking water delivery formulations for EZL.
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Affiliation(s)
- Juan Guo
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (J.G.); (M.W.); (Y.L.); (C.F.)
| | - Lifang Zhang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (J.G.); (M.W.); (Y.L.); (C.F.)
- Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs, Shanghai 200241, China
| | - Mi Wang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (J.G.); (M.W.); (Y.L.); (C.F.)
- Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs, Shanghai 200241, China
| | - Yingchun Liu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (J.G.); (M.W.); (Y.L.); (C.F.)
- Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs, Shanghai 200241, China
| | - Chenzhong Fei
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (J.G.); (M.W.); (Y.L.); (C.F.)
- Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs, Shanghai 200241, China
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Anconi CPA, Souza LCA. Multi-equilibrium approach to study cyclodextrins host–guest systems with GFN2-xTB quantum method: A case study of phosphorothioates included in β-cyclodextrin. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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3
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A Composite System Based upon Hydroxypropyl Cyclodextrins and Soft Hydrogel Contact Lenses for the Delivery of Therapeutic Doses of Econazole to the Cornea, In Vitro. Pharmaceutics 2022; 14:pharmaceutics14081631. [PMID: 36015257 PMCID: PMC9412546 DOI: 10.3390/pharmaceutics14081631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/15/2022] [Accepted: 07/25/2022] [Indexed: 11/26/2022] Open
Abstract
Fungal keratitis, a disease in which the cornea becomes inflamed due to an invasive fungal infection, remains difficult to treat due in part to limited choices of available treatments. Topical eye drops are first-line treatment, but can be ineffective as low levels of drug reach the target site due to precorneal losses and the impenetrability of the cornea. The aim of this study was to determine the corneal delivery of econazole using a novel topical enhancement approach using a composite delivery system based upon cyclodextrins and soft hydrogel contact lenses. Excess econazole nitrate was added to hydroxypropyl-α-cyclodextrin (HP-α-CD) and hydroxypropyl-β-cyclodextrin (HP-β-CD) solutions, and the solubility determined using HPLC. Proprietary soft hydrogel contact lenses were then impregnated with saturated solutions and applied to freshly enucleated porcine eyeballs. Econazole nitrate ‘eye drops’ at the same concentrations served as the control. After 6 h, the corneas were excised and drug-extracted, prior to quantification using HPLC. Molecular dynamic simulations were performed to examine econazole−HP-β-CD inclusion complexation and dissociation. The minimum inhibitory concentration (MIC) of econazole was determined against four fungal species associated with keratitis, and these data were then related to the amount of drug delivered to the cornea, using an average corneal volume of 0.19 mL. The solubility of econazole increased greatly in the presence of HP-β-CD and more so with HP-α-CD (p < 0.001), with ratios >> 2. Hydrogel contact lenses delivered ×2.8 more drug across the corneas in comparison to eye drops alone, and ×5 more drug delivered to the cornea when cyclodextrin was present. Molecular graphics demonstrated dynamic econazole release, which would create transient enhanced drug concentration at the cornea surface. The solution-only drops achieved the least satisfactory result, producing sub-MIC levels with factors of ×0.81 for both Fusarium semitectum and Fusarium solani and ×0.40 for both Scolecobasidium tshawytschae and Bipolaris hawaiiensis. All other treatments delivered econazole at > MIC for all four fungal species. The efficacies of the delivery platforms evaluated were ranked: HP-α-CD contact lens > HP-β-CD contact lens > contact lens = HP-α-CD drops > HP-β-CD drops > solution-only drops. In summary, the results in this study have demonstrated that a composite drug delivery system based upon econazole−HP-β-CD inclusion complexes loaded into contact lenses can achieve significantly greater corneal drug delivery with the potential for improved clinical responses.
