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Dissolution Advantage of Nitazoxanide Cocrystals in the Presence of Cellulosic Polymers. Pharmaceutics 2019; 12:pharmaceutics12010023. [PMID: 31881696 PMCID: PMC7022799 DOI: 10.3390/pharmaceutics12010023] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/19/2019] [Accepted: 12/22/2019] [Indexed: 12/26/2022] Open
Abstract
The effect of hydroxypropyl methylcellulose (HPMC) and methylcellulose (Methocel® 60 HG) on the dissolution behavior of two cocrystals derived from nitazoxanide (NTZ), viz., nitazoxanide-glutaric acid (NTZ-GLU, 1:1) and nitazoxanide-succinic acid (NTZ-SUC, 2:1), was explored. Powder dissolution experiments under non-sink conditions showed similar dissolution profiles for the cocrystals and pure NTZ. However, pre-dissolved cellulosic polymer in the phosphate dissolution medium (pH 7.5) modified the dissolution profile of NTZ when starting from the cocrystals, achieving transient drug supersaturation. Subsequent dissolution studies under sink conditions of polymer-based pharmaceutical powder formulations with NTZ-SUC cocrystals gave a significant improvement of the apparent solubility of NTZ when compared with analogous formulations of pure NTZ and the physical mixture of NTZ and SUC. Scanning electron microscopy and powder X-ray diffraction analysis of samples recovered after the powder dissolution studies showed that the cocrystals undergo fast dissolution, drug supersaturation and precipitation both in the absence and presence of polymer, suggesting that the solubilization enhancement is due to polymer-induced delay of nucleation and crystal growth of the less soluble NTZ form. The study demonstrates that the incorporation of an appropriate excipient in adequate concentration can be a key factor for inducing and maintaining the solubilization of poorly soluble drugs starting from co-crystallized solid forms. In such a way, cocrystals can be suitable for the development of solid dosage forms with improved bioavailability and efficacy in the treatment of important parasitic and viral diseases, among others.
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152
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Brázda P, Palatinus L, Babor M. Electron diffraction determines molecular absolute configuration in a pharmaceutical nanocrystal. Science 2019; 364:667-669. [PMID: 31097664 DOI: 10.1126/science.aaw2560] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 04/03/2019] [Indexed: 01/19/2023]
Abstract
Determination of the absolute configuration of organic molecules is essential in drug development and the subsequent approval process. We show that this determination is possible through electron diffraction using nanocrystalline material. Ab initio structure determination by electron diffraction has so far been limited to compounds that maintain their crystallinity after a dose of one electron per square angstrom or more. We present a complete structure analysis of a pharmaceutical cocrystal of sofosbuvir and l-proline, which is about one order of magnitude less stable. Data collection on multiple positions of a crystal and an advanced-intensity extraction procedure enabled us to solve the structure ab initio. We further show that dynamical diffraction effects are strong enough to permit unambiguous determination of the absolute structure of material composed of light scatterers.
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Affiliation(s)
- Petr Brázda
- Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, 18200 Prague 8, Czech Republic.
| | - Lukáš Palatinus
- Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, 18200 Prague 8, Czech Republic
| | - Martin Babor
- University of Chemistry and Technology, Technická 3, 16628 Prague 6, Czech Republic.,Zentiva, U Kabelovny 130, 10237 Prague 10, Czech Republic
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153
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Haneef J, Arora P, Chadha R. Implication of Coformer Structural Diversity on Cocrystallization Outcomes of Telmisartan with Improved Biopharmaceutical Performance. AAPS PharmSciTech 2019; 21:10. [PMID: 31802267 DOI: 10.1208/s12249-019-1559-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 11/06/2019] [Indexed: 12/26/2022] Open
Abstract
Crystal engineering approach was utilized for the development of different multicomponent solid forms of telmisartan (TEL) to improve its oral bioavailability. In this context, two cocrystals, gentisic acid (GA) and maleic acid (MA), while two eutectic mixtures, para-aminobenzoic acid (PABA) and adipic acid (AA), were successfully prepared and characterized by different analytical tools. Both the cocrystals exhibited characteristic heterosynthons, viz. OHacid⋯Narom and OHacid⋯O, to propagate new network. Structural features of coformers has been correlated with the outcomes of cocrystallization approach. Coformers having auxiliary functionality in addition to complementary functional groups have high propensity to generate cocrystals. However, multicomponent where auxiliary functionality is lacking, such combinations, is shown to form eutectic mixtures owing to strong homomeric interaction. Besides, the developed cocrystals and eutectic mixtures showed higher aqueous solubility (3-5.5-fold) and intrinsic dissolution rate (1-2.6-fold) over pure TEL. In vivo studies also revealed significant improvement in relative bioavailability (2-2.6-fold). The study also shed light on the implications of eutectic mixtures in mitigating the solubility issues of drugs which are often considered negative results of cocrystallization strategy.
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154
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Sun W, Zuo L, Zhao T, Zhu Z, Shan G. Five solvates of a multicomponent pharmaceutical salt formed by berberine and diclofenac. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2019; 75:1644-1651. [PMID: 31802754 DOI: 10.1107/s2053229619015432] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 11/14/2019] [Indexed: 11/10/2022]
Abstract
A multicomponent pharmaceutical salt formed by the isoquinoline alkaloid berberine (5,6-dihydro-9,10-dimethoxybenzo[g]-1,3-benzodioxolo[5,6-a]quinolizinium, BBR) and the nonsteroidal anti-inflammatory drug diclofenac {2-[2-(2,6-dichloroanilino)phenyl]acetic acid, DIC} was discovered. Five solvates of the pharmaceutical salt form were obtained by solid-form screening. These five multicomponent solvates are the dihydrate (BBR-DIC·2H2O or C20H18NO4+·C14H10Cl2NO2-·2H2O), the dichloromethane hemisolvate dihydrate (BBR-DIC·0.5CH2Cl2·2H2O or C20H18NO4+·C14H10Cl2NO2-·0.5CH2Cl2·2H2O), the ethanol monosolvate (BBR-DIC·C2H5OH or C20H18NO4+·C14H10Cl2NO2-·C2H5OH), the methanol monosolvate (BBR-DIC·CH3OH or C20H18NO4+·C14H10Cl2NO2-·CH3OH) and the methanol disolvate (BBR-DIC·2CH3OH or C20H18NO4+·C14H10Cl2NO2-·2CH3OH), and their crystal structures were determined. All five solvates of BBR-DIC (1:1 molar ratio) were crystallized from different organic solvents. Solvent molecules in a pharmaceutical salt are essential components for the formation of crystalline structures and stabilization of the crystal lattices. These solvates have strong intermolecular O...H hydrogen bonds between the DIC anions and solvent molecules. The intermolecular hydrogen-bond interactions were visualized by two-dimensional fingerprint plots. All the multicomponent solvates contained intramolecular N-H...O hydrogen bonds. Various π-π interactions dominate the packing structures of the solvates.
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Affiliation(s)
- Wei Sun
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People's Republic of China
| | - Limin Zuo
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People's Republic of China
| | - Ting Zhao
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People's Republic of China
| | - Zhiling Zhu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People's Republic of China
| | - Guangzhi Shan
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People's Republic of China
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155
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Lee MJ, Aitipamula S, Choi GJ, Chow PS. Agomelatine-hydroquinone (1:1) cocrystal: novel polymorphs and their thermodynamic relationship. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2019; 75:969-977. [PMID: 32830676 DOI: 10.1107/s2052520619011739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 08/25/2019] [Indexed: 06/11/2023]
Abstract
Polymorphism of active pharmaceutical ingredients (APIs) is of significance in the pharmaceutical industry because it can affect the quality, efficacy and safety of the final drug product. In this regard, polymorphic behavior of cocrystals is no exception because it can influence the development of cocrystals as potential drug formulations. The current contribution aims to introduce two novel polymorphs [forms (III) and (IV)] of agomelatine-hydroquinone (AGO-HYQ) cocrystal and to describe the thermodynamic relationship between the cocrystal polymorphs. All polymorphs were characterized using powder X-ray diffraction, differential scanning calorimetry, hot-stage microscopy and solubility measurements. In addition, the crystal structure of form (II), which has been previously solved from powder diffraction data [Prohens et al. (2016), Cryst. Growth Des. 16, 1063-1070] and form (III) were determined from the single-crystal X-ray diffraction data. Thermal analysis revealed that AGO-HYQ cocrystal form (III) exhibits a higher melting point and a lower heat of fusion than those of form (II). According to the heat of fusion rule, the polymorphs are enantiotropically related, with form (III) being stable at higher temperatures. Our results also show that the novel form (IV) is the most stable form at ambient conditions and it transforms into form (II) on heating, and therefore, the two polymorphs are enantiotropically related. Furthermore, solubility and van't Hoff plot results suggest that the transition points are approximately 339 K for the pair form (IV)-(II) and 352 K for the pair form (II)-(III).
