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Sá Filho A, Martins JLR, Costa RF, Pedrino GR, Duarte VS, Silva ON, Napolitano HB, Fajemiroye JO. Polymorphism and Pharmacological Assessment of Carbamazepine. Int J Mol Sci 2024; 25:9835. [PMID: 39337323 PMCID: PMC11431949 DOI: 10.3390/ijms25189835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 05/14/2024] [Accepted: 05/14/2024] [Indexed: 09/30/2024] Open
Abstract
This work provides insight into carbamazepine polymorphs (Forms I, II, III, IV, and V), with reports on the cytoprotective, exploratory, motor, CNS-depressant, and anticonvulsant properties of carbamazepine (CBZ), carbamazepine formulation (CBZ-F), topiramate (TOP), oxcarbazepine (OXC), and diazepam (DZP) in mice. Structural analysis highlighted the significant difference in molecular conformations, which directly influence the physicochemical properties; and density functional theory description provided indications about CBZ reactivity and stability. In addition to neuron viability assessment in vitro, animals were treated orally with vehicle 10 mL/kg, as well as CBZ, CBZ-F, TOP, OXC, and DZP at the dose of 5 mg/kg and exposed to open-field, rotarod, barbiturate sleep induction and pentylenetetrazol (PTZ 70 mg/kg)-induced seizure. The involvement of GABAergic mechanisms in the activity of these drugs was evaluated with the intraperitoneal pretreatment of flumazenil (2 mg/kg). The CBZ, CBZ-F, and TOP mildly preserved neuronal viability. The CBZ-F and the reference AEDs potentiated barbiturate sleep, altered motor activities, and attenuated PTZ-induced convulsion. However, flumazenil pretreatment blocked these effects. Additional preclinical assessments could further establish the promising utility of CBZ-F in clinical settings while expanding the scope of AED formulations and designs.
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Affiliation(s)
- Alberto Sá Filho
- Graduate Program in Pharmaceutical Sciences, Evangelical University of Goiás, Anapolis 75083-515, GO, Brazil; (A.S.F.); (J.L.R.M.); (R.F.C.); (O.N.S.); (H.B.N.)
| | - Jose Luis Rodrigues Martins
- Graduate Program in Pharmaceutical Sciences, Evangelical University of Goiás, Anapolis 75083-515, GO, Brazil; (A.S.F.); (J.L.R.M.); (R.F.C.); (O.N.S.); (H.B.N.)
| | - Rafael Fernandes Costa
- Graduate Program in Pharmaceutical Sciences, Evangelical University of Goiás, Anapolis 75083-515, GO, Brazil; (A.S.F.); (J.L.R.M.); (R.F.C.); (O.N.S.); (H.B.N.)
| | | | - Vitor Santos Duarte
- Structural and Theoretical Chemistry Group, State University of Goiás, Anápolis 75083-515, GO, Brazil
| | - Osmar Nascimento Silva
- Graduate Program in Pharmaceutical Sciences, Evangelical University of Goiás, Anapolis 75083-515, GO, Brazil; (A.S.F.); (J.L.R.M.); (R.F.C.); (O.N.S.); (H.B.N.)
| | - Hamilton Barbosa Napolitano
- Graduate Program in Pharmaceutical Sciences, Evangelical University of Goiás, Anapolis 75083-515, GO, Brazil; (A.S.F.); (J.L.R.M.); (R.F.C.); (O.N.S.); (H.B.N.)
- Structural and Theoretical Chemistry Group, State University of Goiás, Anápolis 75083-515, GO, Brazil
| | - James Oluwagbamigbe Fajemiroye
- Graduate Program in Pharmaceutical Sciences, Evangelical University of Goiás, Anapolis 75083-515, GO, Brazil; (A.S.F.); (J.L.R.M.); (R.F.C.); (O.N.S.); (H.B.N.)
- Institute of Biological Sciences, Federal University of Goiás, Goiás 74605-010, GO, Brazil;
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Loukopoulos E, Papatriantafyllopoulou C, Moushi E, Kitos AA, Tasiopoulos AJ, Perlepes SP, Nastopoulos V. Solvatomorphism in a series of copper(II) complexes with the 5-phenylimidazole/perchlorate system as ligands. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2024; 80:347-359. [PMID: 39136540 PMCID: PMC11301897 DOI: 10.1107/s2052520624005948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Accepted: 06/19/2024] [Indexed: 08/16/2024]
Abstract
In the course of an investigation of the supramolecular behaviour of copper(II) complexes with the 5-phenylimidazole/perchlorate ligand system (`blend') remarkable solvatomorphism has been observed. By employing a variety of crystallization solvents (polar protic, polar/non-polar aprotic), a series of 12 crystalline solvatomorphs with the general formula [Cu(ClO4)2(LH)4]·x(solvent) have been obtained [LH = 5-phenylimidazole, x(solvent) = 3.3(H2O) (1), 2(methanol) (2), 2(ethanol) (3), 2(1-propanol) (4), 2(2-propanol) (5), 2(2-butanol) (6), 2(dimethylformamide) (7), 2(acetone) (8), 2(tetrahydrofurane) (9), 2(1,4-dioxane) (10), 2(ethyl acetate) (11) and 1(diethyl ether) (12)]. The structures have been solved using single-crystal X-ray diffraction and the complexes were characterized by thermal analysis and infrared spectroscopy. The solvatomorphs are isostructural (triclinic, P1), with the exception of compound 9 (monoclinic, P21/n). The supramolecular structures and the role of the various solvents is discussed. All potential hydrogen-bond functionalities, both of the [Cu(ClO4)2(LH)4] units and of the solvents, are utilized in the course of the crystallization process. The supramolecular assembly in all structures is directed by strong recurring Nimidazole-H...Operchlorate motifs leading to robust scaffolds composed of the [Cu(ClO4)2(LH)4] host complexes. The solvents are located in channels and, with the exception of the disordered waters in 1 and the diethyl ether in 12, participate in hydrogen-bonding formation with the [Cu(ClO4)2(LH)4] complexes, serving as both hydrogen-bond acceptors and donors (for the polar protic solvents in 2-6), or solely as hydrogen-bond acceptors (for the polar/non-polar aprotic solvents in 7-11), linking the complexes and contributing to the stability of the crystalline compounds.
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Affiliation(s)
| | | | - Eleni Moushi
- Department of ChemistryUniversity of CyprusNicosia1678Cyprus
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Antonio M, Raffaghelli M, Maggio RM. Assessing Polymorphic Purity of Rifampicin in Double and Triple-Drug Fixed-Dose Combination Products. J Pharm Sci 2024; 113:930-936. [PMID: 37783271 DOI: 10.1016/j.xphs.2023.09.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 09/06/2023] [Accepted: 09/26/2023] [Indexed: 10/04/2023]
Abstract
First-line tuberculostatic agents, Rifampicin (RIF), Isoniazid (ISH), Ethambutol (ETB), and Pyrazinamide (PZA) are generally administered as a fixed-dose combination (FDC) for improving patient adherence. The major quality challenge of these FDC products is their variable bioavailability, where RIF and its solid state are key factors. In this work, the analysis of the impact of the polymorphism in the performance of RIF in RIF-ISH and PZA-RIF-ISH combined products was carried out by an overall approach that included the development and validation of two methodologies combining near-infrared (NIR) spectroscopy and partial least squares (PLS) to the further evaluation of commercial products. For NIR-PLS methods, training and validation sets were prepared with mixtures of Form I/Form II of RIF, and the appropriate amount of ISH (for double associations) or ISH-PZA (for triple associations). The corresponding matrix of the excipients was added to the mixture of APIs to simulate the environment of each FDC product. Four PLS factors, reduced spectral range, and the combination of standard normal variate and Savitzky-Golay 1st derivative (SNV-D') were selected as optimum data pre-treatment for both methods, yielding satisfactory recoveries during the analysis of validation sets (98.5±2.0%, and 98.7±1.8% for double- and triple-FDC products, respectively). The NIR-PLS model for RIF-ISH successfully estimated the polymorphic purity of Form II in double-FDC capsules (1.02 ± 0.02w/w). On the other hand, the NIR-PLS model for RIF-ISH-PZA detected a low purity of Form II in triple FDC tablets (0.800 ± 0.021w/w), these results were confirmed by X-ray powder diffraction. Nevertheless, the triple-FDC tablets showed good performance in the dissolution test (Q=99-102%), implying a Form II purity about of 80% is not low enough to affect the safety and efficacy of the product.