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Cyclodextrin Multicomponent Complexes: Pharmaceutical Applications. Pharmaceutics 2021; 13:pharmaceutics13071099. [PMID: 34371790 PMCID: PMC8309128 DOI: 10.3390/pharmaceutics13071099] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/13/2021] [Accepted: 07/15/2021] [Indexed: 11/16/2022] Open
Abstract
Cyclodextrins (CDs) are naturally available water-soluble cyclic oligosaccharides widely used as carriers in the pharmaceutical industry for their ability to modulate several properties of drugs through the formation of drug-CD complexes. The addition of an auxiliary substance when forming multicomponent complexes is an adequate strategy to enhance complexation efficiency and to facilitate the therapeutic applicability of different drugs. This review discusses multicomponent complexation using amino acids; organic acids and bases; and water-soluble polymers as auxiliary excipients. Special attention is given to improved properties by including information on the solubility, dissolution, permeation, stability and bioavailability of several relevant drugs. In addition, the use of multicomponent CD complexes to enhance therapeutic drug effects is summarized.
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Li J, Li Z, Liang Z, Han L, Feng H, He S, Zhang J. Fabrication of a drug delivery system that enhances antifungal drug corneal penetration. Drug Deliv 2018; 25:938-949. [PMID: 29658325 PMCID: PMC6058611 DOI: 10.1080/10717544.2018.1461278] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Fungal keratitis (FK) remains a severe eye disease, and effective therapies are limited by drug shortages and critical ocular barriers. Despite the high antifungal potency and broad spectrum of econazole, its strong irritant and insolubility in water hinder its ocular application. We designed and fabricated a new drug delivery system based on a polymeric vector for the ocular antifungal application of econazole. This novel system integrates the advantages of its constituent units and exhibits superior comprehensive performance. Using the new system, drug content was significantly increased more than 600 folds. The results of in vivo and in vitro experiments demonstrated that the econazole-loaded formulation exhibited significantly enhanced corneal penetration after a single topical ocular administration, excellent antifungal activity, and good tolerance in rabbits. Drug concentrations and ocular relative bioavailability in the cornea were 59- and 29-time greater than those in the control group, respectively. Following the topical administration of one eye drop (50 μL of 0.3% w/v econazole) in fungus-infected rabbits, a high concentration of antimycotic drugs in the cornea and aqueous humor was sustained and effective for 4 h. The mechanism of corneal penetration was also explored using dual fluorescent labeling. This novel drug delivery system is a promising therapeutic approach for oculomycosis and could serve as a candidate strategy for use with various hydrophobic drugs to overcome barriers in the treatment of many other ocular diseases.
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Affiliation(s)
- Jingguo Li
- a Henan Key Laboratory of Ophthalmology and Visual Science , Henan Eye Hospital, People's Hospital of Zhengzhou University , Zhengzhou , P. R. China
| | - Zhanrong Li
- a Henan Key Laboratory of Ophthalmology and Visual Science , Henan Eye Hospital, People's Hospital of Zhengzhou University , Zhengzhou , P. R. China
| | - Zhen Liang
- a Henan Key Laboratory of Ophthalmology and Visual Science , Henan Eye Hospital, People's Hospital of Zhengzhou University , Zhengzhou , P. R. China
| | - Lei Han
- a Henan Key Laboratory of Ophthalmology and Visual Science , Henan Eye Hospital, People's Hospital of Zhengzhou University , Zhengzhou , P. R. China
| | - Huayang Feng
- a Henan Key Laboratory of Ophthalmology and Visual Science , Henan Eye Hospital, People's Hospital of Zhengzhou University , Zhengzhou , P. R. China
| | - Siyu He
- a Henan Key Laboratory of Ophthalmology and Visual Science , Henan Eye Hospital, People's Hospital of Zhengzhou University , Zhengzhou , P. R. China
| | - Junjie Zhang
- a Henan Key Laboratory of Ophthalmology and Visual Science , Henan Eye Hospital, People's Hospital of Zhengzhou University , Zhengzhou , P. R. China
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Evaluation of molecular chaperone drug function: Regorafenib and β-cyclodextrins. Colloids Surf B Biointerfaces 2017; 153:61-68. [DOI: 10.1016/j.colsurfb.2017.02.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 12/27/2016] [Accepted: 02/06/2017] [Indexed: 12/19/2022]
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7
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Inclusion Complexes of Nateglinide with HP–β–CD and L-Arginine for Solubility and Dissolution Enhancement: Preparation, Characterization, and Molecular Docking Study. J Pharm Innov 2017. [DOI: 10.1007/s12247-017-9275-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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8