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Affiliation(s)
- Min Jeong Lee
- Formulated Products, Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, 627833, Singapore
| | - Srinivasulu Aitipamula
- Formulated Products, Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, 627833, Singapore
| | - Guang J Choi
- Department of Pharmaceutical Engineering, Soonchunhyang University, Asan, Chungnam 31538, South Korea
| | - Pui Shan Chow
- Formulated Products, Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, 627833, Singapore
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156
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Bellas MK, Matzger AJ. Achieving Balanced Energetics through Cocrystallization. Angew Chem Int Ed Engl 2019; 58:17185-17188. [DOI: 10.1002/anie.201908709] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 09/20/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Michael K. Bellas
- Department of Chemistry University of Michigan 930 North University Avenue Ann Arbor MI 48109-1055 USA
| | - Adam J. Matzger
- Department of Chemistry University of Michigan 930 North University Avenue Ann Arbor MI 48109-1055 USA
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157
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158
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Chiral Cocrystal Solid Solutions, Molecular Complexes, and Salts of N-Triphenylacetyl-l-Tyrosine and Diamines. Int J Mol Sci 2019; 20:ijms20205004. [PMID: 31658607 PMCID: PMC6829379 DOI: 10.3390/ijms20205004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 10/06/2019] [Accepted: 10/08/2019] [Indexed: 12/27/2022] Open
Abstract
The molecular recognition process and the ability to form multicomponent supramolecular systems have been investigated for the amide of triphenylacetic acid and l-tyrosine (N-triphenylacetyl-l-tyrosine, TrCOTyr). The presence of several supramolecular synthons within the same amide molecule allows the formation of various multicomponent crystals, where TrCOTyr serves as a chiral host. Isostructural crystals of solvates with methanol and ethanol and a series of binary crystalline molecular complexes with selected organic diamines (1,5-naphthyridine, quinoxaline, 4,4′-bipyridyl, and DABCO) were obtained. The structures of the crystals were planned based on non-covalent interactions (O–H···N or N–H+···O− hydrogen bonds) present in a basic structural motif, which is a heterotrimeric building block consisting of two molecules of the host and one molecule of the guest. The complex of TrCOTyr with DABCO is an exception. The anionic dimers built off the TrCOTyr molecules form a supramolecular gutter, with trityl groups located on the edge and filled by DABCO cationic dimers. Whereas most of the racemic mixtures crystallize as racemic crystals or as conglomerates, the additional tests carried out for racemic N-triphenylacetyl-tyrosine (rac-TrCOTyr) showed that the compound crystallizes as a solid solution of enantiomers.
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159
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Xu Y, Fang T, Yang Y, Sun L, Shen Q. Preparation of Deoxycholate-Modified Docetaxel-Cimetidine Complex Chitosan Nanoparticles to Improve Oral Bioavailability. AAPS PharmSciTech 2019; 20:302. [PMID: 31489504 DOI: 10.1208/s12249-019-1520-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 08/23/2019] [Indexed: 11/30/2022] Open
Abstract
Docetaxel (DTX) was effective in the treatment of neoplasm but could only be administered intravenously with the poor oral bioavailability owing to its undesirable solubility, remarkably metabolic conversion, and other factors. Cimetidine (CMD), a classic CYP3A4 isozyme inhibitor, had exhibited a wide range of inhibition on the metabolism of many drugs. The aim of this study was to construct the novel docetaxel-cimetidine (DTX-CMD) complex and the chitosan-deoxycholate nanoparticles based on it to confirm whether this formulation could show advantages in terms of solubility, dissolution rate, small intestinal absorption, and oral bioavailability in comparison with the pure drug. The solid-state characterization was carried out by powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FT-IR), and simultaneous DSC-TGA (SDT). Dissolution rate and kinetic solubility study were determined by evaluating the amount of DTX in distilled water and phosphate buffer solution (pH = 7.4), respectively. And small intestinal absorption and pharmacokinetics study were conducted in rats. The results of this study demonstrated that we successfully constructed DTX-CMD complex and its chitosan-deoxycholate nanoparticles. Furthermore, the DTX-CMD complex increased the solubility of DTX by 2.3-fold and 2.1-fold in distilled water and phosphate buffer solution, respectively. The ultimate accumulative amount of DTX-CMD complex nanoparticles through rat small intestinal in 2 h was approximately 4.9-fold and the oral bioavailability of the novel nanoparticles was enhanced 2.8-fold, compared with the pure DTX. The superior properties of the complex nanoparticles could both improve oral bioavailability and provide much more feasibility for other formulations of DTX.
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160
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Ito M, Tokuda R, Suzuki H, Sakamoto T, Terada K, Noguchi S. Desolvation behavior of indinavir sulfate ethanol and follow-up by terahertz spectroscopy. Int J Pharm 2019; 567:118446. [PMID: 31220565 DOI: 10.1016/j.ijpharm.2019.06.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 05/29/2019] [Accepted: 06/16/2019] [Indexed: 10/26/2022]
Abstract
Active pharmaceutical ingredients are composed of single-component or multicomponent crystals. Multicomponent crystals include salts, co-crystals, and solvates. Indinavir sulfate is the ethanol solvate form of indinavir that is known to deliquesce through moisture absorption. However, the detailed behavior of solvent molecules in the crystal has not been investigated. In this study, we studied the desolvation mechanism of indinavir sulfate ethanol and investigated the behavior of solvent molecules in the solid from. Indinavir sulfate ethanol contained 1.7 molecules of ethanol, 0.7 of which desolvated at room temperature. They were originally two ethanol solvent molecules; one molecule of ethanol desolvated at room temperature, and the conformation of the remaining ethanol and t-butyl groups changed in conjunction with the removal of one ethanol molecule. Desolvation could hardly be detected by powder X-ray diffraction; however, it was detected using terahertz spectroscopy. Terahertz measurement of desolvation showed a high correlation with thermogravimetry data, suggesting that desolvation could be observed non-destructively using terahertz spectroscopy. We concluded that indinavir sulfate 1 ethanol deliquesced at 60% relative humidity, and it turned into an amorphous solid after drying.
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Affiliation(s)
- Masataka Ito
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan
| | - Reiko Tokuda
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan
| | - Hironori Suzuki
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan
| | - Tomoaki Sakamoto
- Division of Drugs, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa 210-9510, Japan
| | - Katsuhide Terada
- Faculty of Pharmacy, Takasaki University of Health and Welfare, 60, Nakaorui-machi, Takasaki, Gunma 370-0033, Japan
| | - Shuji Noguchi
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.