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Affiliation(s)
- Marina Antonio
- Área de Análisis de Medicamentos, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario and Instituto de Química Rosario (IQUIR, CONICET-UNR), Suipacha 531, Rosario S2002LRK, Argentina
| | - Mariano Raffaghelli
- Laboratorio Industrial Farmacéutico S.E. French 4950, S3006ETP, Santa Fe, Argentina
| | - Rubén M Maggio
- Área de Análisis de Medicamentos, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario and Instituto de Química Rosario (IQUIR, CONICET-UNR), Suipacha 531, Rosario S2002LRK, Argentina..
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Chachorovska M, Lefton JB, Petrushevski G, Geskovski N, Jakimovska V, Makreski P. Solid-State Phase Transformation of Monohydrate and Anhydrous Form II of Sitagliptin Phosphate into a Novel Anhydrous Form IV - Solvent-Driven, Temperature-Induced and Stress Testings. J Pharm Sci 2024; 113:396-406. [PMID: 37972890 DOI: 10.1016/j.xphs.2023.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 10/31/2023] [Accepted: 11/08/2023] [Indexed: 11/19/2023]
Abstract
The solid form landscape of sitagliptin phosphate was systematically evaluated by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and X-ray powder diffraction (XRPD), supported by a plethora of auxiliary analytical techniques. The preformulation experiments resulted in the transition of sitagliptin phosphate monohydrate into a new anhydrous form (designated as form IV), obtained after recrystallization from absolute ethanol. The anhydrous form IV remained stable under stressed conditions (1 month at 25 °C/60 %RH and 40 °C/75 %RH). On the other hand, thermal heating (dehydration) of sitagliptin phosphate monohydrate resulted in conversion into another anhydrous form II. Form II was found to be metastable, because after melting, under exposure at 40 °C/75 %RH for 1 month, or when dissolved in absolute ethanol converted to the stable anhydrous form IV of sitagliptin phosphate. A monotropic relationship was found between both studied anhydrous forms. Intrinsic dissolution tests revealed differences in the dissolution rates between the monohydrate and the anhydrous forms of sitagliptin phosphate. This research corrects the record with an accurate chemical composition of the anhydrous form IV of sitagliptin phosphate that was previously regarded as a hemiethanolate. In addition, the crystal structure of anhydrous form II of sitagliptin phosphate has been solved and reported for the first time.
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Affiliation(s)
- Marina Chachorovska
- Research and Development, Alkaloid AD, Bul. Aleksandar Makedonski 12, 1000 Skopje, North Macedonia.
| | - Jonathan B Lefton
- Department of Chemistry, Southern Methodist University, 231 Fondren Science Building, Dallas, TX 75275, USA
| | - Gjorgji Petrushevski
- Quality Control, Alkaloid AD, Blvd. Aleksandar Makedonski 12, 1000, Skopje, Republic of North Macedonia; Institute of Chemistry, Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University in Skopje, Arhimedova 5, 1000 Skopje, North Macedonia
| | - Nikola Geskovski
- Institute of Pharmaceutical Technology, Faculty of Pharmacy, Ss. Cyril and Methodius University in Skopje, Majka Tereza 47, 1000 Skopje, North Macedonia
| | - Viktorija Jakimovska
- Research and Development, Alkaloid AD, Bul. Aleksandar Makedonski 12, 1000 Skopje, North Macedonia
| | - Petre Makreski
- Institute of Chemistry, Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University in Skopje, Arhimedova 5, 1000 Skopje, North Macedonia.
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D’Abbrunzo I, Procida G, Perissutti B. Praziquantel Fifty Years on: A Comprehensive Overview of Its Solid State. Pharmaceutics 2023; 16:27. [PMID: 38258039 PMCID: PMC10821272 DOI: 10.3390/pharmaceutics16010027] [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: 11/22/2023] [Revised: 12/18/2023] [Accepted: 12/20/2023] [Indexed: 01/24/2024] Open
Abstract
This review discusses the entire progress made on the anthelmintic drug praziquantel, focusing on the solid state and, therefore, on anhydrous crystalline polymorphs, amorphous forms, and multicomponent systems (i.e., hydrates, solvates, and cocrystals). Despite having been extensively studied over the last 50 years, new polymorphs and the greater part of their cocrystals have only been identified in the past decade. Progress in crystal engineering science (e.g., the use of mechanochemistry as a solid form screening tool and more strategic structure-based methods), along with the development of analytical techniques, including Synchrotron X-ray analyses, spectroscopy, and microscopy, have furthered the identification of unknown crystal structures of the drug. Also, computational modeling has significantly contributed to the prediction and design of new cocrystals by considering structural conformations and interactions energy. Whilst the insights on praziquantel polymorphs discussed in the present review will give a significant contribution to controlling their formation during manufacturing and drug formulation, the detailed multicomponent forms will help in designing and implementing future praziquantel-based functional materials. The latter will hopefully overcome praziquantel's numerous drawbacks and exploit its potential in the field of neglected tropical diseases.
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Affiliation(s)
| | | | - Beatrice Perissutti
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Piazzale Europa 1, 34127 Trieste, Italy (G.P.)
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Fleming M, Swift JA. Enhancement of Hydrate Stability through Substitutional Defects. CRYSTAL GROWTH & DESIGN 2023; 23:5860-5867. [PMID: 37547883 PMCID: PMC10401670 DOI: 10.1021/acs.cgd.3c00457] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/10/2023] [Indexed: 08/08/2023]
Abstract
Cytosine monohydrate (CM) and anhydrate crystal forms reversibly interconvert under high temperatures or high humidity conditions. Here, we demonstrate through defect engineering the ability to expand the thermal stability range of CM through the targeted creation of quantifiable defects in low-level concentrations. Twelve different molecular dyes with a variety of core structures and charges were screened as potential dopants in CM. CM-dye phases prepared with Congo red (CR), Evans blue (EB), and Azocarmine G (AG) exhibited the highest inclusion levels (up to 1.1 wt %). In these doped isomorphous materials, each dye is presumed to substitute for 4-7 cytosine molecules within the low-rugosity (102) planes of the CM matrixes, thereby creating a quantifiable substitutional defect and an impediment to the cooperative molecular motions which enable the transformation to the anhydrate. Dehydration of materials with these engineered defects requires significantly higher temperatures and proceeds with slower kinetics compared to pure CM. The CM-dye phases also exhibit a reduction in the thermal expansion along key crystallographic axes and yield dehydration products with altered particle morphologies.
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Mann JE, Gao R, Swift JA. Dehydration of Niclosamide Monohydrate Polymorphs: Different Mechanistic Pathways to the Same Product. CRYSTAL GROWTH & DESIGN 2023; 23:5102-5111. [PMID: 38510268 PMCID: PMC10950297 DOI: 10.1021/acs.cgd.3c00322] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 05/15/2023] [Indexed: 03/22/2024]
Abstract
Many active pharmaceutical ingredients (APIs) can crystallize as hydrates or anhydrates, the relative stability of which depends on their internal structures as well as the external environment. Hydrates may dehydrate unexpectedly or intentionally, though the molecular-level mechanisms by which such transformations occur are difficult to predict a priori. Niclosamide is an anthelmintic drug on the World Health Organization's "List of Essential Medicines" that crystallizes in two monohydrate forms: HA and HB. Through complementary time-resolved synchrotron powder X-ray diffraction and thermogravimetric kinetic studies, we demonstrate that the two monohydrates dehydrate via distinctly different solid state pathways yet yield the same final anhydrate phase. Water loss from HA via diffusion yields an isomorphous desolvate intermediate which can rearrange to at least two different polymorphs, only one of which exhibits long-term stability. In contrast, dehydration of HB proceeds via a surface nucleation process where simultaneous water loss and product formation occur with no detectable crystalline intermediates. Comparative analysis of the two systems serves to highlight the complex relationship between lattice structure and solid state dehydration processes.