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Mennini N, Maestrelli F, Cirri M, Mura P. Analysis of physicochemical properties of ternary systems of oxaprozin with randomly methylated-ß-cyclodextrin and l-arginine aimed to improve the drug solubility. J Pharm Biomed Anal 2016; 129:350-358. [PMID: 27454086 DOI: 10.1016/j.jpba.2016.07.024] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 07/15/2016] [Accepted: 07/16/2016] [Indexed: 10/21/2022]
Abstract
The influence of l-arginine on the complexing and solubilizing power of randomly-methylated-β-cyclodextrin (RameβCD) towards oxaprozin, a very poorly soluble anti-inflammatory drug, was examined. The interactions between the components were investigated both in solution, by phase-solubility analysis, and in the solid state, by differential scanning calorimetry, FTIR and X-ray powder diffractometry. The morphology of the solid products was examined by Scanning Electron Microscopy. Results of phase-solubility studies indicated that addition of arginine enhanced the RameβCD complexing and solubilizing power of about 3.0 and 4.5 times, respectively, in comparison with the binary complex (both at pH≈6.8). The effect of arginine was not simply additive, but synergistic, being the ternary system solubility higher than the sum of those of the respective drug-CD and drug-arginine binary systems. Solid equimolar ternary systems were prepared by physical mixing, co-grinding, coevaporation and kneading techniques, to explore the effect of the preparation method on the physicochemical properties of the final products. The ternary co-ground product exhibited a dramatic increase in both drug dissolution efficiency and percent dissolved at 60min, whose values (83.6 and 97.1, respectively) were about 3 times higher than the sum of those given by the respective drug-CD and drug-aminoacid binary systems. Therefore, the ternary co-ground system with arginine and RameβCD appears as a very valuable product for the development of new more effective delivery systems of oxaprozin, with improved safety and bioavailability.
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Affiliation(s)
- Natascia Mennini
- Department of Chemistry, School of Human Health Sciences, University of Florence, Via Schiff 6, Sesto Fiorentino I-50019, Florence, Italy
| | - Francesca Maestrelli
- Department of Chemistry, School of Human Health Sciences, University of Florence, Via Schiff 6, Sesto Fiorentino I-50019, Florence, Italy
| | - Marzia Cirri
- Department of Chemistry, School of Human Health Sciences, University of Florence, Via Schiff 6, Sesto Fiorentino I-50019, Florence, Italy
| | - Paola Mura
- Department of Chemistry, School of Human Health Sciences, University of Florence, Via Schiff 6, Sesto Fiorentino I-50019, Florence, Italy.
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9
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Water-soluble inclusion complexes of trans-polydatin by cyclodextrin complexation: Preparation, characterization and bioactivity evaluation. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.03.054] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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10
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Novel water-soluble fisetin/cyclodextrins inclusion complexes: Preparation, characterization, molecular docking and bioavailability. Carbohydr Res 2015; 418:20-28. [PMID: 26531135 DOI: 10.1016/j.carres.2015.09.013] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Revised: 09/07/2015] [Accepted: 09/25/2015] [Indexed: 12/22/2022]
Abstract
Novel water-soluble inclusion complexes for fisetin (FIT) were developed by introducing β-cyclodextrin (β-CD) and γ-CD. Properties of the obtained complexes, as well as the interactions between each component, were systematically investigated in both solution and solid states by means of ESI-MS, NMR, FT-IR, XRD, DSC, SEM etc. All characterization information demonstrated that FIT/CDs inclusion complexes were formed, and exhibited different spectroscopic features and properties from FIT. A complex with 1:1 stoichiometry of FIT and CDs was confirmed with Job's method. Meanwhile, as supported by molecular modeling calculations, we suggested that phenyl group (C ring) of FIT molecule was included in the CDs cavity from the wide side. Moreover, the water solubility of FIT/CDs was successfully improved from 2.8 mg/mL (in ethanol aqueous solution) to 4.5 mg/mL (FIT/β-CD complex) and 7.8 mg/mL (FIT/γ-CD complex), and higher thermal stability results were shown by thermal analysis for those complexes. Notably, the inclusion complexes displayed almost two times higher cytotoxicity compared to free FIT against Hela and MCF-7 cells. These results suggested that FIT/CDs complexes could be potentially useful in food industry and healthcare area.