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161
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Advanced Lipid Technologies® (ALT®): A Proven Formulation Platform to Enhance the Bioavailability of Lipophilic Compounds. JOURNAL OF DRUG DELIVERY 2019; 2019:1957360. [PMID: 31360551 PMCID: PMC6644232 DOI: 10.1155/2019/1957360] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 05/20/2019] [Accepted: 06/25/2019] [Indexed: 02/08/2023]
Abstract
Despite recent advances, the drug development process continues to face significant challenges to efficiently improve the poor solubility of active pharmaceutical ingredients (API) in aqueous media or to improve the bioavailability of lipid-based formulations. The inherent high intra- and interindividual variability of absorption of oral lipophilic drug leads to inconsistent and unpredictable bioavailability and magnitude of the therapeutic effect. For this reason, the development of lipid-based drugs remains a challenging endeavour with a high risk of failure. Therefore, effective strategies to assure a predictable, consistent, and reproducible bioavailability and therapeutic effect for lipid-based medications are needed. Different solutions to address this problem have been broadly studied, including the approaches of particle size reduction, prodrugs, salt forms, cocrystals, solid amorphous forms, cyclodextrin clathrates, and lipid-based drug delivery systems such as self-emulsifying systems and liposomes. Here, we provide a brief description of the current strategies commonly employed to increase the bioavailability of lipophilic drugs and present Advanced Lipid Technologies® (ALT®), a combination of different surfactants that has been demonstrated to improve the absorption of omega-3 fatty acids under various physiological and pathological states.
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162
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Successful oral delivery of poorly water-soluble drugs both depends on the intraluminal behavior of drugs and of appropriate advanced drug delivery systems. Eur J Pharm Sci 2019; 137:104967. [PMID: 31252052 DOI: 10.1016/j.ejps.2019.104967] [Citation(s) in RCA: 179] [Impact Index Per Article: 35.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 05/27/2019] [Accepted: 06/21/2019] [Indexed: 12/11/2022]
Abstract
Poorly water-soluble drugs continue to be a problematic, yet important class of pharmaceutical compounds for treatment of a wide range of diseases. Their prevalence in discovery is still high, and their development is usually limited by our lack of a complete understanding of how the complex chemical, physiological and biochemical processes that occur between administration and absorption individually and together impact on bioavailability. This review defines the challenge presented by these drugs, outlines contemporary strategies to solve this challenge, and consequent in silico and in vitro evaluation of the delivery technologies for poorly water-soluble drugs. The next steps and unmet needs are proposed to present a roadmap for future studies for the field to consider enabling progress in delivery of poorly water-soluble compounds.
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163
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Effect of molecular weight of hypromellose on mucin diffusion and oral absorption behavior of fenofibrate nanocrystal. Int J Pharm 2019; 564:39-47. [DOI: 10.1016/j.ijpharm.2019.04.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 03/14/2019] [Accepted: 04/10/2019] [Indexed: 01/17/2023]
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164
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Devogelaer JJ, Meekes H, Vlieg E, de Gelder R. Cocrystals in the Cambridge Structural Database: a network approach. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS 2019; 75:371-383. [DOI: 10.1107/s2052520619004694] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 04/05/2019] [Indexed: 11/10/2022]
Abstract
To obtain a better understanding of which coformers to combine for the successful formation of a cocrystal, techniques from data mining and network science are used to analyze the data contained in the Cambridge Structural Database (CSD). A network of coformers is constructed based on cocrystal entries present in the CSD and its properties are analyzed. From this network, clusters of coformers with a similar tendency to form cocrystals are extracted. The popularity of the coformers in the CSD is unevenly distributed: a small group of coformers is responsible for most of the cocrystals, hence resulting in an inherently biased data set. The coformers in the network are found to behave primarily in a bipartite manner, demonstrating the importance of combining complementary coformers for successful cocrystallization. Based on our analysis, it is demonstrated that the CSD coformer network is a promising source of information for knowledge-based cocrystal prediction.
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165
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Sarabu S, Bandari S, Kallakunta VR, Tiwari R, Patil H, Repka MA. An update on the contribution of hot-melt extrusion technology to novel drug delivery in the twenty-first century: part II. Expert Opin Drug Deliv 2019; 16:567-582. [PMID: 31046479 DOI: 10.1080/17425247.2019.1614912] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
INTRODUCTION Interest in hot-melt extrusion (HME) technology for novel applications is growing day by day, which is evident from several hundred publications within the last 5 years. HME is a cost-effective, solvent free, 'green' technology utilized for various formulations with low investment costs compared to conventional technologies. HME has also earned the attention of the pharmaceutical industry by the transformation of this technology for application in continuous manufacturing. AREAS COVERED Part II of the review focuses on various novel opportunities or innovations of HME such as multiple component systems (co-crystals, co-amorphous systems and salts), twin-screw granulation, semi-solids, co-extrusion, abuse deterrent formulations, solid self-emulsifying drug delivery systems, chronotherapeutic drug delivery systems, and miscellaneous applications. EXPERT OPINION HME is being investigated as an alternative technology for preparation of multicomponent systems such as co-crystals and co-amorphous techniques. Twin-screw granulation has gained increased interest in preparation of granules via twin-screw melt granulation or twin-screw dry granulation. This novel application of the HME process provides a promising alternate approach in the formulation of granules and solid dosage forms. However, this technology may need to be further investigated for scalability aspects of these novel applications for industrial production.
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Affiliation(s)
- Sandeep Sarabu
- a Department of Pharmaceutics and Drug Delivery , The University of Mississippi, University , MS , USA
| | - Suresh Bandari
- a Department of Pharmaceutics and Drug Delivery , The University of Mississippi, University , MS , USA
| | - Venkata Raman Kallakunta
- a Department of Pharmaceutics and Drug Delivery , The University of Mississippi, University , MS , USA
| | - Roshan Tiwari
- a Department of Pharmaceutics and Drug Delivery , The University of Mississippi, University , MS , USA
| | - Hemlata Patil
- a Department of Pharmaceutics and Drug Delivery , The University of Mississippi, University , MS , USA
| | - Michael A Repka
- a Department of Pharmaceutics and Drug Delivery , The University of Mississippi, University , MS , USA.,b Pii Center for Pharmaceutical Technology , The University of Mississippi, University , MS , USA
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166
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Santiago de Oliveira Y, Saraiva Costa W, Ferreira Borges P, Silmara Alves de Santana M, Ayala AP. The design of novel metronidazole benzoate structures: exploring stoichiometric diversity. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2019; 75:483-495. [PMID: 31062703 DOI: 10.1107/s2053229619003838] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Accepted: 03/20/2019] [Indexed: 11/10/2022]
Abstract
The use of supramolecular synthons as a strategy to control crystalline structure is a crucial factor in developing new solid forms with physicochemical properties optimized by design. However, to achieve this objective, it is necessary to understand the intermolecular interactions in the context of crystal packing. The feasibility of a given synthon depends on its flexibility to combine the drug with a variety of coformers. In the present work, the imidazole-hydroxy synthon is investigated using as the target molecule benzoylmetronidazole [BZMD; systematic name 2-(2-methyl-5-nitro-1H-imidazol-1-yl)ethyl benzoate], whose imidazole group seems to be a suitable acceptor for hydrogen bonds. Thus, coformers with carboxylic acid and phenol groups were chosen. According to the availability of binding sites presented in the coformer, and considering the proposed synthon and hydrogen-bond complementarity as major factors, different drug-coformer stoichiometric ratios were explored (1:1, 2:1 and 3:1). Thirteen new solid forms (two salts and eleven cocrystals) were produced, namely BZMD-benzoic acid (1/1), C13H13N3O4·C7H6O2, BZMD-β-naphthol (1/1), C13H13N3O4·C10H8O, BZMD-4-methoxybenzoic acid (1/1), C13H13N3O4·C8H8O3, BZMD-3,5-dinitrobenzoic acid (1/1), C13H13N3O4·C7H4N2O6, BZMD-3-aminobenzoic acid (1/1), C13H13N3O4·C7H7NO2, BZMD-salicylic acid (1/1), C13H13N3O4·C7H6O3, BZMD-maleic acid (1/1) {as the salt 1-[2-(benzoyloxy)ethyl]-2-methyl-5-nitro-1H-imidazol-3-ium 3-carboxyprop-2-enoate}, C13H14N3O4+·C4H3O4-, BZMD-isophthalic acid (1/1), C13H13N3O4·C8H6O4, BZMD-resorcinol (2/1), 2C13H13N3O4·C6H6O2, BZMD-fumaric acid (2/1), C13H13N3O4·0.5C4H4O4, BZMD-malonic acid (2/1), 2C13H13N3O4·C3H2O4, BZMD-2,6-dihydroxybenzoic acid (1/1) {as the salt 1-[2-(benzoyloxy)ethyl]-2-methyl-5-nitro-1H-imidazol-3-ium 2,6-dihydroxybenzoate}, C13H14N3O4+·C7H5O4-, and BZMD-3,5-dihydroxybenzoic acid (3/1), 3C13H13N3O4·C7H6O4, and their crystalline structures elucidated, confirming the robustness of the selected synthon.