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Affiliation(s)
- Jen E. Mann
- Georgetown
University, Department of Chemistry, 37th and O Streets NW, Washington, District of Columbia 20057-1227, United States
| | - Renee Gao
- Georgetown
University, Department of Chemistry, 37th and O Streets NW, Washington, District of Columbia 20057-1227, United States
| | - Jennifer A. Swift
- Georgetown
University, Department of Chemistry, 37th and O Streets NW, Washington, District of Columbia 20057-1227, United States
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Yang W, Cook S, Wu D. Pre-clinical Formulation Development of an in situ Meglumine Salt of AZD5991: A Novel Macrocyclic Mcl-1 Inhibitor. Pharm Res 2023; 40:977-988. [PMID: 37012536 DOI: 10.1007/s11095-023-03503-2] [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: 11/02/2022] [Accepted: 03/20/2023] [Indexed: 04/05/2023]
Abstract
PURPOSE AZD5991 is a potent and selective macrocyclic inhibitor of Mcl-1 in clinical development. Developing an intravenous solution formulation for AZD5991 proved to be challenging primarily due to the poor intrinsic solubility of AZD5991. In this article are described studies performed to select a suitable crystalline form and to assess physicochemical properties of AZD5991 to aid in the design of a solution formulation for preclinical studies. METHODS It is preferable that the preclinical formulation has a line of sight for clinical formulation. For AZD5991, a concentration of at least 20 mg/ml was required for toxicology studies. Toward this goal, extensive pre-formulation characterization of AZD5991 including solid form analysis, pH-solubility profiling and solubility determination in cosolvents and other solubilizing media were carried out. RESULTS & DISCUSSION Crystalline Form A, which is more stable in aqueous solution and possesses acceptable thermal stability, was selected for preclinical and clinical development of AZD5991. Extensive solubility evaluation revealed an interesting pH-solubility profile that significantly enhances solubilization at pH > 8.5 to allow solution concentrations of at least 30 mg/ml by in situ meglumine salt formation. CONCLUSION Developing pre-clinical formulations to support in vivo studies requires a good understanding of the physicochemical properties of the drug candidates. Candidates with challenging pharmaceutic properties like the novel macrocycle molecule AZD5991, demand extensive characterization in its polymorph landscape, solubility profile and suitability evaluation of the excipients. Meglumine, a pH-adjusting and solubilizing agent, was found to be the best choice for formulating AZD5991 into an intravenous product to support preclinical studies.
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Affiliation(s)
- Wenzhan Yang
- Advanced Drug Delivery, Pharmaceutical Sciences, R&D, AstraZeneca, Boston, USA.
| | - Steve Cook
- Advanced Drug Delivery, Pharmaceutical Sciences, R&D, AstraZeneca, Boston, USA
| | - Dedong Wu
- Advanced Drug Delivery, Pharmaceutical Sciences, R&D, AstraZeneca, Boston, USA
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Saha BK, Nath NK, Thakuria R. Polymorphs with Remarkably Distinct Physical and/or Chemical Properties. CHEM REC 2023; 23:e202200173. [PMID: 36166697 DOI: 10.1002/tcr.202200173] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/30/2022] [Indexed: 01/21/2023]
Abstract
Polymorphism in crystals is known since 1822 and the credit goes to Mitscherlich who realized the existence of different crystal structures of the same compound while working with some arsenate and phosphate salts. Later on, this phenomenon was observed also in organic crystals. With the advent of different technologies, especially the easy availability of single crystal XRD instruments, polymorphism in crystals has become a common phenomenon. Almost 37 % of compounds (single component) are polymorphic to date. As the energies of the different polymorphic forms are very close to each other, small changes in crystallization conditions might lead to different polymorphic structures. As a result, sometimes it is difficult to control polymorphism. For this reason, it is considered to be a nuisance to crystal engineering. It has been realized that the property of a material depends not only on the molecular structure but also on its crystal structure. Therefore, it is not only of interest to academia but also has widespread applications in the materials science as well as pharmaceutical industries. In this review, we have discussed polymorphism which causes significant changes in materials properties in different fields of solid-state science, such as electrical, magnetic, SHG, thermal expansion, mechanical, luminescence, color, and pharmaceutical. Therefore, this review will interest researchers from supramolecular chemistry, materials science as well as medicinal chemistry.
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Affiliation(s)
- Binoy K Saha
- Department of Chemistry, Pondicherry University, Puducherry, 605014, India
| | - Naba K Nath
- Department of Chemistry, National Institute of Technology Meghalaya, Shillong, Meghalaya 793003, India
| | - Ranjit Thakuria
- Department of Chemistry, Gauhati University, Guwahati, 781014, India
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Yeh KL, Lee HL, Lee T. Crystallization of Form II Paracetamol with the Assistance of Carboxylic Acids toward Batch and Continuous Processes. Pharmaceutics 2022; 14:1099. [PMID: 35631685 PMCID: PMC9147162 DOI: 10.3390/pharmaceutics14051099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/12/2022] [Accepted: 05/17/2022] [Indexed: 02/04/2023] Open
Abstract
Form II paracetamol has captured the interest of researchers due to its improved compressibility. However, its low stability has made it difficult to be produced on a large scale with good reproducibility. In the present study, the selective polymorphic formation of paracetamol was carried out by cooling crystallization with four types of additives: adipic acid, fumaric acid, oxalic acid, and succinic acid. It was found that: (1) the more additives that were added, the higher the probability of forming Form II paracetamol; (2) Form II paracetamol could be induced by seeding the paracetamol aqueous solution with Form II paracetamol and fumaric acid crystals, and not the other three carboxylic acids; (3) a new solution complex of paracetamol-oxalic acid, evidenced by the solubility diagram, was responsible for the selective nucleation of Form II paracetamol in the oxalic acid aqueous solution; and (4) the range of the degree of supersaturation for nucleating Form II paracetamol was extended with the assistance of oxalic acid or fumaric acid. In large-scale crystallization, Form II paracetamol was produced by the continuous crystallization of 44 mg of paracetamol/mL in 50 wt% of fumaric acid aqueous solution with a flow rate of 150 mL/min.
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Affiliation(s)
| | | | - Tu Lee
- Department of Chemical and Materials Engineering, National Central University, 300 Zhongda Road, Zhongli District, Taoyuan City 320317, Taiwan; (K.-L.Y.); (H.-L.L.)
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Li Y, Yin Q, Zhang M, Bao Y, Hou B, Wang J, Huang J, Zhou L. Characterization and structure analysis of the heterosolvate of erythromycin thiocyanate. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2021.04.005] [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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12
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Santos AED, Dal Magro C, de Britto LS, Aguiar GPS, de Oliveira JV, Lanza M. Micronization of luteolin using supercritical carbon dioxide: Characterization of particles and biological activity in vitro. J Supercrit Fluids 2022. [DOI: 10.1016/j.supflu.2021.105471] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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13
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Hughes DS, Bingham AL, Hursthouse MB, Threlfall TL, Bond AD. The extensive solid-form landscape of sulfathiazole: geometrical similarity and interaction energies. CrystEngComm 2022. [DOI: 10.1039/d1ce01516h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sulfathiazole shows one of the most extensive solid-form landscapes known to date for an active pharmaceutical ingredient. A standardised structure set of 5 polymorphs, 59 co-crystals, 29 salts, and 3 other structures is established.
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Affiliation(s)
- David S. Hughes
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
- School of Chemistry, Faculty of Engineering and Physical Sciences, University of Southampton, Southampton, SO17 1BJ, UK
| | - Ann L. Bingham
- School of Chemistry, Faculty of Engineering and Physical Sciences, University of Southampton, Southampton, SO17 1BJ, UK
| | - Michael B. Hursthouse
- School of Chemistry, Faculty of Engineering and Physical Sciences, University of Southampton, Southampton, SO17 1BJ, UK
| | - Terry L. Threlfall
- School of Chemistry, Faculty of Engineering and Physical Sciences, University of Southampton, Southampton, SO17 1BJ, UK
| | - Andrew D. Bond
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
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Okezue M, Bogdanowich-Knipp S, Smith D, Zeller M, Byrn S, Smith P, Purcell DK, Clase K. Salts and Polymorph Screens for Bedaquiline. AAPS PharmSciTech 2021; 22:228. [PMID: 34435280 PMCID: PMC8387259 DOI: 10.1208/s12249-021-02106-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 07/31/2021] [Indexed: 02/03/2023] Open
Abstract
Bedaquiline is used to treat multi-resistant tuberculosis in adults. The fumarate salt is commercially available and used in the product Sirturo. To provide open access to bedaquiline molecule once the patent on the chemical substance expires, new salts were screened. This work offers additional information on the bedaquiline system, as new salts may present better pharmacokinetic properties. The current studies focus on the attempted isolation of the acetate, benzoate, benzenesulfonate, hydrobromide, succinate, hydrochloride, tartrate, lactate, maleate, malate, and mesylate salts of bedaquiline. Potential salts were screened using a unique combination of conventional screening, and small-scale experiments supplemented by crystallographic analysis and infrared microspectroscopy. Salts were prepared on a larger scale by dissolving 1:1 ratios of the individual salt formers and bedaquiline base (30 mg, 0.055 mmol) in different solvents and allowing the solutions to evaporate or crystallize. X-ray diffraction (XRD) techniques and spectroscopic and thermal analyses were employed to characterize the salts. The benzoate and maleate salts were selected as lead candidates after reviewing preliminary characterization data. To determine the most stable forms for the leads, a polymorph screen was conducted using solvents of various polarities. These salt screens successfully generated five new salts of bedaquiline, namely, benzoate, maleate, hydrochloride, besylate, and mesylate. The existence of these salts was confirmed by powder XRD, proton NMR, and IR spectroscopies. TGA and DSC thermal analysis along with hot-stage optical microscopy were further used to characterize the salts. The polymorph screen conducted on the salts suggested the absence of additional polymorphs at 1 g scale.