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11
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Sherje AP, Londhe V. Ternary Inclusion Complex of Paliperidone with β-Cyclodextrin and Hydrophilic Polymer for Solubility and Dissolution Enhancement. J Pharm Innov 2015. [DOI: 10.1007/s12247-015-9229-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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12
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Mura P. Analytical techniques for characterization of cyclodextrin complexes in aqueous solution: A review. J Pharm Biomed Anal 2014; 101:238-50. [DOI: 10.1016/j.jpba.2014.02.022] [Citation(s) in RCA: 172] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Accepted: 02/17/2014] [Indexed: 11/26/2022]
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13
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Comparative analysis of binary and ternary cyclodextrin complexes with econazole nitrate in solution and in solid state. J Pharm Biomed Anal 2014; 91:81-91. [DOI: 10.1016/j.jpba.2013.12.029] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Revised: 12/20/2013] [Accepted: 12/21/2013] [Indexed: 01/11/2023]
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14
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Oliveira T, Botelho G, Alves NM, Mano JF. Inclusion complexes of α-cyclodextrins with poly(d,l-lactic acid): structural, characterization, and glass transition dynamics. Colloid Polym Sci 2013. [DOI: 10.1007/s00396-013-3127-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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15
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El-Ghaffar MA, Elhalawany N, Ahmed E, Sabaa M. Synthesis and characterization of some chelating polymers bearing maleic acid and/or sodium maleate moieties for removal of some toxic heavy metal ions. CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY 2013; 15:1013-1021. [DOI: 10.1007/s10098-013-0579-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Williams HD, Trevaskis NL, Charman SA, Shanker RM, Charman WN, Pouton CW, Porter CJH. Strategies to address low drug solubility in discovery and development. Pharmacol Rev 2013; 65:315-499. [PMID: 23383426 DOI: 10.1124/pr.112.005660] [Citation(s) in RCA: 994] [Impact Index Per Article: 90.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Drugs with low water solubility are predisposed to low and variable oral bioavailability and, therefore, to variability in clinical response. Despite significant efforts to "design in" acceptable developability properties (including aqueous solubility) during lead optimization, approximately 40% of currently marketed compounds and most current drug development candidates remain poorly water-soluble. The fact that so many drug candidates of this type are advanced into development and clinical assessment is testament to an increasingly sophisticated understanding of the approaches that can be taken to promote apparent solubility in the gastrointestinal tract and to support drug exposure after oral administration. Here we provide a detailed commentary on the major challenges to the progression of a poorly water-soluble lead or development candidate and review the approaches and strategies that can be taken to facilitate compound progression. In particular, we address the fundamental principles that underpin the use of strategies, including pH adjustment and salt-form selection, polymorphs, cocrystals, cosolvents, surfactants, cyclodextrins, particle size reduction, amorphous solid dispersions, and lipid-based formulations. In each case, the theoretical basis for utility is described along with a detailed review of recent advances in the field. The article provides an integrated and contemporary discussion of current approaches to solubility and dissolution enhancement but has been deliberately structured as a series of stand-alone sections to allow also directed access to a specific technology (e.g., solid dispersions, lipid-based formulations, or salt forms) where required.
