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Samie A, Alavian H. A Perspective on the Permeability of Cocrystals/Organic Salts of Oral Drugs. Mol Pharm 2024; 21:4860-4911. [PMID: 39284012 DOI: 10.1021/acs.molpharmaceut.4c00786] [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] [Indexed: 10/08/2024]
Abstract
According to the BCS classification system, the differentiation of drugs is based on two essential parameters of solubility and permeability, meaning the latter is as pivotal as the former in creating marketable pharmaceutical products. Nevertheless, the indispensable role of permeability in pharmaceutical cocrystal profiles has not been sufficiently cherished, which can be most probably attributed to two principal reasons. First, responsibility may be on more user-friendly in vitro measurement procedures for solubility compared to permeability, implying the permeability measurement process seems unexpectedly difficult for researchers, whereas they have a complete understanding of solubility concepts and experiments. Besides, it may be ascribed to the undeniable attraction of introducing new crystal-based structures which mostly leaves the importance of improving the function of existing multicomponents behind. Bringing in new crystalline entities, to rephrase it, researchers have a fairly better chance of achieving high-class publications. Although the Food and Drug Administration (FDA) has provided a golden opportunity for pharmaceutical cocrystals to straightforwardly enter the market by simply considering them as derivatives of the existing active pharmaceutical ingredients, inattention to assessing and scaling up permeability which is intimately linked with solubility has resulted in limited numbers of them in the global pharmaceutical market. Casting a glance at the future, it is apprehended that further development in the field of permeability of pharmaceutical cocrystals and organic salts requires a meticulous perception of achievements to date and potentials to come. Thence, this perspective scrutinizes the pathway of permeation assessment making researchers confront their fear upfront through mapping the simplest way of permeability measurement for multicomponents of oral drugs.
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Affiliation(s)
- Ali Samie
- Department of Medicinal Chemistry, School of Pharmacy and Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad 9177948954, Iran
| | - Hoda Alavian
- Department of Medicinal Chemistry, School of Pharmacy and Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad 9177948954, Iran
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2
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Wang P, Li Y, Han W, Yan Y, Zhang C, Qu Q, Zhang X, Liu L, Sun X, Yang X, He M. The supramolecular synthon behavior within cocrystals of pyrazinamide and alkyl dicarboxylic acids: A perspective from terahertz spectroscopy and quantum chemical calculation. Talanta 2024; 278:126489. [PMID: 38959667 DOI: 10.1016/j.talanta.2024.126489] [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: 03/06/2024] [Revised: 06/26/2024] [Accepted: 06/28/2024] [Indexed: 07/05/2024]
Abstract
Pyrazinamide (PZA) is a widely-used anti-tuberculosis pharmaceutical, but its poor solubility prompts us to optimize pharmaceutical performance. Cocrystallization is a promising technique to improve physiochemical properties of active pharmaceutical ingredient (API) by connecting it with cocrystal former (CCF) via intermolecular interactions. Even though a series of alkyl dicarboxylic acids are employed to form cocrystal structures, systematic understanding on the role of intermolecular interactions is still missing. Therefore, terahertz (THz) spectroscopy and quantum chemical calculation are combined to elucidate the behavior of ubiquitous supramolecular synthons, such as hetero-synthons of acid-pyrazine, acid-amide and homo-synthon of amide-amide, from energy's view. Potential energy is calculated to differentiate the stability within polymorphs of PZA-MA cocrystal and free energy is evaluated to compare the solubility of PZA-CCF cocrystals respectively. With regard to vibrational energy, THz spectral fingerprints are theoretically assigned to specific vibrations and attributed to the flexibility deformation of supramolecular synthons based on oscillation theory, where stretching and twisting modes dominate the collective vibrational behavior. It provides a promising tool to evaluate cocrystal performance from its driving force and insightful guidance to discover new pharmaceutical cocrystals.