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Affiliation(s)
- Mercy Okezue
- Biotechnology Innovation and Regulatory Science Center, ABE, Purdue University, 225 S. University Street, Indiana, 47906, West Lafayette, USA.
| | | | - Daniel Smith
- Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall, Indiana, 47907, West Lafayette, USA
| | - Matthias Zeller
- Chemistry, Purdue University, 560 Oval Dr, Indiana, 47907-2084, West Lafayette, USA
| | - Stephen Byrn
- Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall, Indiana, 47907, West Lafayette, USA
- Improved Pharma LLC, 1281 Win Hentschel Blvd, Indiana, 47906, West Lafayette, USA
| | - Pamela Smith
- Improved Pharma LLC, 1281 Win Hentschel Blvd, Indiana, 47906, West Lafayette, USA
- Leading With Smart Science, LLC, 5315 Shootingstar Ln, Indiana, West Lafayette, USA
| | - Dale K Purcell
- Chemical Microscopy LLC, 1281 Win Hentschel Blvd, Indiana, 47906, West Lafayette, USA
| | - Kari Clase
- Biotechnology Innovation and Regulatory Science Center, ABE, Purdue University, 225 S. University Street, Indiana, 47906, West Lafayette, USA
- Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall, Indiana, 47907, West Lafayette, USA
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15
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Heng T, Yang D, Wang R, Zhang L, Lu Y, Du G. Progress in Research on Artificial Intelligence Applied to Polymorphism and Cocrystal Prediction. ACS OMEGA 2021; 6:15543-15550. [PMID: 34179597 PMCID: PMC8223226 DOI: 10.1021/acsomega.1c01330] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 05/28/2021] [Indexed: 06/13/2023]
Abstract
Artificial intelligence (AI) is a technology that builds an artificial system with certain intelligence and uses computer software and hardware to simulate intelligent human behavior. When combined with drug research and development, AI can considerably shorten this cycle, improve research efficiency, and minimize costs. The use of machine learning to discover novel materials and predict material properties has become a new research direction. On the basis of the current status of worldwide research on the combination of AI and crystal form and cocrystal, this mini-review analyzes and explores the application of AI in polymorphism prediction, crystal structure analysis, crystal property prediction, cocrystal former (CCF) screening, cocrystal composition prediction, and cocrystal formation prediction. This study provides insights into the future applications of AI in related fields.
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Affiliation(s)
- Tianyu Heng
- Beijing
City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical
Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, P.R. China
| | - Dezhi Yang
- Beijing
City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical
Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, P.R. China
| | - Ruonan Wang
- Beijing
City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical
Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, P.R. China
| | - Li Zhang
- Beijing
City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical
Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, P.R. China
| | - Yang Lu
- Beijing
City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical
Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, P.R. China
| | - Guanhua Du
- Beijing
City Key Laboratory of Drug Target and Screening Research, National
Center for Pharmaceutical Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union
Medical College, Beijing 100050, P.R. China
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16
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Gallagher JF, Mocilac P. Pockets and channels in tennimide solvate structures: Influence of solvent on crystal packing behaviour. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Hsueh JC, Yeh KL, Lee HL, Lee T. Strategy for polymorphic control by enzymatic reaction and antisolvent crystallization: effect of aminoacylase on metastable β-glycine formation. REACT CHEM ENG 2021. [DOI: 10.1039/d1re00335f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
β-Glycine could only be produced by enzymatic reaction, while other recrystallization methods gave mixture of α- and β-glycine, or α-, β-, γ-glycine no matter whether the pristine aminoacylase was added as auxiliary additive or not.
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Affiliation(s)
- Jen-Chieh Hsueh
- Department of Chemical and Materials Engineering, National Central University, 300 Zhongda Road, Zhongli District, Taoyuan City 32001, Taiwan, R.O.C
| | - Kuan Lin Yeh
- Department of Chemical and Materials Engineering, National Central University, 300 Zhongda Road, Zhongli District, Taoyuan City 32001, Taiwan, R.O.C
| | - Hung Lin Lee
- Department of Chemical and Materials Engineering, National Central University, 300 Zhongda Road, Zhongli District, Taoyuan City 32001, Taiwan, R.O.C
| | - Tu Lee
- Department of Chemical and Materials Engineering, National Central University, 300 Zhongda Road, Zhongli District, Taoyuan City 32001, Taiwan, R.O.C
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18
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Kinetics and mechanism of polymorphic transformation of sorbitol under mechanical milling. Int J Pharm 2020; 590:119902. [DOI: 10.1016/j.ijpharm.2020.119902] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 09/15/2020] [Accepted: 09/19/2020] [Indexed: 11/19/2022]
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19
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Yuan P, Yang D, Wang R, Gong N, Zhang L, Lu Y, Du G. Characterization of a New Solvatomorph of Drospirenone by Thermogravimetry-Mass Spectrometry Combined with Other Solid-State Analysis Methods. ACS OMEGA 2020; 5:25289-25296. [PMID: 33043207 PMCID: PMC7542801 DOI: 10.1021/acsomega.0c03531] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 09/16/2020] [Indexed: 06/11/2023]
Abstract
Drospirenone (DE) is a fourth-generation progesterone that has been widely used in oral contraceptives for women because of its safety and few side effects in terms of pharmacological activity. A new solvatomorph (crystal form C) of DE with dimethyl sulfoxide was identified and characterized for the first time through a thermogravimetry-mass spectrometry (TG-MS) coupling system. The thermodynamic property of the new solvatomorph of DE was different from those of most pharmaceutical solvatomorphs, and it was revealed via the skimmer-type interfaced TG-MS system and differential scanning calorimetry. This new solvatomorph and a polymorph of DE obtained without solvent (crystal form A) were well characterized by X-ray crystallography and vibrational spectroscopic analysis. Computational studies based on their single-crystal structures, such as Hirshfeld surface analyses, were used to determine the intermolecular interactions in the crystal network. The single-crystal structure of crystal form C of DE was determined and reported for the first time.
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Affiliation(s)
- Penghui Yuan
- Beijing
City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical
Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Dezhi Yang
- Beijing
City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical
Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Ruonan Wang
- Beijing
City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical
Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Ningbo Gong
- Beijing
City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical
Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Li Zhang
- Beijing
City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical
Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Yang Lu
- Beijing
City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical
Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Guanhua Du
- Beijing
City Key Laboratory of Drug Target and Screening Research, National
Center for Pharmaceutical Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union
Medical College, Beijing 100050, China
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20
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Yuan PH, Bi YC, Su B, Yang DZ, Gong NB, Zhang L, Lu Y, Du GH. Analysis of Four Solvatomorphs of Betulin by TG-DTA-EI/PI-MS System Equipped with the Skimmer-Type Interface. NATURAL PRODUCTS AND BIOPROSPECTING 2020; 10:141-152. [PMID: 32415420 PMCID: PMC7253561 DOI: 10.1007/s13659-020-00243-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 05/08/2020] [Indexed: 06/11/2023]
Abstract
Betulin (BE) has exceedingly become a potential natural product, providing multiple pharmacological and biological activities, including anti-cancer, anti-viral, and anti-inflammatory benefits. Previous research indicated that the solvatomorphism of BE can easily occur through crystallization with different organic solvents. This property of BE can directly affect its extraction, isolation, and preparation process. In this study, a system of thermogravimetry (TG)-differential thermal analysis (DTA) coupled with mass spectrometry (MS) with electron ionization (EI) and photoionization (PI) capability, equipped with the skimmer-type interface (i.e., skimmer-type interfaced TG-DTA-EI/PI-MS system), as a real-time and onsite analysis technique, was employed. Then, four solvatomorphs of BE, namely, with pyridine and water (A), sec-butanol (B), n,n-dimethylformamide (DMF) (C), and isopropanol (V), were analyzed for the first time. Finally, five kinds of the main volatile gaseous species, including H2O, pyridine, sec-butanol, DMF, and isopropanol, were identified clearly. Furthermore, the multi-step desolvation processes of the four solvatomorphs of BE were revealed by this system for the first time. This system showed great potential for the rapid and accurate analysis of various solvatomorphs of natural products.