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Affiliation(s)
- Hywel D Williams
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
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Song LX, Pan SZ, Bai L, Dang Z, Du FY, Chen J. Functional significance of molecule–ion interactions between a series of inorganic salts and β-cyclodextrin. Supramol Chem 2011. [DOI: 10.1080/10610278.2010.544737] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Le Xin Song
- a CAS Key Laboratory of Soft Matter Chemistry , University of Science and Technology of China , Hefei, 230026, P.R. China
- b Department of Chemistry , University of Science and Technology of China , Hefei, 230026, P.R. China
| | - Shu Zhen Pan
- b Department of Chemistry , University of Science and Technology of China , Hefei, 230026, P.R. China
| | - Lei Bai
- b Department of Chemistry , University of Science and Technology of China , Hefei, 230026, P.R. China
| | - Zheng Dang
- a CAS Key Laboratory of Soft Matter Chemistry , University of Science and Technology of China , Hefei, 230026, P.R. China
| | - Fang Yun Du
- a CAS Key Laboratory of Soft Matter Chemistry , University of Science and Technology of China , Hefei, 230026, P.R. China
| | - Jie Chen
- b Department of Chemistry , University of Science and Technology of China , Hefei, 230026, P.R. China
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Nekkanti V, Karatgi P, Paruchuri S, Pillai R. Drug product development and pharmacological evaluation of a sparingly soluble novel camptothecin analog for peroral administration. Drug Deliv 2011; 18:294-303. [PMID: 21214430 DOI: 10.3109/10717544.2010.544689] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
This work focused on the developmental aspects, pharmacokinetic evaluation, and pharmacological assessment of a drug inclusion complex for a novel camptothecin analog (CA) and 2-hydroxypropyl-β-cyclodextrin (HP-β-CD). Camptothecins analog belong to topoisomerase-I inhibitor class of compounds with proven anti-tumor activity but exhibit poor solubility. To enhance solubility a drug inclusion complex with cyclodextrin was developed using a spray-drying process. The powder complex characterized using DSC, XRPD, FT-IR, and ¹H NMR techniques confirmed interaction of cyclodextrin with the CA indicating formation of a true complex wherein the drug is encapsulated in the cyclodextrin cavity. The saturation solubility and dissolution kinetics of drug complex evaluated in a discriminating medium showed significantly higher solubility and faster dissolution as compared to a physical mixture or powder blend comprising of drug and cyclodextrin. Pharmacokinetic (PK) studies in Wistar rats indicated a significant increase in the rate and extent of absorption for the drug complex as compared to a nanoparticulate dispersion that was used as the positive control. Pharmacological activity following peroral administration of drug complex in athymic nude mice with implanted tumors revealed that the tumor inhibition activity was equivalent to commercially available intravenous (IV) formulation with comparable safety profile. These studies demonstrated for the first instance feasibility of developing a safe and efficacious peroral formulation for a sparingly soluble camptothecin analog that may provide another viable, patient compliant, and cost effective option for the treatment of solid tumors.
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Affiliation(s)
- Vijaykumar Nekkanti
- CPS Product Development, Dr Reddy's Laboratories Limited, Hyderabad-500090, India
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19
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Shikhar A, Bommana MM, Gupta SS, Squillante E. Formulation development of Carbamazepine–Nicotinamide co-crystals complexed with γ-cyclodextrin using supercritical fluid process. J Supercrit Fluids 2011. [DOI: 10.1016/j.supflu.2010.09.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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20
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Messner M, Kurkov SV, Jansook P, Loftsson T. Self-assembled cyclodextrin aggregates and nanoparticles. Int J Pharm 2009; 387:199-208. [PMID: 19963052 DOI: 10.1016/j.ijpharm.2009.11.035] [Citation(s) in RCA: 243] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2009] [Revised: 11/25/2009] [Accepted: 11/29/2009] [Indexed: 11/28/2022]
Abstract
Cyclodextrins (CDs) are widely used as enabling pharmaceutical excipients, mainly as solubilizing complexing agents. CDs are cyclic oligosaccharides with hydrophilic outer surface and a somewhat lipophilic central cavity. In aqueous solutions CDs are able to solubilize lipophilic drugs by taking up some lipophilic moiety of the drug molecule into the central cavity, i.e. through formation of hydrophilic inclusion complexes. Recently it has been observed that that other types of CD complexes, such as non-inclusion complexes, are also participating in the CD solubilization of poorly soluble drugs. However, in aqueous solutions CDs are also able self-assemble to form nanosized aggregates that can contribute to their solubilizing properties. At low CD concentrations (at about 1%, w/v) the fraction of CD molecules forming aggregates is insignificant but the aggregation increases rapidly with increasing CD concentration. Also, formation of CD complexes can increase the tendency of CDs to form aggregates and can lead to formation of micellar-type CD aggregates capable to solubilize poorly soluble compounds that do not readily form inclusion complexes. In this article formation of CD aggregates and CD nanoparticles is reviewed with emphasis on the physicochemical properties of self-assembled CDs and CD complexes.