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167
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Bennett JW, Raglione ME, Oburn SM, MacGillivray LR, Arnold MA, Mason SE. DFT Computed Dielectric Response and THz Spectra of Organic Co-Crystals and Their Constituent Components. Molecules 2019; 24:molecules24050959. [PMID: 30857228 PMCID: PMC6429106 DOI: 10.3390/molecules24050959] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 02/26/2019] [Accepted: 03/04/2019] [Indexed: 11/26/2022] Open
Abstract
Terahertz (THz) spectroscopy has been put forth as a non-contact, analytical probe to characterize the intermolecular interactions of biologically active molecules, specifically as a way to understand, better develop, and use active pharmaceutical ingredients. An obstacle towards fully utilizing this technique as a probe is the need to couple features in the THz regions to specific vibrational modes and interactions. One solution is to use density functional theory (DFT) methods to assign specific vibrational modes to signals in the THz region, coupling atomistic insights to spectral features. Here, we use open source planewave DFT packages that employ ultrasoft pseudopotentials to assess the infrared (IR) response of organic compounds and complex co-crystal formulations in the solid state, with and without dispersion corrections. We compare our DFT computed lattice parameters and vibrational modes to experiment and comment on how to improve the agreement between theory and modeling to allow for THz spectroscopy to be used as an analytical probe in complex biologically relevant systems.
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Affiliation(s)
- Joseph W Bennett
- Department of Chemistry, University of Iowa, Iowa City, IA 52242, USA.
| | | | - Shalisa M Oburn
- Department of Chemistry, University of Iowa, Iowa City, IA 52242, USA.
| | | | - Mark A Arnold
- Department of Chemistry, University of Iowa, Iowa City, IA 52242, USA.
| | - Sara E Mason
- Department of Chemistry, University of Iowa, Iowa City, IA 52242, USA.
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168
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Kavanagh ON, Croker DM, Walker GM, Zaworotko MJ. Pharmaceutical cocrystals: from serendipity to design to application. Drug Discov Today 2019; 24:796-804. [DOI: 10.1016/j.drudis.2018.11.023] [Citation(s) in RCA: 146] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 11/15/2018] [Accepted: 11/28/2018] [Indexed: 01/06/2023]
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169
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Thakuria R, Arhangelskis M, Eddleston MD, Chow EHH, Sarmah KK, Aldous BJ, Krzyzaniak JF, Jones W. Cocrystal Dissociation under Controlled Humidity: A Case Study of Caffeine–Glutaric Acid Cocrystal Polymorphs. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.8b00422] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ranjit Thakuria
- Department of Chemistry, Gauhati University, Guwahati 781014, Assam, India
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Mihails Arhangelskis
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal H3A 0B8, Canada
| | - Mark D. Eddleston
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Ernest H. H. Chow
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | | | - Barry J. Aldous
- Antiva Biosciences, Inc., 6000 Shoreline Court, Suite 203, South San Francisco, California 94080, United States
| | - Joseph F. Krzyzaniak
- The Pfizer Institute for Pharmaceutical Materials Science, Pfizer, Groton, Connecticut 06340, United States
| | - William Jones
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
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170
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Gryl M, Kozieł M, Stadnicka KM. A proposal for coherent nomenclature of multicomponent crystals. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2019; 75:53-58. [PMID: 32830778 PMCID: PMC6457040 DOI: 10.1107/s2052520618015858] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 11/08/2018] [Indexed: 11/13/2022]
Abstract
Here a new, systematic, unambiguous and unified nomenclature for multicomponent materials is presented. The approach simplifies naming schemes of extraordinary co-crystals containing multiple building blocks with different charges. Although the presented examples of cytosine compounds cannot cover all possibilities, they clearly show that the new nomenclature is flexible and can be easily extended to other multicomponent materials.
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Affiliation(s)
- Marlena Gryl
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, Kraków, 30-387, Poland
| | - Marcin Kozieł
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, Kraków, 30-387, Poland
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171
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Li X, Yu G, Chen X, He L, Zhou Z, Ren Z. Investigating the solubilization effect of oxcarbazepine by forming cocrystals. CrystEngComm 2019. [DOI: 10.1039/c9ce00651f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oxcarbazepine (OXCBZ) is a poorly soluble drug that can't form a salt. The apparent solubilities of the OXCBZ–OA and OXCBZ–2,5-DHBA cocrystals increased approximately 2.6 and 4.7 times of that of OXCBZ.
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Affiliation(s)
- Xiangrong Li
- College of Chemical Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- People's Republic of China
| | - Guojia Yu
- College of Chemical Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- People's Republic of China
| | - Xinjian Chen
- College of Chemical Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- People's Republic of China
| | - Lichao He
- College of Chemical Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- People's Republic of China
| | - Zhiyong Zhou
- College of Chemical Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- People's Republic of China
| | - Zhongqi Ren
- College of Chemical Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- People's Republic of China
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172
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Carvalho PS, Diniz LF, Tenorio JC, Souza MS, Franco CHJ, Rial RC, Warszawski de Oliveira KR, Nazario CED, Ellena J. Pharmaceutical paroxetine-based organic salts of carboxylic acids with optimized properties: the identification and characterization of potential novel API solid forms. CrystEngComm 2019. [DOI: 10.1039/c8ce02076k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Reacting paroxetine HCl with oxalic, maleic, fumaric and l-tartaric acids results in the formation of novel molecular salts.
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Affiliation(s)
- Paulo S. Carvalho
- Instituto de Química
- Universidade Federal do Mato Grosso do Sul
- Campo Grande
- Brazil
| | - Luan F. Diniz
- Instituto de Física de São Carlos
- Universidade de São Paulo
- 13560-970 - São Carlos
- Brazil
| | - Juan C. Tenorio
- Instituto de Física de São Carlos
- Universidade de São Paulo
- 13560-970 - São Carlos
- Brazil
| | - Matheus S. Souza
- Instituto de Física de São Carlos
- Universidade de São Paulo
- 13560-970 - São Carlos
- Brazil
| | - Chris H. J. Franco
- Departamento de Química
- Universidade Federal de Juiz de Fora
- Juiz de Fora
- Brazil
| | - Rafael C. Rial
- Instituto de Química
- Universidade Federal do Mato Grosso do Sul
- Campo Grande
- Brazil
| | | | - Carlos E. D. Nazario
- Instituto de Química
- Universidade Federal do Mato Grosso do Sul
- Campo Grande
- Brazil
| | - Javier Ellena
- Instituto de Física de São Carlos
- Universidade de São Paulo
- 13560-970 - São Carlos
- Brazil
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173
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Liu R, Liu J, Yan X, Yuan C. A novel supramolecular architecture based on melamine and biphenyl-4,4-dicarboxylic acid: Synthesis, crystal structure and luminescent property. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.09.059] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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174
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Allu S, Suresh K, Bolla G, Mannava MKC, Nangia A. Role of hydrogen bonding in cocrystals and coamorphous solids: indapamide as a case study. CrystEngComm 2019. [DOI: 10.1039/c8ce01075g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Crystalline and amorphous stable binary compounds of indapamide for high solubility and permeability.
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Affiliation(s)
| | - Kuthuru Suresh
- School of Chemistry
- University of Hyderabad
- Hyderabad 500046
- India
- Technology Business Incubator
| | - Geetha Bolla
- School of Chemistry
- University of Hyderabad
- Hyderabad 500046
- India
| | | | - Ashwini Nangia
- School of Chemistry
- University of Hyderabad
- Hyderabad 500046
- India
- CSIR-National Chemical Laboratory
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175
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Corlett EK, Blade H, Hughes LP, Sidebottom PJ, Walker D, Walton RI, Brown SP. An XRD and NMR crystallographic investigation of the structure of 2,6-lutidinium hydrogen fumarate. CrystEngComm 2019. [DOI: 10.1039/c9ce00633h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A crystallographic study highlighting the benefits of a combined XRD and NMR approach in investigating both stability and variation within an organic multicomponent crystal.