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Affiliation(s)
- Peng-Hui Yuan
- Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, People's Republic of China
| | - Yan-Cai Bi
- Soteria Pharmaceutical Co., Ltd, Laiwu, 271100, People's Republic of China
| | - Bin Su
- Soteria Pharmaceutical Co., Ltd, Laiwu, 271100, People's Republic of China
| | - De-Zhi Yang
- Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, People's Republic of China
| | - Ning-Bo Gong
- Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, People's Republic of China
| | - Li Zhang
- Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, People's Republic of China.
| | - Yang Lu
- Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, People's Republic of China.
| | - Guan-Hua Du
- Beijing City Key Laboratory of Drug Target and Screening Research, National Center for Pharmaceutical Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, People's Republic of China
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21
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Pan B, Wang Z, Shen Y, Wei L, Wei H, Dang L. Solvatomorphism and phase transformation of CL-20: probing properties and investigating mechanisms. CrystEngComm 2020. [DOI: 10.1039/d0ce00059k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Five novel CL-20 solvates were prepared and fully characterized, and the solvate formation and phase transformation processes were systematically investigated.
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Affiliation(s)
- Bochen Pan
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- P.R. China
| | - Zhanzhong Wang
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- P.R. China
| | - Yichun Shen
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- P.R. China
| | - Liangxiao Wei
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- P.R. China
| | - Hongyuan Wei
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- P.R. China
| | - Leping Dang
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- P.R. China
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22
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Werner JE, Swift JA. Data mining the Cambridge Structural Database for hydrate–anhydrate pairs with SMILES strings. CrystEngComm 2020. [DOI: 10.1039/d0ce00273a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A search method based on SMILES string matching was developed to identify hydrate–anhydrate structure pairs in the Cambridge Structure Database.
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Affiliation(s)
- Jen E. Werner
- Georgetown University
- Department of Chemistry
- Washington
- USA
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23
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Araya-Sibaja AM, Maduro de Campos CE, Fandaruff C, Vega-Baudrit JR, Guillén-Girón T, Navarro-Hoyos M, Cuffini SL. Irbesartan desmotropes: Solid-state characterization, thermodynamic study and dissolution properties. J Pharm Anal 2019; 9:339-346. [PMID: 31929943 PMCID: PMC6951487 DOI: 10.1016/j.jpha.2019.07.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 07/08/2019] [Accepted: 07/09/2019] [Indexed: 11/01/2022] Open
Abstract
Irbesartan (IBS) is a tetrazole derivative and antihypertensive drug that has two interconvertible structures, 1H- and 2H-tautomers. The difference between them lies in the protonation of the tetrazole ring. In the solid-state, both tautomers can be isolated as crystal forms A (1H-tautomer) and B (2H-tautomer). Studies have reported that IBS is a polymorphic system and its forms A and B are related monotropically. These reports indicate form B as the most stable and less soluble form. Therefore, the goal of this contribution is to demonstrate through a complete solid-state characterization, thermodynamic study and dissolution properties that the IBS forms are desmotropes that are not related monotropically. However, the intention is also to call attention to the importance of conducting strict chemical and in solid-state quality controls on the IBS raw materials. Hence, powder X-ray diffraction (PXRD) and Raman spectroscopy (RS) at ambient and non-ambient conditions, differential scanning calorimetry (DSC), hot stage microscopy (HSM), Fourier transform infrared (FT-IR) and scanning electron microscopy (SEM) techniques were applied. Furthermore, intrinsic dissolution rate (IDR) and structural stability studies at 98% relative humidity (RH), 25 °C and 40 °C were conducted as well. The results show that in fact, form A is approximately four-fold more soluble than form B. In addition, both IBS forms are stable at ambient conditions. Nevertheless, structural and/or chemical instability was observed in form B at 40 °C and 98% RH. IBS has been confirmed as a desmotropic system rather than a polymorphic one. Consequently, forms A and B are not related monotropically.
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Affiliation(s)
- Andrea Mariela Araya-Sibaja
- Laboratorio Nacional de Nanotecnología LANOTEC-CeNAT-CONARE, 1174-1200, Pavas, San José, Costa Rica
- Escuela de Ciencia e Ingeniería de los Materiales, Tecnológico de Costa Rica, Cartago, 159-7050, Costa Rica
- Escuela de Química, Universidad de Costa Rica, San Pedro de Montes de Oca, 2060, San José, Costa Rica
| | | | | | - José Roberto Vega-Baudrit
- Laboratorio Nacional de Nanotecnología LANOTEC-CeNAT-CONARE, 1174-1200, Pavas, San José, Costa Rica
- Laboratorio de Investigación y Tecnología de Polímeros POLIUNA, Escuela de Química, Universidad Nacional de Costa Rica, Heredia, 86-3000, Costa Rica
| | - Teodolito Guillén-Girón
- Escuela de Ciencia e Ingeniería de los Materiales, Tecnológico de Costa Rica, Cartago, 159-7050, Costa Rica
| | - Mirtha Navarro-Hoyos
- Escuela de Química, Universidad de Costa Rica, San Pedro de Montes de Oca, 2060, San José, Costa Rica
| | - Silvia Lucía Cuffini
- Instituto de Ciência e Técnica, Universidade Federal de São Paulo, São José dos Campos, São Paulo, Brazil
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24
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Latreche M, Willart JF, Guerain M, Hédoux A, Danède F. Using Milling to Explore Physical States: The Amorphous and Polymorphic Forms of Sulindac. J Pharm Sci 2019; 108:2635-2642. [DOI: 10.1016/j.xphs.2019.03.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 03/11/2019] [Accepted: 03/14/2019] [Indexed: 11/16/2022]
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25
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Lombardo FC, Perissutti B, Keiser J. Activity and pharmacokinetics of a praziquantel crystalline polymorph in the Schistosoma mansoni mouse model. Eur J Pharm Biopharm 2019; 142:240-246. [PMID: 31265895 DOI: 10.1016/j.ejpb.2019.06.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 06/03/2019] [Accepted: 06/28/2019] [Indexed: 01/10/2023]
Abstract
Schistosomiasis is a global disease of significant public health relevance. Only one racemic drug, praziquantel, characterized by low bioavailability, low water solubility and extensive first pass metabolism, is currently available. We studied a new praziquantel formulation (polymorph B), which is based on a racemic praziquantel crystalline polymorph (TELCEU01). Its in vitro activity was tested on newly transformed schistosomula (NTS) and adult Schistosoma mansoni. In vivo studies were conducted in mice harboring chronic S. mansoni infections. Pharmacokinetic (PK) profiles of R- and S-praziquantel and R- and S- polymorph B following oral administration with both formulations were generated by sampling mice at 30, 60, 240 min and 24 h post-treatment, followed by LC-MS/MS analysis. PK parameters were calculated using a non-compartmental analysis with a linear trapezoidal model. In vitro, commercial praziquantel and the polymorph B performed similarly on both NTS (IC50 = 2.58 and 2.40 µg/mL at 72 h) and adults (IC50 = 0.05 and 0.07 µg/mL at 72 h). Praziquantel showed higher in vivo efficacy with an ED50 of 58.75 mg/kg compared to an ED50 of 122.61 mg/kg for the polymorph B. The PK profiles of the two drugs exhibited differences: R-praziquantel showed an overall 40% higher area under the plasma drug concentration-time curve (AUC0→24) (R-praziquantel = 3.42; R-polymorph B = 2.05 h*µg/mL) and an overall 30% lower apparent clearance (Cl/F) (R-praziquantel = 70.68 and R-polymorph B = 97.63 (mg)/(µg/mL)/h). Despite the lack of improved activity and PK properties of polymorph B against S. mansoni, here presented; research on pharmaceutical polymorphism remains a valid and cost-effective option for the development of new praziquantel formulations with enhanced properties such as increased solubility and/or dissolution.