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Affiliation(s)
- Pengfei Wang
- School of Electrical and Information Engineering, Zhengzhou University, Zhengzhou 450001, China; Henan Key Laboratory of Laser and Opto-electric Information Technology, Zhengzhou University, Zhengzhou 450001, China; Sichuan Innovation Research Institute of Tianjin University, Chengdu 610000, China; State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China
| | - Ying Li
- School of Electrical and Information Engineering, Zhengzhou University, Zhengzhou 450001, China; Henan Key Laboratory of Laser and Opto-electric Information Technology, Zhengzhou University, Zhengzhou 450001, China
| | - Weifang Han
- School of Electrical and Information Engineering, Zhengzhou University, Zhengzhou 450001, China; Henan Key Laboratory of Laser and Opto-electric Information Technology, Zhengzhou University, Zhengzhou 450001, China
| | - Yuyue Yan
- Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
| | - Chunyi Zhang
- Department of Rheumatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450001, China
| | - Qiuhong Qu
- Sichuan Innovation Research Institute of Tianjin University, Chengdu 610000, China
| | - Xu Zhang
- School of Electrical and Information Engineering, Zhengzhou University, Zhengzhou 450001, China; Henan Key Laboratory of Laser and Opto-electric Information Technology, Zhengzhou University, Zhengzhou 450001, China
| | - Liyuan Liu
- Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
| | - Xiaohong Sun
- School of Electrical and Information Engineering, Zhengzhou University, Zhengzhou 450001, China; Henan Key Laboratory of Laser and Opto-electric Information Technology, Zhengzhou University, Zhengzhou 450001, China
| | - Xiaonan Yang
- School of Electrical and Information Engineering, Zhengzhou University, Zhengzhou 450001, China.
| | - Mingxia He
- Sichuan Innovation Research Institute of Tianjin University, Chengdu 610000, China; State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China
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3
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Awad HA, Fetouh MI, Sultan AA, El Maghraby GM. Combined eutexia and amorphization for simultaneous enhancement of dissolution rate of triamterene and hydrochlorothiazide: preparation of orodispersible tablets. Drug Dev Ind Pharm 2024; 50:306-319. [PMID: 38400841 DOI: 10.1080/03639045.2024.2323996] [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: 10/14/2023] [Accepted: 02/22/2024] [Indexed: 02/26/2024]
Abstract
BACKGROUND Triamterene is an oral antihypertensive drug with dissolution-limited poor bioavailability. It can be used as monotherapy or in fixed dose combination with hydrochlorothiazide which also suffers from poor dissolution. Moreover, co-processing of drugs in fixed dose combination can alter their properties. Accordingly, pre-formulation studies should investigate the effect of co-processing and optimize the dissolution of drugs before and after fixed dose combination. This is expected to avoid deleterious interaction (if any) and to hasten the biopharmaceutical properties. OBJECTIVE Accordingly, the aim of this work was to optimize the dissolution rate of triamterene alone and after fixed dose combination with hydrochlorothiazide. METHODOLOGY Triamterene was subjected to dry co-grinding with xylitol, HPMC-E5 or their combination. The effect of co-grinding with hydrochlorothiazide was also tested in absence and presence of xylitol and HPMC-E5. The products were assessed using Fourier-transform infrared (FTIR), differential scanning calorimetry, X-ray powder diffraction (XRPD), in addition to dissolution studies. Optimum formulations were fabricated as oral disintegrating tablets (ODT).Results: Co-processing of triamterene with xylitol formed eutectic system which hastened dissolution rate. HPMC-E5 resulted in partial amorphization and improved triamterene dissolution. Co-grinding with both materials combined their effects. Co-processing of triamterene with hydrochlorothiazide resulted in eutexia but the product was slowly dissolving due to aggregation. This problem was vanished in presence of HPMC-E5 and xylitol. Compression of the optimum formulation into ODT underwent fast disintegration and liberated acceptable amounts of both drugs. CONCLUSION The study introduced simple co-processing with traditional excipients for development of ODT of triamterene and hydrochlorothiazide.