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Affiliation(s)
| | - Helen Blade
- Pharmaceutical Development
- AstraZeneca
- Macclesfield
- UK
| | | | | | - David Walker
- Department of Physics
- University of Warwick
- Coventry
- UK
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176
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Barua H, Gunnam A, Yadav B, Nangia A, Shastri NR. An ab initio molecular dynamics method for cocrystal prediction: validation of the approach. CrystEngComm 2019. [DOI: 10.1039/c9ce01436e] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cocrystal formation prediction by ab initio molecular dynamics and validation based on the experimental results of 145 coformers for six drugs.
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Affiliation(s)
- Harsh Barua
- Solid State Pharmaceutical Research Group (SSPRG)
- Department of Pharmaceutics
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad 500037
- India
| | - Anilkumar Gunnam
- School of Chemistry
- University of Hyderabad
- Hyderabad 500 046
- India
| | - Balvant Yadav
- Solid State Pharmaceutical Research Group (SSPRG)
- Department of Pharmaceutics
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad 500037
- India
| | - Ashwini Nangia
- School of Chemistry
- University of Hyderabad
- Hyderabad 500 046
- India
| | - Nalini R. Shastri
- Solid State Pharmaceutical Research Group (SSPRG)
- Department of Pharmaceutics
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad 500037
- India
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177
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Devogelaer JJ, Brugman SJT, Meekes H, Tinnemans P, Vlieg E, de Gelder R. Cocrystal design by network-based link prediction. CrystEngComm 2019. [DOI: 10.1039/c9ce01110b] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Cocrystals are predicted using a network of coformers extracted from the CSD.
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Affiliation(s)
| | | | - Hugo Meekes
- Radboud University
- 6525AJ Nijmegen
- The Netherlands
| | | | - Elias Vlieg
- Radboud University
- 6525AJ Nijmegen
- The Netherlands
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178
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Takata N, Tanida S, Nakae S, Shiraki K, Tozuka Y, Ishigai M. Tofogliflozin Salt Cocrystals with Sodium Acetate and Potassium Acetate. Chem Pharm Bull (Tokyo) 2018; 66:1035-1040. [PMID: 30381655 DOI: 10.1248/cpb.c18-00483] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We investigated the salt cocrystals formed by tofogliflozin with sodium acetate and potassium acetate by determining the crystal structures of the salt cocrystals and characterizing the solid states. The salt cocrystal screening using the slurry method and the liquid-assisted grinding method resulted in the formation of tofogliflozin-sodium acetate 1 : 1 and tofogliflozin-potassium acetate 1 : 1 salt cocrystals. Single-crystal X-ray diffraction revealed that, although each salt cocrystal belongs to a different space group, both of the salt cocrystals have almost similar structural features, including the conformation of tofogliflozin molecules, the coordination to Na+/K+ ions, and hydrogen bonds. The salt cocrystals exhibited extreme hygroscopicity with deliquescence, which is also a property of sodium acetate and potassium acetate. In addition, tofogliflozin-potassium acetate salt cocrystal had two polymorphs, which were enantiotropically related.
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Affiliation(s)
| | | | | | - Koji Shiraki
- Research Division, Chugai Pharmaceutical Co., Ltd
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179
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Nechipadappu SK, Trivedi DR. Cocrystal of nutraceutical sinapic acid with Active Pharmaceutical Ingredients ethenzamide and 2-chloro-4-Nitrobenzoic acid: Equilibrium solubility and stability study. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.06.074] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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180
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Shaikh R, Singh R, Walker GM, Croker DM. Pharmaceutical Cocrystal Drug Products: An Outlook on Product Development. Trends Pharmacol Sci 2018; 39:1033-1048. [PMID: 30376967 DOI: 10.1016/j.tips.2018.10.006] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 10/04/2018] [Accepted: 10/04/2018] [Indexed: 01/30/2023]
Abstract
Active pharmaceutical ingredients (APIs) are most commonly formulated and delivered to patients in the solid state. Recently, an alternative API solid-state form, namely the pharmaceutical cocrystal, has witnessed increasing academic and industrial interest due to its potential to deliver bespoke physical properties in the pharmaceutical drug product. This interest has been supported by advances in cocrystal discovery, development, and approval, enabled primarily by a supportive new FDA guidance in February 2018. In this review, we describe the process of developing a pharmaceutical cocrystal drug product from screening to approval, with an emphasis on significant developments over the past decade.
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Affiliation(s)
- Rahamatullah Shaikh
- Department of Chemical Sciences, Bernal Institute, University of Limerick, Limerick, V94 T9PX, Ireland
| | - Ravendra Singh
- Engineering Research Center for Structured Organic Particulate Systems (C-SOPS), Department of Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Gavin M Walker
- Department of Chemical Sciences, Bernal Institute, University of Limerick, Limerick, V94 T9PX, Ireland; Synthesis and Solid State Pharmaceutical Centre (SSPC), Bernal Institute, University of Limerick, Limerick, V94 T9PX, Ireland
| | - Denise M Croker
- Department of Chemical Sciences, Bernal Institute, University of Limerick, Limerick, V94 T9PX, Ireland; Synthesis and Solid State Pharmaceutical Centre (SSPC), Bernal Institute, University of Limerick, Limerick, V94 T9PX, Ireland.
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181
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Sathisaran I, Dalvi SV. Engineering Cocrystals of PoorlyWater-Soluble Drugs to Enhance Dissolution in Aqueous Medium. Pharmaceutics 2018; 10:E108. [PMID: 30065221 PMCID: PMC6161265 DOI: 10.3390/pharmaceutics10030108] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 07/17/2018] [Accepted: 07/25/2018] [Indexed: 01/17/2023] Open
Abstract
Biopharmaceutics Classification System (BCS) Class II and IV drugs suffer from poor aqueous solubility and hence low bioavailability. Most of these drugs are hydrophobic and cannot be developed into a pharmaceutical formulation due to their poor aqueous solubility. One of the ways to enhance the aqueous solubility of poorlywater-soluble drugs is to use the principles of crystal engineering to formulate cocrystals of these molecules with water-soluble molecules (which are generally called coformers). Many researchers have shown that the cocrystals significantly enhance the aqueous solubility of poorly water-soluble drugs. In this review, we present a consolidated account of reports available in the literature related to the cocrystallization of poorly water-soluble drugs. The current practice to formulate new drug cocrystals with enhanced solubility involves a lot of empiricism. Therefore, in this work, attempts have been made to understand a general framework involved in successful (and unsuccessful) cocrystallization events which can yield different solid forms such as cocrystals, cocrystal polymorphs, cocrystal hydrates/solvates, salts, coamorphous solids, eutectics and solid solutions. The rationale behind screening suitable coformers for cocrystallization has been explained based on the rules of five i.e., hydrogen bonding, halogen bonding (and in general non-covalent bonding), length of carbon chain, molecular recognition points and coformer aqueous solubility. Different techniques to screen coformers for effective cocrystallization and methods to synthesize cocrystals have been discussed. Recent advances in technologies for continuous and solvent-free production of cocrystals have also been discussed. Furthermore, mechanisms involved in solubilization of these solid forms and the parameters influencing dissolution and stability of specific solid forms have been discussed. Overall, this review provides a consolidated account of the rationale for design of cocrystals, past efforts, recent developments and future perspectives for cocrystallization research which will be extremely useful for researchers working in pharmaceutical formulation development.
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Affiliation(s)
- Indumathi Sathisaran
- Department of Biological Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gujarat 382355, India.
| | - Sameer Vishvanath Dalvi
- Department of Chemical Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gujarat 382355, India.