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Affiliation(s)
- Martin Messner
- Faculty of Pharmaceutical Sciences, University of Iceland, Hagi, Hofsvallagata 53, IS-107 Reykjavik, Iceland
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Al Omari MM, Daraghmeh NH, El-Barghouthi MI, Zughul MB, Chowdhry BZ, Leharne SA, Badwan AA. Novel inclusion complex of ibuprofen tromethamine with cyclodextrins: Physico-chemical characterization. J Pharm Biomed Anal 2009; 50:449-58. [DOI: 10.1016/j.jpba.2009.05.031] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2009] [Revised: 05/13/2009] [Accepted: 05/27/2009] [Indexed: 11/17/2022]
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22
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Uzqueda M, Martín C, Zornoza A, Sánchez M, Vélaz I. Physicochemical characterization of terbinafine-cyclodextrin complexes in solution and in the solid state. J INCL PHENOM MACRO 2009. [DOI: 10.1007/s10847-009-9656-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Palma SD, Tartara LI, Quinteros D, Allemandi DA, Longhi MR, Granero GE. An efficient ternary complex of acetazolamide with HP-ß-CD and TEA for topical ocular administration. J Control Release 2009; 138:24-31. [DOI: 10.1016/j.jconrel.2009.04.035] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2009] [Revised: 04/23/2009] [Accepted: 04/30/2009] [Indexed: 11/24/2022]
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Salústio P, Feio G, Figueirinhas J, Pinto J, Cabral Marques H. The influence of the preparation methods on the inclusion of model drugs in a β-cyclodextrin cavity. Eur J Pharm Biopharm 2009; 71:377-86. [DOI: 10.1016/j.ejpb.2008.09.027] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2007] [Revised: 08/06/2008] [Accepted: 09/30/2008] [Indexed: 11/26/2022]
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Brun H, Paul M, Razzouq N, Binhas M, Gibaud S, Astier A. Cyclodextrin Inclusion Complexes of the Central Analgesic Drug Nefopam. Drug Dev Ind Pharm 2008; 32:1123-34. [PMID: 17090434 DOI: 10.1080/03639040600920663] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Inclusion complexes of nefopam base (NEF) with various beta-cyclodextrins (betaCDs) were investigated. All tested betaCDs increased the apparent solubility of NEF according to a Higuchi AL type plot (except betaCD: AN type plot), which indicates the formation of 1:1 stoichiometry inclusion complexes. 1H-NMR and 13C-NMR experiments showed that complexation by CDs allowed an easy separation of the R and S enantiomers. Based on spectral data obtained from the two-dimensional rotating frame nuclear Overhauser effect spectroscopy (2D-ROESY), a reasonable geometry for the complexes could be proposed implicating the insertion of the benzoxazocine ring into the wide end of the torus cavity.
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Affiliation(s)
- H Brun
- Laboratoire de Pharmacotechnie, Service de Pharmacie, Hôpital Henri Mondor, Créteil, France
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26
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A new spectrofluorometric method for the determination of nicotine base on the inclusion interaction of methylene blue and cucurbit[7]uril. Mikrochim Acta 2008. [DOI: 10.1007/s00604-008-0032-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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27
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Mura P, Corti G, Maestrelli F, Cirri M. The influence of chitosan on cyclodextrin complexing and solubilizing abilities towards drugs. J INCL PHENOM MACRO 2007. [DOI: 10.1007/s10847-007-9329-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Maitre MM, Longhi MR, Granero GG. Ternary complexes of flurbiprofen with HP-beta-CD and ethanolamines characterization and transdermal delivery. Drug Dev Ind Pharm 2007; 33:311-26. [PMID: 17454064 DOI: 10.1080/03639040600901978] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Binary and multicomponent systems complexes prepared with HP-beta-CD and/or with monoethanolamine (MEA), diethanolamine (DEA) or triethanolamine (TEA) were obtained. The results of solid-state studies indicated the presence of strong interactions between the components in the binary and the ternary systems. Drug solubility and dissolution rate in water were notably improved by employing the HP-beta-CD and the alkanolamines. The combined use of cosolvency and complexation with MEA in the presence of HP-beta-CD on the permeation of flurbiprofen through the human skin was evaluated. The combination of IPM, PG, and HP-beta-CD yield the highest permeation for the flurbiprofen-MEA complex.