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Affiliation(s)
- Flavio C Lombardo
- Swiss Tropical and Public Health Institute, Socinstrasse 57, CH-4002 Basel, Switzerland; Universität Basel, Petersplatz 1, CH-4001 Basel, Switzerland
| | - Beatrice Perissutti
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, p.le Europa 1, 34127 Trieste, Italy
| | - Jennifer Keiser
- Swiss Tropical and Public Health Institute, Socinstrasse 57, CH-4002 Basel, Switzerland; Universität Basel, Petersplatz 1, CH-4001 Basel, Switzerland.
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26
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Rexrode NR, Orien J, King MD. Effects of Solvent Stabilization on Pharmaceutical Crystallization: Investigating Conformational Polymorphism of Probucol Using Combined Solid-State Density Functional Theory, Molecular Dynamics, and Terahertz Spectroscopy. J Phys Chem A 2019; 123:6937-6947. [PMID: 31099570 DOI: 10.1021/acs.jpca.9b00792] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Solid-state density functional theory (DFT), molecular dynamics (MD), and terahertz (THz) spectroscopy were used to study the formation of enantiotropically related conformational Form I and Form II polymorphs of the pharmaceutical compound, probucol. DFT calculations were performed on the crystal systems to compare relative lattice energies and the solvent stabilization of the metastable Form II structure. The thermodynamics of solvent inclusion in the Form II·MeOH crystal system were determined from MD simulations, as was the favored conformation of molecular probucol in methanol and ethanol solutions. The findings from both solid-state DFT and MD calculations suggest that the preferred molecular orientations of the probucol molecule in solution and the probable inclusion of methanol in the crystal lattice during the crystallization process lead to the solvent selectivity of the probucol polymorph formation. The additional stabilization energy provided by the crystallization solvent facilitates the nucleation and growth of the Form II polymorph under conditions that favor this metastable crystal form over the thermodynamically stable Form I, despite the higher energy molecular and crystalline configurations of probucol Form II. We demonstrate the influence of solvent on the formation of pharmaceutical polymorphs and provide a molecular-level view of complex interactions leading to polymorphism using a combination of computational methods and THz spectral data.
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27
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Multiple conformations and supramolecular synthons in almost fifty crystal structures of the anti-HIV/HBV drug lamivudine. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.12.099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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28
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Ternary phase diagrams and solvate transformation thermodynamics of omeprazole sodium in different solvent mixtures. Chin J Chem Eng 2019. [DOI: 10.1016/j.cjche.2018.07.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Li Z, Jia L, Shi P, Jiang S, Gong J, Wu S. Versatile solid forms of boscalid: insight into the crystal structures and phase transformations. CrystEngComm 2019. [DOI: 10.1039/c9ce00306a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The crystal structures of six solid forms of boscalid were reported for the first time and the transformation relationship between different phases was explored in detail.
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Affiliation(s)
- Zhonghua Li
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Lina Jia
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Peng Shi
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Shuang Jiang
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Junbo Gong
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Songgu Wu
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
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30
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Wei N, Jia L, Shang Z, Gong J, Wu S, Wang J, Tang W. Polymorphism of levofloxacin: structure, properties and phase transformation. CrystEngComm 2019. [DOI: 10.1039/c9ce00847k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The landscape of solid-state crystal forms of levofloxacin is further expanded with one solved anhydrous α form and three newly discovered solvates including n-propanol solvate, ethylene glycol solvate and acetic acid solvate.
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Affiliation(s)
- Ning Wei
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Lina Jia
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Zeren Shang
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Junbo Gong
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Songgu Wu
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Jingkang Wang
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Weiwei Tang
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
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31
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Custodio JM, Vaz WF, de Castro MR, Bernardes A, Naves RF, Moura AF, de Moraes MO, da Silva CC, Martins FT, Perez CN, Napolitano HB. Solvent-driven structural adaptation in a novel anticancer sulfonamide chalcone. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.07.059] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Hasa D, Pastore M, Arhangelskis M, Gabriele B, Cruz-Cabeza AJ, Rauber GS, Bond AD, Jones W. On the kinetics of solvate formation through mechanochemistry. CrystEngComm 2019. [DOI: 10.1039/c8ce00871j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
We demonstrate that solvates obtained through mechanochemistry are the thermodynamic products, and that the kinetics of solvate formation are related to the easiness of breaking the reactant crystals.
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Affiliation(s)
- Dritan Hasa
- Leicester School of Pharmacy
- De Montfort University
- LE1 9BH Leicester
- UK
| | - Mariana Pastore
- Department of Chemical and Pharmaceutical Sciences
- University of Trieste
- 34127 Trieste
- Italy
| | | | - Benjamin Gabriele
- School of Chemical Engineering and Analytical Science
- University of Manchester
- Manchester
- UK
| | - Aurora J. Cruz-Cabeza
- School of Chemical Engineering and Analytical Science
- University of Manchester
- Manchester
- UK
| | | | - Andrew D. Bond
- Department of Chemistry
- University of Cambridge
- CB2 1EW Cambridge
- UK
| | - William Jones
- Department of Chemistry
- University of Cambridge
- CB2 1EW Cambridge
- UK
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33
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Competition between coordination bonds and hydrogen bonding interactions in solvatomorphs of copper(II), cadmium(II) and cobalt(II) complexes with 2,2′-bipyridyl and acetate. Z KRIST-CRYST MATER 2018. [DOI: 10.1515/zkri-2018-2097] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The delicate balance among conformation, coordination bonds and hydrogen bonding has been probed in solvatomorphs of known metal-organic molecules synthesised from copper(II), cadmium(II) and cobalt(II) with acetate (OAc) and 2,2′-bipyridine (bipy). The Cu(OAc)2(bipy) complex, isolated as a pentahydrate, has the acetate ligands oriented to opposite sides of the coordination square plane. DFT calculations show the energy difference between this structure and a syn form amount to approximately 16 kJ/mol. The presence of lattice water enables the formation of O–H···O hydrogen bonds with the acetate ligands. Different coordination numbers and energies are found as a function of the number of water molecules co-crystallising in the Cd(OAc)2(bipy)(OH2)·3H2O and [Co(OAc)(bipy)2](OAc)·3H2O complexes.
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34
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Bongioanni A, Araújo BS, de Oliveira YS, Longhi MR, Ayala A, Garnero C. Improving Properties of Albendazole Desmotropes by Supramolecular Systems with Maltodextrin and Glutamic Acid. AAPS PharmSciTech 2018; 19:1468-1476. [PMID: 29464593 DOI: 10.1208/s12249-018-0952-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 01/02/2018] [Indexed: 02/02/2023] Open
Abstract
Albendazole, an effective broad-spectrum anthelmintic agent, showed unpredictable therapeutic response caused by poor water solubility and slow dissolution rate. Then, novel binary and multicomponent supramolecular systems of two different solid forms of albendazole (I and II) with maltodextrin alone or with glutamic acid were studied as an alternative to improve the oral bioavailability of albendazole. The interactions and effects on the properties of albendazole were studied in solution and solid state. The solid systems were characterized using Raman and Fourier transform-infrared spectroscopy, thermal analysis, powder X-ray diffraction, and scanning electron microscopy. The solubility measurements, performed in aqueous and simulated gastric fluid, showed that albendazole (form II) was the most soluble form, while its supramolecular systems showed the highest solubility in simulated gastric fluid. On the other hand, the dissolution profiles of binary and multicomponent systems in simulated gastric fluid displayed pronounced increments of the dissolved drug and a faster dissolution rate compared to those of free albendazole forms. Thus, these supramolecular structures constitute an interesting alternative to improve the physicochemical properties of albendazole, with potential application for the preparation of pharmaceutical oral formulations.
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35
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New Polymorph Form of Dexamethasone Acetate. J Pharm Sci 2017; 107:672-681. [PMID: 29031975 DOI: 10.1016/j.xphs.2017.10.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 09/18/2017] [Accepted: 10/03/2017] [Indexed: 11/22/2022]
Abstract
A new monohydrated polymorph of dexamethasone acetate was crystallized and its crystal structure characterized. The different analytical techniques used for describing its structural and vibrational properties were: single crystal and polycrystal X-ray diffraction, solid state nuclear magnetic resonance, infrared spectroscopy. A Hirshfeld surface analysis was carried out through self-arrangement cemented by H-bonds observed in this new polymorph. This new polymorph form appeared because of self-arrangement via classical hydrogen bonds around the water molecule.