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182
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Fontana F, Figueiredo P, Zhang P, Hirvonen JT, Liu D, Santos HA. Production of pure drug nanocrystals and nano co-crystals by confinement methods. Adv Drug Deliv Rev 2018; 131:3-21. [PMID: 29738786 DOI: 10.1016/j.addr.2018.05.002] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 05/01/2018] [Accepted: 05/03/2018] [Indexed: 11/26/2022]
Abstract
The use of drug nanocrystals in the drug formulation is increasing due to the large number of poorly water-soluble drug compounds synthetized and due to the advantages brought by the nanonization process. The downsizing processes are done using a top-down approach (milling and homogenization currently employed at the industrial level), while the crystallization process is performed by bottom-up techniques (e.g., antisolvent precipitation, use of supercritical fluids or spray and freeze drying). In addition, the production of nanocrystals in confined environment can be achieved within microfluidics channels. This review analyzes the processes for the preparation of nanocrystals and co-crystals, divided by top-down and bottom-up approaches, together with their combinations. The combination of both strategies merges the favorable features of each process and avoids the disadvantages of single processes. Overall, the applicability of drug nanocrystals is highlighted by the widespread research on the production processes at the engineering, pharmaceutical, and nanotechnology level.
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183
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Practical guidelines for the characterization and quality control of pure drug nanoparticles and nano-cocrystals in the pharmaceutical industry. Adv Drug Deliv Rev 2018; 131:101-115. [PMID: 29920294 DOI: 10.1016/j.addr.2018.06.009] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 06/08/2018] [Accepted: 06/11/2018] [Indexed: 12/14/2022]
Abstract
The number of poorly soluble drug candidates is increasing, and this is also seen in the research interest towards drug nanoparticles and (nano-)cocrystals; improved solubility is the most important application of these nanosystems. In order to confirm the functionality of these nanoparticles throughout their lifecycle, repeatability of the formulation processes, functional performance of the formed systems in pre-determined way and system stability, a thorough physicochemical understanding with the aid of necessary analytical techniques is needed. Even very minor deviations in for example particle size or size deviation in nanoscale can alter the product bioavailability, and the effect is even more dramatic with the smallest particle size fractions. Also, small particle size sets special requirements for the analytical techniques. In this review most important physicochemical properties of drug nanocrystals and nano-cocrystals are presented, suitable analytical techniques, their pros and cons, are described with the extra input on practical point of view.
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184
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Supercritical carbon dioxide-based technologies for the production of drug nanoparticles/nanocrystals - A comprehensive review. Adv Drug Deliv Rev 2018; 131:22-78. [PMID: 30026127 DOI: 10.1016/j.addr.2018.07.010] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 07/02/2018] [Accepted: 07/10/2018] [Indexed: 02/06/2023]
Abstract
Low drug bioavailability, which is mostly a result of poor aqueous drug solubilities and of inadequate drug dissolution rates, is one of the most significant challenges that pharmaceutical companies are currently facing, since this may limit the therapeutic efficacy of marketed drugs, or even result in the discard of potential highly effective drug candidates during developmental stages. Two of the main approaches that have been implemented in recent years to overcome poor drug solubility/dissolution issues have frequently involved drug particle size reduction (i.e., micronization/nanonization) and/or the modification of some of the physicochemical and structural properties of poorly water soluble drugs. A large number of particle engineering methodologies have been developed, tested, and applied in the synthesis and control of particle size/particle-size distributions, crystallinities, and polymorphic purities of drug micro- and nano-particles/crystals. In recent years pharmaceutical processing using supercritical fluids (SCF), in general, and supercritical carbon dioxide (scCO2), in particular, have attracted a great attention from the pharmaceutical industry. This is mostly due to the several well-known advantageous technical features of these processes, as well as to other increasingly important subjects for the pharmaceutical industry, namely their "green", sustainable, safe and "environmentally-friendly" intrinsic characteristics. In this work, it is presented a comprehensive state-of-the-art review on scCO2-based processes focused on the formation and on the control of the physicochemical, structural and morphological properties of amorphous/crystalline pure drug nanoparticles. It is presented and discussed the most relevant scCO2, scCO2-based fluids and drug physicochemical properties that are pertinent for the development of successful pharmaceutical products, namely those that are critical in the selection of an adequate scCO2-based method to produce pure drug nanoparticles/nanocrystals. scCO2-based nanoparticle formation methodologies are classified in three main families, and in terms of the most important role played by scCO2 in particle formation processes: as a solvent; as an antisolvent or a co-antisolvent; and as a "high mobility" additive (a solute, a co-solute, or a co-solvent). Specific particle formation methods belonging to each one of these families are presented, discussed and compared. Some selected amorphous/crystalline drug nanoparticles that were prepared by these methods are compiled and presented, namely those studied in the last 10-15 years. A special emphasis is given to the formation of drug cocrystals. It is also discussed the fundamental knowledge and the main mechanisms in which the scCO2-based particle formation methods rely on, as well as the current status and urgent needs in terms of reliable experimental data and of robust modeling approaches. Other addressed and discussed topics include the currently available and the most adequate physicochemical, morphological and biological characterization methods required for pure drug nanoparticles/nanocrystals, some of the current nanometrology and regulatory issues associated to the use of these methods, as well as some scale-up, post-processing and pharmaceutical regulatory subjects related to the industrial implementation of these scCO2-based processes. Finally, it is also discussed the current status of these techniques, as well as their future major perspectives and opportunities for industrial implementation in the upcoming years.
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185
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Sigfridsson K, Ahlqvist M, Lindsjö M, Paulsson S. Salt formation improved the properties of a candidate drug during early formulation development. Eur J Pharm Sci 2018; 120:162-171. [PMID: 29730322 DOI: 10.1016/j.ejps.2018.04.048] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 04/09/2018] [Accepted: 04/30/2018] [Indexed: 12/20/2022]
Abstract
The purpose of this study was to investigate if AZD5329, a dual neurokinin NK1/2 receptor antagonist, is a suitable candidate for further development as an oral immediate release (IR) solid dosage form as a final product. The neutral form of AZD5329 has only been isolated as amorphous material. In order to search for a solid material with improved physical and chemical stability and more suitable solid-state properties, a salt screen was performed. Crystalline material of a maleic acid salt and a fumaric acid salt of AZD5329 were obtained. X-ray powder diffractiometry, thermogravimetric analysis, differential scanning calorimetry and dynamic vapor sorption were used to investigate the physicochemical characteristics of the two salts. The fumarate salt of AZD5329 is anhydrous, the crystallization is reproducible and the hygroscopicity is acceptable. Early polymorphism assessment work using slurry technique did not reveal any better crystal modification or crystallinity for the fumarate salt. For the maleate salt, the form isolated originally was found to be a solvate, but an anhydrous form was found in later experiments; by suspension in water or acetone, by drying of the solvate to 100-120 °C or by subjecting the solvate form to conditions of 40 °C/75%RH for 3 months. The dissolution behavior and the chemical stability (in aqueous solutions, formulations and solid-state) of both salts were also studied and found to be satisfactory. The compound displays sensitivity to low pH, and the salt of the maleic acid, which is the stronger acid, shows more degradation during stability studies, in line with this observation. The presented data indicate that the substance fulfils basic requirements for further development of an IR dosage form, based on the characterization on crystalline salts of AZD5329.