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Affiliation(s)
- Marcos M Maitre
- Departamento de Farmacia, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba, Argentina
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29
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Effect of Buffer Species on the Complexation of Basic Drug Terfenadine with β-Cyclodextrin. J INCL PHENOM MACRO 2006. [DOI: 10.1007/s10847-006-9147-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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30
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Dahlheim CE, Dali MM, Naringrekar VH, Miller SA, Shukla RB. Multidisciplinary Investigation of Atypical Inclusion Complexes of β-Cyclodextrin and a Phospholipase-A2 Inhibitor. J Pharm Sci 2005; 94:409-22. [PMID: 15614811 DOI: 10.1002/jps.20245] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BMS-188184, an anthracene derivative, has been found to form at least two complexes with beta-cyclodextrin. The association/dissociation kinetics of the two complexes were extremely slow, with one complex requiring approximately 24 h, and the other complex requiring more than 8 weeks, to reach equilibrium. The stability constants of the two complexes were estimated at approximately 11,000 and 39,000 M(-1) under nonequilibrium conditions. The slow rates of dissociation allowed the complexes and the unbound BMS-188184 to be separated using high-performance liquid chromatography. Exact mass liquid chromatography/mass spectrometry, tandem mass spectrometry, and nuclear magnetic resonance techniques were used to characterize the stoichiometry of both complexes as 1:1. Because of the ability of the complexes to survive high-performance liquid chromatography analysis, their slow reaction rates, and 1:1 stoichiometry, the complexes were tentatively characterized as [2]-rotaxanes. The available data suggest that the two complexes are conformational isomers.
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Affiliation(s)
- C E Dahlheim
- Pharmaceutical Research Institute, Bristol-Myers Squibb, One Squibb Drive, P.O. Box 191, New Brunswick, New Jersey 08903-0191, USA.
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31
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Ribeiro L, Carvalho RA, Ferreira DC, Veiga FJB. Multicomponent complex formation between vinpocetine, cyclodextrins, tartaric acid and water-soluble polymers monitored by NMR and solubility studies. Eur J Pharm Sci 2005; 24:1-13. [PMID: 15626573 DOI: 10.1016/j.ejps.2004.09.003] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2004] [Revised: 05/25/2004] [Accepted: 09/14/2004] [Indexed: 11/24/2022]
Abstract
This work deals with multicomponent complex formation of vinpocetine (VP) with beta-cyclodextrin (betaCD), sulfobutyl ether beta-cyclodextrin (SBEbetaCD) and tartaric acid (TA), in the presence or absence of water-soluble polymers, in aqueous solution. Complexation was monitored by phase-solubility and proton nuclear magnetic resonance ((1)H NMR) studies. TA demonstrated a synergistic effect on VP solubility, and in the complexation efficiency of betaCD and SBEbetaCD. Additionally, water-soluble polymers increased even more the complexation efficiency of the CDs that was reflected by a 2.1-2.5 increase on K(C) values for VP-CD-TA-polymer multicomponent complexes. SBEbetaCD was more effective in VP solubilization, as K(C) values of VP-SBEbetaCD-TA multicomponent complexes were notably higher than in corresponding betaCD complexes. The large chemical shift displacements from protons located in the interior of the hydrophobic CD cavities (i.e., H-3 and H-5) coupled with significant chemical shift displacements of VP aromatic protons suggested that this moiety was included in the cavity of both betaCD and SBEbetaCD. Two-dimensional rotating frame nuclear Overhauser effect spectroscopy (ROESY) experiments were carried out in order to obtain information about the multicomponent complex geometry in solution. Inspection of ROESY spectra allowed the establishment of spatial proximities between all aromatic protons of VP and the internal protons of the CDs, confirming that the aromatic moiety of VP is included in CD cavities being deeply inserted in SBEbetaCD multicomponent complexes, since additional interactions with the sulfobutyl side chains were evidenced.