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36
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Dey D, Chopra D. Quantitative analysis of solid-state diversity in trifluoromethylated phenylhydrazones. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2017; 73:781-793. [PMID: 28980982 DOI: 10.1107/s2052520617006643] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Accepted: 05/03/2017] [Indexed: 06/07/2023]
Abstract
The cooperative roles of various structural motifs associated with the presence of different intermolecular interactions in the formation of molecular crystals are investigated in a series of trifluoromethylated phenylhydrazones. Out of the six compounds analysed, two exhibit three-dimensional structural similarities with geometrically equivalent building blocks, while a third exists as two polymorphic forms crystallized from ethanol solutions at low temperature (277 K) and room temperature (298 K), respectively. The compounds were characterized via single-crystal and powder X-ray diffraction techniques and differential scanning calorimetry. In the absence of any strong hydrogen bonding, the supramolecular constructs are primarily stabilized via molecular pairs with a high dispersion-energy contribution, due to the presence of molecular stacking along the molecular backbone along with C-H...π interactions in the solid state, in preference to an electrostatic contribution. The interaction energies for the most stabilizing molecular building blocks are in the range -29 to -43 kJ mol-1. In addition, weak N-H...F, C-H...F and N-H...C interactions and F...F, F...C, F...N and C...N contacts act as secondary motifs, providing additional stability to the crystal packing. The overall molecular arrangements are carefully analysed in terms of their nature and energetics, and the roles of different molecular pairs towards the crystal structure are delineated. A topological study using the quantum theory of atoms in molecules was used to characterize all the atomic interactions in the solid state. It established the presence of (3, -1) bond critical points and the closed-shell nature of all the interactions.
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Affiliation(s)
- Dhananjay Dey
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhouri, Bhopal-By-Pass Road, Bhopal, Madhya Pradesh 462 066, India
| | - Deepak Chopra
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhouri, Bhopal-By-Pass Road, Bhopal, Madhya Pradesh 462 066, India
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37
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Recent progress of structural study of polymorphic pharmaceutical drugs. Adv Drug Deliv Rev 2017; 117:71-85. [PMID: 27940141 DOI: 10.1016/j.addr.2016.12.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 12/02/2016] [Accepted: 12/06/2016] [Indexed: 12/20/2022]
Abstract
This review considers advances in the understanding of active pharmaceutical ingredient polymorphism since around 2010 mainly from a structural view point, with a focus on twelve model drugs. New polymorphs of most of these drugs have been identified despite that the polymorphism of these old drugs has been extensively studied so far. In addition to the conventional modifications of preparative solvents, temperatures, and pressure, more strategic structure-based methods have successfully yielded new polymorphs. The development of analytical techniques, including X-ray analyses, spectroscopy, and microscopy has facilitated the identification of unknown crystal structures and also the discovery of new polymorphs. Computational simulations have played an important role in explaining and predicting the stability order of polymorphs. Furthermore, these make significant contributions to the design of new polymorphs by considering structure and energy. The new technologies and insights discussed in this review will contribute to the control of polymorphic forms, both during manufacture and in the drug formulation.
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38
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39
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McCoy CF, Murphy DJ, Boyd P, Derrick T, Spence P, Devlin B, Malcolm RK. Packing Polymorphism of Dapivirine and Its Impact on the Performance of a Dapivirine-Releasing Silicone Elastomer Vaginal Ring. J Pharm Sci 2017; 106:2015-2025. [PMID: 28456732 DOI: 10.1016/j.xphs.2017.04.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 03/20/2017] [Accepted: 04/17/2017] [Indexed: 02/05/2023]
Abstract
A silicone elastomer vaginal ring providing sustained release over 28 days of the anti-retroviral microbicide dapivirine has recently completed phase III clinical testing and showed moderate protection against HIV acquisition. In support of the product licensure program, we report the impact of dapivirine packing polymorphism on the thermal and solubility characteristics of dapivirine and on the in vitro performance of the 25 mg dapivirine ring product. This is the first time that polymorphism has been reported for a drug-releasing vaginal ring product. Thermal, particle size, powder X-ray diffraction, and thermodynamic solubility analyses of dapivirine polymorphic forms I and IV, both of which are persistent at room temperature and with form I being the thermodynamically stable form, were conducted for both micronized and non-micronized materials. No significant differences in solubility between DPV forms I and IV were observed in media commonly used for in vitro release testing. Matrix-type silicone elastomer vaginal rings were manufactured and the impact of dapivirine polymorphism on key in vitro parameters (compression and tensile behavior; content assay; in vitro release; residual content assay) was investigated. The data demonstrate that dapivirine packing polymorphism has no significant impact on in vitro performance of the 25 mg dapivirine vaginal ring.
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Affiliation(s)
- Clare F McCoy
- School of Pharmacy, Queen's University Belfast, Belfast BT9 7BL, UK
| | | | - Peter Boyd
- School of Pharmacy, Queen's University Belfast, Belfast BT9 7BL, UK
| | - Tiffany Derrick
- International Partnership for Microbicides, Silver Spring, Maryland 20910
| | - Patrick Spence
- International Partnership for Microbicides, Silver Spring, Maryland 20910
| | - Brid Devlin
- International Partnership for Microbicides, Silver Spring, Maryland 20910
| | - R Karl Malcolm
- School of Pharmacy, Queen's University Belfast, Belfast BT9 7BL, UK.
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40
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Wang Y, Sun P, Xu S, Du S, Zhang T, Yu B, Zhang S, Wang Y, Wang Y, Gong J. Solution-Mediated Phase Transformation of Argatroban: Ternary Phase Diagram, Rate-Determining Step, and Transformation Kinetics. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b04760] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yaping Wang
- School
of Chemical Engineering, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Panpan Sun
- School
of Chemical Engineering, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Shijie Xu
- School
of Chemical Engineering, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Shichao Du
- School
of Chemical Engineering, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Teng Zhang
- School
of Chemical Engineering, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Bo Yu
- School
of Chemical Engineering, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Shixin Zhang
- Tianjin Hengbida Chemical Synthesis Company Ltd., Tianjin 300072, China
| | - Yang Wang
- Tianjin Hengbida Chemical Synthesis Company Ltd., Tianjin 300072, China
| | - Yuewei Wang
- Tianjin Hengbida Chemical Synthesis Company Ltd., Tianjin 300072, China
| | - Junbo Gong
- School
of Chemical Engineering, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
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41
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Wu YD, Zhang XL, Liu XH, Xu J, Zhang M, Shen K, Zhang SH, He YM, Ma Y, Zhang AH. The preparation, characterization, structure and dissolution analysis of apremilast solvatomorphs. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2017; 73:305-313. [DOI: 10.1107/s2053229617002984] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Accepted: 02/22/2017] [Indexed: 11/10/2022]
Abstract
Apremilast (AP) {systematic name: (S)-2-[1-(3-ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl]-4-acetamidoisoindoline-1,3-dione} is an inhibitor of phosphodieasterase-4 (PDE4) and is indicated for the treatment of adult patients with active psoriatic arthritis. The ability of AP to form solvates has been investigated and three solvatomorphs of AP, namely, the AP ethyl acetate hemisolvate, C22H24N2O7S·0.5C4H8O2, the AP toluene hemisolvate, C22H24N2O7S·0.5C7H8, and the AP dichloromethane monosolvate, C22H24N2O7S·CH2Cl2, were obtained. The three AP solvatomorphs were characterized by X-ray powder diffraction, thermogravimetric analysis and differential scanning calorimetry. Single-crystal X-ray diffraction was used to analyze the structures, crystal symmetry, packing modes, stoichiometry and hydrogen-bonding interactions of the solvatomorphs. In addition, dissolution analyses were performed to study the dissolution rates of different AP solvatomorph tablets in vitro and to make comparisons with commercial apremilast tablets (produced by Celgene); all three solvatomorphs showed similar dissolution rates and similar values of the similarity factor f2 in a comparison of their dissolution profiles.