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Affiliation(s)
- Kalle Sigfridsson
- Advanced Drug Delivery, Pharmaceutical Science, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden.
| | | | - Martin Lindsjö
- Pharmaceutical Technology & Development, AstraZeneca, Gothenburg, Sweden
| | - Stefan Paulsson
- Pharmaceutical Technology & Development, AstraZeneca, Gothenburg, Sweden
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186
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Herbrink M, Groenland SL, Huitema ADR, Schellens JHM, Beijnen JH, Steeghs N, Nuijen B. Solubility and bioavailability improvement of pazopanib hydrochloride. Int J Pharm 2018; 544:181-190. [PMID: 29680279 DOI: 10.1016/j.ijpharm.2018.04.037] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 03/26/2018] [Accepted: 04/18/2018] [Indexed: 01/09/2023]
Abstract
The anti-cancer drug pazopanib hydrochloride (PZH) has a very low aqueous solubility and a variable oral bioavailability. A new pharmaceutical formulation with an improved solubility may enhance the bioavailability and reduce the variability. A broad selection of polymer excipients was tested for their compatibility and solubilizing properties by conventional microscopic, thermal and spectrometric techniques. A wet milling and mixing technique was used to produce homogenous powder mixtures. The dissolution properties of the formulation were tested by a pH-switch dissolution model. The final formulation was tested in vivo in cancer patient following a dose escalation design. Of the tested mixture formulations, the one containing the co-block polymer Soluplus® in a 8:1 ratio with PZH performed best in terms of in vitro dissolution properties. The in vivo results indicated that 300 mg of the developed formulation yields similar exposure and a lower variability (379 μg/mL∗h (36.7% CV)) than previously reported values for the standard PZH formulation (Votrient®) at the approved dose of 800 mg. Furthermore, the expected plasma-Cthrough levels (27.2 μg/mL) exceeds the defined therapeutic efficacy threshold of 20 μg/mL.
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Affiliation(s)
- Maikel Herbrink
- Department of Pharmacy and Pharmacology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital and MC Slotervaart, Louwesweg 6, 1066 EC Amsterdam, The Netherlands; Division of Pharmacology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands.
| | - Stefanie L Groenland
- Department of Pharmacy and Pharmacology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital and MC Slotervaart, Louwesweg 6, 1066 EC Amsterdam, The Netherlands; Division of Pharmacology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | - Alwin D R Huitema
- Department of Pharmacy and Pharmacology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital and MC Slotervaart, Louwesweg 6, 1066 EC Amsterdam, The Netherlands; Department of Clinical Pharmacy, University Medical Center, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, Utrecht, The Netherlands
| | - Jan H M Schellens
- Division of Pharmacology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands; Department of Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands; Department of Medical Oncology and Clinical Pharmacology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | - Jos H Beijnen
- Department of Pharmacy and Pharmacology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital and MC Slotervaart, Louwesweg 6, 1066 EC Amsterdam, The Netherlands; Division of Pharmacology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands; Department of Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Neeltje Steeghs
- Department of Medical Oncology and Clinical Pharmacology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | - Bastiaan Nuijen
- Department of Pharmacy and Pharmacology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital and MC Slotervaart, Louwesweg 6, 1066 EC Amsterdam, The Netherlands
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187
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Raut MD, Giri L, Pedireddi VR. Supramolecular Assemblies of cis,cis,cis
-1,2,4,5-Cyclohexanetetracarboxylic Acid with Various Aza-Donors. ChemistrySelect 2018. [DOI: 10.1002/slct.201702990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Manish D. Raut
- Solid State and Supramolecular Structural Chemistry Laboratory; School of Basic Sciences; Indian Institute of Technology Bhubaneswar; Argul Bhubaneswar 752 050 India
| | - Lopamudra Giri
- Solid State and Supramolecular Structural Chemistry Laboratory; School of Basic Sciences; Indian Institute of Technology Bhubaneswar; Argul Bhubaneswar 752 050 India
| | - Venkateswara Rao Pedireddi
- Solid State and Supramolecular Structural Chemistry Laboratory; School of Basic Sciences; Indian Institute of Technology Bhubaneswar; Argul Bhubaneswar 752 050 India
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188
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Haser A, Cao T, Lubach JW, Zhang F. In Situ Salt Formation during Melt Extrusion for Improved Chemical Stability and Dissolution Performance of a Meloxicam–Copovidone Amorphous Solid Dispersion. Mol Pharm 2018; 15:1226-1237. [DOI: 10.1021/acs.molpharmaceut.7b01057] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Abbe Haser
- Division of Pharmaceutics, College of Pharmacy, The University of Texas at Austin, 2409 University Avenue, A1920, Austin, Texas 78712, United States
| | - Tu Cao
- Division of Pharmaceutics, College of Pharmacy, The University of Texas at Austin, 2409 University Avenue, A1920, Austin, Texas 78712, United States
| | - Joseph W. Lubach
- Genentech, 1 DNA Way, South San Francisco, California 94080, United States
| | - Feng Zhang
- Division of Pharmaceutics, College of Pharmacy, The University of Texas at Austin, 2409 University Avenue, A1920, Austin, Texas 78712, United States
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189
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Losev E, Boldyreva E. The effect of amino acid backbone length on molecular packing: crystalline tartrates of glycine, β-alanine, γ-aminobutyric acid (GABA) and DL-α-aminobutyric acid (AABA). ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2018; 74:177-185. [PMID: 29400333 DOI: 10.1107/s2053229617017909] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 12/14/2017] [Indexed: 12/20/2022]
Abstract
We report a novel 1:1 cocrystal of β-alanine with DL-tartaric acid, C3H7NO2·C4H6O6, (II), and three new molecular salts of DL-tartaric acid with β-alanine {3-azaniumylpropanoic acid-3-azaniumylpropanoate DL-tartaric acid-DL-tartrate, [H(C3H7NO2)2]+·[H(C4H5O6)2]-, (III)}, γ-aminobutyric acid [3-carboxypropanaminium DL-tartrate, C4H10NO2+·C4H5O6-, (IV)] and DL-α-aminobutyric acid {DL-2-azaniumylbutanoic acid-DL-2-azaniumylbutanoate DL-tartaric acid-DL-tartrate, [H(C4H9NO2)2]+·[H(C4H5O6)2]-, (V)}. The crystal structures of binary crystals of DL-tartaric acid with glycine, (I), β-alanine, (II) and (III), GABA, (IV), and DL-AABA, (V), have similar molecular packing and crystallographic motifs. The shortest amino acid (i.e. glycine) forms a cocrystal, (I), with DL-tartaric acid, whereas the larger amino acids form molecular salts, viz. (IV) and (V). β-Alanine is the only amino acid capable of forming both a cocrystal [i.e. (II)] and a molecular salt [i.e. (III)] with DL-tartaric acid. The cocrystals of glycine and β-alanine with DL-tartaric acid, i.e. (I) and (II), respectively, contain chains of amino acid zwitterions, similar to the structure of pure glycine. In the structures of the molecular salts of amino acids, the amino acid cations form isolated dimers [of β-alanine in (III), GABA in (IV) and DL-AABA in (V)], which are linked by strong O-H...O hydrogen bonds. Moreover, the three crystal structures comprise different types of dimeric cations, i.e. (A...A)+ in (III) and (V), and A+...A+ in (IV). Molecular salts (IV) and (V) are the first examples of molecular salts of GABA and DL-AABA that contain dimers of amino acid cations. The geometry of each investigated amino acid (except DL-AABA) correlates with the melting point of its mixed crystal.
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Affiliation(s)
- Evgeniy Losev
- Group of Reactivity of Solids, Institute of Solid State Chemistry and Mechanochemistry SB RAS, Kutateladze 18 str., Novosibirsk 630128, Russian Federation
| | - Elena Boldyreva
- Group of Reactivity of Solids, Institute of Solid State Chemistry and Mechanochemistry SB RAS, Kutateladze 18 str., Novosibirsk 630128, Russian Federation
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190
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Dai XL, Chen JM, Lu TB. Pharmaceutical cocrystallization: an effective approach to modulate the physicochemical properties of solid-state drugs. CrystEngComm 2018. [DOI: 10.1039/c8ce00707a] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This highlight presents an update on applications of cocrystallization to modify properties relevant to efficacy, safety, and manufacturability of drugs.
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Affiliation(s)
- Xia-Lin Dai
- School of Pharmaceutical Sciences
- Sun Yat-Sen University
- Guangzhou 510006
- China
| | - Jia-Mei Chen
- School of Chemistry and Chemical Engineering
- Tianjin University of Technology
- Tianjin 300384
- China
- School of Pharmaceutical Sciences
| | - Tong-Bu Lu
- Institute for New Energy Materials and Low Carbon Technologies
- Tianjin University of Technology
- Tianjin 300384
- China
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191
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Surov AO, Voronin AP, Vener MV, Churakov AV, Perlovich GL. Specific features of supramolecular organisation and hydrogen bonding in proline cocrystals: a case study of fenamates and diclofenac. CrystEngComm 2018. [DOI: 10.1039/c8ce01458b] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New zwitterionic cocrystals of fenamate drugs and diclofenac with the naturally occurring amino acid l-proline have been obtained and thoroughly characterised by a variety of experimental and theoretical techniques.