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Affiliation(s)
- Laura Ribeiro
- Laboratory of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, 3000-295 Coimbra, Portugal
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32
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Gladys G, Claudia G, Marcela L. The effect of pH and triethanolamine on sulfisoxazole complexation with hydroxypropyl-beta-cyclodextrin. Eur J Pharm Sci 2004; 20:285-93. [PMID: 14592694 DOI: 10.1016/s0928-0987(03)00202-1] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel complexation of sulfisoxazole with hydroxypropyl-beta-cyclodextrin (HP-beta-CD) was studied. Two systems were used: binary complexes prepared with HP-beta-CD and multicomponent system (HP-beta-CD and the basic compound triethanolamine (TEA)). Inclusion complex formation in aqueous solutions and in solid state were investigated by the solubility method, thermal analysis (differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA)), Fourier-transform infrared spectroscopy (FT-IR) and dissolution studies. The solid complexes of sulfisoxazole were prepared by freeze-drying the homogeneous concentrated aqueous solutions in molar ratios of sulfisoxazole:HP-beta-CD 1:1 and 1:2, and sulfisoxazole:TEA:HP-beta-CD 1:1:2. FT-IR and thermal analysis showed differences among sulfisoxazole:HP-beta-CD and sulfisoxazole:TEA:HP-beta-CD and their corresponding physical mixtures and individual components. The HP-beta-CD solubilization of sulfisoxazole could be improved by ionization of the drug molecule through pH adjustments. However, larger improvements of the HP-beta-CD solubilization are obtained when multicomponent systems are used, allowing to reduce the amount of CD necessary to prepare the target formulation.
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Affiliation(s)
- Granero Gladys
- Departamento de Farmacia, Facultad de Ciencias Qui;micas, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000-Córdoba, Argentina
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33
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Consonni R, Recca T, Dettori MA, Fabbri D, Delogu G. Structural characterization of imazalil/beta-cyclodextrin inclusion complex. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2004; 52:1590-1593. [PMID: 15030216 DOI: 10.1021/jf034827z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
An equimolar inclusion complex between imazalil, a selected fungicide, and beta-cyclodextrin using an aqueous standard solution procedure has been obtained. The complex has been investigated in solution by (1)H and (13)C NMR techniques in combination with computational methods in order to establish a valuable analytical protocol through which to gain insight into the interactions of the inclusion complex in aqueous solution. Intramolecular NMR distance constraints have been detected and used for three-dimensional complex structure determination.
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Affiliation(s)
- Roberto Consonni
- Istituto per lo Studio delle Macromolecole, Lab NMR, CNR, Via Bassini 15, 20133 Milano, Italy.
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34
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Zborowski K, Zuchowski G. Enantioselective chromatography of alkyl derivatives of 5-ethyl-5-phenyl-2-thiobarbituric acid studied by semiempirical AM1 method. Chirality 2002; 14:632-7. [PMID: 12125032 DOI: 10.1002/chir.10123] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Complexation of alkyl derivatives of 5-ethyl-5-phenyl-2-thiobarbituric acid (2-thiophenobarbital) enantiomers by beta-cyclodextrin was investigated by the AM1 method. The inclusion complexes of beta-cyclodextrin with neutral and anionic forms of these enantiomers have been modeled and energetically optimized. The chiral discrimination of enantiomers was analyzed in terms of differences in the interaction energies. The calculated interaction energies between each enantiomer of the investigated 2-thiobarbiturates and beta-cyclodextrin confirm the ability of beta-cyclodextrin to act as a mobile phase additive in reversed-phase HPLC to separate enantiomers by liquid chromatography and rationalize their order of elution.
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35
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Radulovic DM, Karljikovic-Rajic KD, Lucic BM, Vujic ZB. A preliminary study of beta-cyclodextrin/metoprolol tartrate inclusion complex for potential enantiomeric separation. J Pharm Biomed Anal 2001; 24:871-6. [PMID: 11248480 DOI: 10.1016/s0731-7085(00)00555-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The inclusion complex formation between Metoprolol tartarata (MeT) and beta-cyclodextrin (beta-CD) has been investigated using hyperchromic shift at lambda(max) 274.4 nm of MeT. Different parameters such as stirring time, solvent composition (aqueous and aqueous/methanol solutions with methanol content up to 50%), pH values 4.0 and 8.0 were established for optimal inclusion complex formation and confirmed two stoichiometric compositions 1:1 and 1:2. Preliminary data on usage of MeT/beta-CD complex in reversed-phase HPLC indicate the potential application of this complex as a kind of pre-column derivatization for enantiomeric separation of beta(1)-blockers.
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Affiliation(s)
- D M Radulovic
- Faculty of Pharmacy, Institute of Pharmaceutical Chemistry and Drug Analysis, University of Belgrade, Vojvode Stepe 450, 11221 Belgrade, Yugoslavia
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