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42
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Zhang XR, He SF, Zhang S, Li J, Li S, Liu JS, Zhang L. Polymorphs and solvatomorphs of azilsartan medoxomil: Elucidation of solvent-induced construction and conformational diversity. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.10.022] [Citation(s) in RCA: 4] [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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43
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Yang D, Gong N, Zhang L, Lu Y, Du G. Structural and Computational Study of 4 New Solvatomorphs of Betulin: A Combined X-Ray, Hirshfeld Surface, and Thermal Analysis. J Pharm Sci 2016; 106:826-834. [PMID: 27989367 DOI: 10.1016/j.xphs.2016.11.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 10/23/2016] [Accepted: 11/01/2016] [Indexed: 11/27/2022]
Abstract
Four new solvatomorphs of betulin were reported and characterized by X-ray diffractometry as well as thermal and vibrational spectroscopic analyses. Single-crystal X-ray diffraction was used to analyze the X-ray structures of the compounds and confirmed the stoichiometric ratio between the host and guest molecules from thermal data. Results indicated that solvatomorphism occurred in several betulin solvates. Changes in intermolecular arrangements, stoichiometry, and hydrogen-bonding interactions of solvatomorphs were due to solvent incorporation to solvates. Hirshfeld surface analyses, especially dnorm surface and fingerprint plots, were used to determine intermolecular interactions in the crystal network. Solvent molecules played an important role in the construction of a 3D architecture. The stabilities of these solvates were evaluated by thermal analyses. Nonisothermal kinetic analysis was used to explain the kinetics of solid-solid phase transition (desolvation) of betulin solvates. The apparent activation energies were evaluated using Kissinger and Ozawa methods. Moreover, phase transitions were visually investigated by hot-stage microscopic analysis.
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Affiliation(s)
- Dezhi Yang
- Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ningbo Gong
- Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Li Zhang
- Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yang Lu
- Beijing City Key Laboratory of Polymorphic Drugs, Center of Pharmaceutical Polymorphs, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Guanhua Du
- Beijing City Key Laboratory of Drug Target and Screening Research, National Center for Pharmaceutical Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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44
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Nguyen DN, Clasen C, Van den Mooter G. Encapsulating darunavir nanocrystals within Eudragit L100 using coaxial electrospraying. Eur J Pharm Biopharm 2016; 113:50-59. [PMID: 27993734 DOI: 10.1016/j.ejpb.2016.12.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 11/07/2016] [Accepted: 12/04/2016] [Indexed: 10/20/2022]
Abstract
Electrospraying is renowned for its simplicity and versatility, and which can effectively produce particles with well-controlled size, size distribution, particle shape, morphology and microstructure at the nano/microscale. In this study, coaxial electrospraying was used to investigate its feasibility for preparing nanoparticles made up of nanocrystals encapsulated within a polymer shell. Firstly, aqueous nanosuspensions of darunavir were prepared by wet media milling. Then the nanosuspension and solutions of an enteric polymer, Eudragit L100, were used as the inner/core liquid and outer/shell liquid in a coaxial electrospraying setup, respectively. As long as a sufficiently high voltage was applied, a stable Taylor cone-jet mode was obtained to produce very fine core-shell structure nanoparticles with high darunavir encapsulation efficiency of approximately 90%. The influence of the starting nanosuspension and the flow rates on the characteristics of the final electrosprayed particles was also evaluated. Using an optimized nanosuspension with reasonable size, size distribution and flow rates, the enteric coating layer reduced the percentage of DRV release in acidic medium in the in vitro dissolution test to ca. 20%. This study indicates that coaxial electrospraying is a potential and unique technique for encapsulating drug nanocrystals within a polymeric shell.
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Affiliation(s)
- Duong Nhat Nguyen
- KU Leuven - University of Leuven, Department of Pharmaceutical and Pharmacological Sciences, Drug Delivery and Disposition, Leuven B-300, Belgium
| | - Christian Clasen
- KU Leuven - University of Leuven, Department of Chemical Engineering, Leuven B-3001, Belgium
| | - Guy Van den Mooter
- KU Leuven - University of Leuven, Department of Pharmaceutical and Pharmacological Sciences, Drug Delivery and Disposition, Leuven B-300, Belgium.
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45
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Bouanga Boudiombo JS, Jacobs A. Solvates of selected fenamic acids with substituted pyridines: structure, thermal stability and desolvation. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS 2016; 72:836-845. [DOI: 10.1107/s2052520616014128] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 09/05/2016] [Indexed: 11/10/2022]
Abstract
Mefenamic acid (MA) formed solvates with 2-picoline (2PIC), 3-picoline (3PIC), 4-picoline (4PIC) and 3-chloropyridine (3CLPYR). The solvates crystallized in the space group P\bar 1 with the carboxylic acid of MA hydrogen-bonded to the nitrogen of the substituted pyridine. Tolfenamic acid (TFA) formed solvates with 2PIC and 3PIC, the crystal structures successfully solved in the space groupsP21/nandPbca, respectively. The fenamate conformation varied depending on the acid and the included solvent. Similarities were observed in the structures involving MA. The two solvate structures of TFA had different packing arrangements. Grinding and slurry experiments were also successful for the preparation of all of the compounds except MA·2PIC. Recrystallization, grinding and slurry investigations of MA and 2PIC yielded a polymorph; the structure was successfully solved inP21/n. Additionally, the thermal stability of the solvates was determined. Desolvation experiments were also performed and the resultant powders were analysed using powder X-ray diffraction.
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46
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Yang D, Gong N, Zhang L, Lu Y. Isostructurality Among 5 Solvatomorphs of Betulin: X-Ray Structure and Characterization. J Pharm Sci 2016; 105:1867-1873. [DOI: 10.1016/j.xphs.2016.03.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2015] [Revised: 02/27/2016] [Accepted: 03/03/2016] [Indexed: 11/28/2022]
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47
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Gichumbi JM, Friedrich HB, Omondi B. Solvato-polymorph of [(η6-C6H6)RuCl (L)]PF6 (L = (2,6-dimethyl-phenyl-pyridin-2-yl methylene amine). J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.02.040] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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48
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Nie J, Yang D, Hu K, Lu Y. Study on four polymorphs of bifendate based on X-ray crystallography. Acta Pharm Sin B 2016; 6:234-42. [PMID: 27175335 PMCID: PMC4856952 DOI: 10.1016/j.apsb.2016.03.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 03/09/2016] [Accepted: 03/15/2016] [Indexed: 01/25/2023] Open
Abstract
Bifendate, a synthetic anti-hepatitis drug, exhibits polycrystalline mode phenomena with 2 polymorphs reported (forms A and B). Single crystals of the known crystalline form B and 3 new crystallosolvates involving bifendate solvated with tetrahydrofuran (C), dioxane (D), and pyridine (E) in a stoichiometric ratio of 1:1 were obtained and characterized by X-ray crystallography, thermal analysis, and Fourier transform infrared (FT-IR) spectroscopy. The differences in molecular conformation, intermolecular interaction and crystal packing arrangement for the four polymorphs were determined and the basis for the polymorphisms was investigated. The rotation of single bonds resulted in different orientations for the biphenyl, methyl ester and methoxyl groups. All guest solvent molecules interacted with the host molecule via an interesting intercalative mode along the [1 0 0] direction in the channel formed by the host molecules through weak aromatic stacking interactions or non-classical hydrogen bonds, of which the volume and planarity played an important role in the intercalation of the host with the guest. The incorporation of solvent-augmented rotation of the C–C bond of the biphenyl group had a striking effect on the host molecular conformation and contributed to the formation of bifendate polymorphs. Moreover, the simulated powder X-ray diffraction (PXRD) patterns for each form were calculated on the basis of the single-crystal data and proved to be unique. The single-crystal structures of the four crystalline forms are reported in this paper.
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Key Words
- ADPs, anisotropic displacement parameters
- ALT, alanine transaminase
- Bifendate
- CCDC, Cambridge crystallographic data center
- DDB, dimethyl dimethoxy biphenyl dicarboxylate
- DSC, differential scanning calorimetry
- FT-IR
- FT-IR, Fourier transform infrared spectroscopy
- MW, molecular weight
- PXRD, powder X-ray diffraction
- Polymorphism
- SCXRD, single-crystal X-ray diffraction
- Single-crystal structure
- Solvatomorphism
- TGA, thermal gravimetric analyzer.
- Thermal analysis
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Affiliation(s)
| | | | | | - Yang Lu
- Corresponding author. Tel.: +86 10 63165212.
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49
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Synthesis, structure and cytotoxic activity of acetylenic derivatives of betulonic and betulinic acids. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2015.10.102] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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50
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Singh SS, Vasantha KY, Sattur AP, Thakur TS. Experimental and computational crystal structure landscape study of nigerloxin: a fungal metabolite from Aspergillus niger. CrystEngComm 2016. [DOI: 10.1039/c5ce02572a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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