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Affiliation(s)
- Artem O. Surov
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences
- 153045 Ivanovo
- Russia
| | - Alexander P. Voronin
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences
- 153045 Ivanovo
- Russia
| | | | - Andrei V. Churakov
- N.S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
- Moscow
- Russia
| | - German L. Perlovich
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences
- 153045 Ivanovo
- Russia
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192
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Steed JW. 21st century developments in the understanding and control of molecular solids. Chem Commun (Camb) 2018; 54:13175-13182. [DOI: 10.1039/c8cc08277d] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This highlight article surveys some of the key recent advances in crystallization techniques, polymorphism, co-crystals, amorphous materials and crystal engineering.
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Affiliation(s)
- Jonathan W. Steed
- Department of Chemistry
- Durham University
- University Science Laboratories
- Durham
- UK
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193
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Lombard J, Loots L, le Roex T, Haynes DA. Formation of multi-component crystals with a series of pyridinium-carboxyacrylate zwitterions. CrystEngComm 2018. [DOI: 10.1039/c7ce01953j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Analysis of the extensive hydrogen-bonding networks in the melaminium salts of a series of organic zwitterions gives insight into why so few multicomponent crystals were observed.
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Affiliation(s)
- Jean Lombard
- Department of Chemistry and Polymer Science
- Stellenbosch University
- Matieland
- Republic of South Africa
| | - Leigh Loots
- Department of Chemistry and Polymer Science
- Stellenbosch University
- Matieland
- Republic of South Africa
| | - Tanya le Roex
- Department of Chemistry and Polymer Science
- Stellenbosch University
- Matieland
- Republic of South Africa
| | - Delia A. Haynes
- Department of Chemistry and Polymer Science
- Stellenbosch University
- Matieland
- Republic of South Africa
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194
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Surov AO, Churakov AV, Proshin AN, Dai XL, Lu T, Perlovich GL. Cocrystals of a 1,2,4-thiadiazole-based potent neuroprotector with gallic acid: solubility, thermodynamic stability relationships and formation pathways. Phys Chem Chem Phys 2018; 20:14469-14481. [DOI: 10.1039/c8cp02532k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The thermodynamic stability relationships and the formation pathways of the cocrystals of 1,2,4-thiadiazole-based neuroprotector with gallic acid were investigated.
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Affiliation(s)
- Artem O. Surov
- Institution of the Russian Academy of Sciences
- G.A. Krestov Institute of Solution Chemistry RAS
- 153045 Ivanovo
- Russia
| | - Andrei V. Churakov
- N.S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
- Moscow
- Russia
| | - Alexey N. Proshin
- Institute of Physiologically Active Compounds of the Russian Academy of Sciences
- Chernogolovka
- Russia
| | - Xia-Lin Dai
- School of Pharmaceutical Sciences
- Sun Yat-Sen University
- Guangzhou
- China
| | - Tongbu Lu
- Institute for New Energy Materials and Low Carbon Technologies
- Tianjin University of Technology
- Tianjin
- China
| | - German L. Perlovich
- Institution of the Russian Academy of Sciences
- G.A. Krestov Institute of Solution Chemistry RAS
- 153045 Ivanovo
- Russia
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195
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Corner PA, Berry DJ, McCabe JF, Barbas R, Prohens R, Du H, Zhou H, Llinas A. Property prediction and pharmacokinetic evaluation of mixed stoichiometry cocrystals of zafirlukast, a drug delivery case study. CrystEngComm 2018. [DOI: 10.1039/c7ce02059g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cocrystals have been identified as a method for ensuring the delivery of poorly soluble drugs.
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Affiliation(s)
| | | | | | - Rafael Barbas
- Centres Científics i Tecnològics
- Universitat de Barcelona
- Spain
| | - Rafel Prohens
- Centres Científics i Tecnològics
- Universitat de Barcelona
- Spain
| | | | | | - Antonio Llinas
- Respiratory, Inflammation, Autoimmunity IMED Biotech Unit
- AstraZeneca
- Gothenburg
- Sweden
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196
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Sterically encumbered 2,6-dibenzhydryl-4-methylphenyl derived ligand systems: synthesis and structures. J CHEM SCI 2017. [DOI: 10.1007/s12039-017-1353-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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197
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Zhang Y, Zhang D, Zhang Y, Liu L, Zhang X, Zhang L, Zhang Y, Chang L, Fan Q, Zhang Y, Xi J, Zhang Q. Improving solubility and avoiding hygroscopicity of tetrahydroberberine by forming hydrochloride salts by introducing solvents: [HTHB]Cl, [HTHB]Cl·CH3OH and [HTHB]Cl·CH3COOH. NEW J CHEM 2017. [DOI: 10.1039/c7nj02423a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Improving the solubility of tetrahydroberberine by forming hydrochloride salts and avoiding the hygroscopicity.
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Affiliation(s)
- Yunan Zhang
- College of Pharmacy
- Jiamusi University
- Jiamusi
- China
| | - Dajun Zhang
- College of Pharmacy
- Jiamusi University
- Jiamusi
- China
| | - Yu Zhang
- College of Pharmacy
- Jiamusi University
- Jiamusi
- China
| | - Lixin Liu
- College of Pharmacy
- Jiamusi University
- Jiamusi
- China
| | - Xuesong Zhang
- First Affiliated Hospital
- Jiamusi University
- Jiamusi
- China
| | - Lei Zhang
- College of Pharmacy
- Jiamusi University
- Jiamusi
- China
| | - Yunjie Zhang
- College of Pharmacy
- Jiamusi University
- Jiamusi
- China
| | - Liang Chang
- College of Pharmacy
- Jiamusi University
- Jiamusi
- China
| | | | | | - Jiaming Xi
- College of Pharmacy
- Jiamusi University
- Jiamusi
- China
| | - Qiang Zhang
- School of Public Health
- Jiamusi University
- Jiamusi
- China
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198
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Ding XH, Ou CJ, Wang S, Xie LH, Lin JY, Wang JP, Huang W. Co-crystallization of 1,3,5-trifluoro-2,4,6-triiodobenzene (1,3,5-TFTIB) with a variety of Lewis bases through halogen-bonding interactions. CrystEngComm 2017. [DOI: 10.1039/c7ce01284e] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Co-crystallization of 1,3,5-trifluoro-2,4,6-triiodobenzene (1,3,5-TFTIB) with a variety of halogen-bonding acceptors.
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Affiliation(s)
- Xue-Hua Ding
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech University (NanjingTech)
- Nanjing 211816
- China
| | - Chang-Jin Ou
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech University (NanjingTech)
- Nanjing 211816
- China
| | - Shi Wang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM)
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)
- Nanjing University of Posts & Telecommunications (NUPT)
- Nanjing 210023
- China
| | - Ling-Hai Xie
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM)
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)
- Nanjing University of Posts & Telecommunications (NUPT)
- Nanjing 210023
- China
| | - Jin-Yi Lin
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech University (NanjingTech)
- Nanjing 211816
- China
| | - Jian-Pu Wang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech University (NanjingTech)
- Nanjing 211816
- China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech University (NanjingTech)
- Nanjing 211816
- China
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199
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Perrin A, Goodwin MJ, Musa OM, Yufit DS, Steed JW. Boric acid co-crystals in guar gelation. CrystEngComm 2017. [DOI: 10.1039/c7ce01858d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Boric acid/lactam co-crystals have been applied as novel delivery agents for guar cross-linking.
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Affiliation(s)
- Andrea Perrin
- Department of Chemistry
- Durham University
- Durham DH1 3LE
- UK
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