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Affiliation(s)
- Hend A Awad
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Egyptian Russian University, Badr city, Egypt
| | - Mohamed I Fetouh
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Egyptian Russian University, Badr city, Egypt
| | - Amal A Sultan
- Department of Pharmaceutics, College of Pharmacy, University of Hafr Al-Batin, Hafr Al-Batin, Saudi Arabia
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Gamal M El Maghraby
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Tanta University, Tanta, Egypt
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4
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Hareendran C, Alsirawan B, Paradkar A, Ajithkumar TG. In Situ Monitoring of Competitive Coformer Exchange Reaction by 1H MAS Solid-State NMR. Mol Pharm 2024; 21:1479-1489. [PMID: 38373877 DOI: 10.1021/acs.molpharmaceut.3c01118] [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] [Indexed: 02/21/2024]
Abstract
In a competitive coformer exchange reaction, a recent topic of interest in pharmaceutical research, the coformer in a pharmaceutical cocrystal is exchanged with another coformer that is expected to form a cocrystal that is more stable. There will be a competition between coformers to form the most stable product through the formation of hydrogen bonds. This will cause destabilization of the pharmaceutical products during processing or storage. Therefore, it is important to develop a mechanistic understanding of this transformation by monitoring each and every step of the reaction, employing a technique such as 1H nuclear magnetic resonance (NMR). In this study, an in situ monitoring of a coformer exchange reaction is carried out by 1H magic angle spinning (MAS) solid-state NMR (SSNMR) at a spinning frequency of 60 kHz. The changes in caffeine maleic acid cocrystals on addition of glutaric acid and caffeine glutaric cocrystals on addition of maleic acid were monitored. In all of the reactions, it has been observed that caffeine glutaric acid Form I is formed. When glutaric acid was added to 2:1 caffeine maleic acid, the formation of metastable 1:1 caffeine glutaric acid Form I was observed at the start of the experiment, indicating that the centrifugal pressure is enough for the formation. The difference in the end product of the reactions with a similar reaction pathway of 1:1 and 2:1 reactant stoichiometry indicates that a complete replacement of maleic acid has occurred only in the 1:1 stoichiometry of the reactants. The polymorphic transition of caffeine glutaric acid Form II to Form I at higher temperatures was a crucial reason that triggered the exchange of glutaric acid with maleic acid in the reaction of caffeine glutaric acid and maleic acid. Our results are novel since the new reaction pathways in competitive coformer exchange reactions enabled understanding the remarkable role of stoichiometry, polymorphism, temperature, and centrifugal pressure.
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Affiliation(s)
- Chaithanya Hareendran
- Central NMR Facility, and Physical/Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Bashir Alsirawan
- Centre for Pharmaceutical Engineering Science, School of Pharmacy and Medical Sciences, University of Bradford, Bradford BD7 1DP, United Kingdom
| | - Anant Paradkar
- Centre for Pharmaceutical Engineering Science, School of Pharmacy and Medical Sciences, University of Bradford, Bradford BD7 1DP, United Kingdom
| | - T G Ajithkumar
- Central NMR Facility, and Physical/Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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5
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Hareendran C, Shaligram PS, Gonnade R, Ajithkumar TG. A solid-state NMR method for characterization of pharmaceutical eutectics. Phys Chem Chem Phys 2024; 26:3800-3803. [PMID: 38240042 DOI: 10.1039/d3cp05615e] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Pharmaceutical eutectics are extremely useful for designing formulations, and currently, there are no techniques other than differential scanning calorimetry (DSC) that can confirm their formation. In this study, we demonstrate that 1H fast magic angle spinning (MAS) solid-state NMR (SSNMR) experiments can confirm the formation of eutectics by detecting their intermolecular hydrogen bonding interactions.
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Affiliation(s)
- Chaithanya Hareendran
- Central NMR facility and Physical/Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Parth S Shaligram
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Physical/Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Rajesh Gonnade
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Physical/Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - T G Ajithkumar
- Central NMR facility and Physical/Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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6
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Paskeh MDA, Babaei N, Hashemi M, Doosti A, Hushmandi K, Entezari M, Samarghandian S. The protective impact of curcumin, vitamin D and E along with manganese oxide and Iron (III) oxide nanoparticles in rats with scrotal hyperthermia: Role of apoptotic genes, miRNA and circRNA. J Trace Elem Med Biol 2024; 81:127320. [PMID: 37913559 DOI: 10.1016/j.jtemb.2023.127320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 06/08/2023] [Accepted: 10/13/2023] [Indexed: 11/03/2023]
Abstract
BACKGROUND Infertility is one of the major factors affecting most people around the world. Short-term exposure to high temperatures can cause hyperthermia, which is one of the causes of male infertility. The aim of this study was to investigate the protective effect of curcumin, vitamins D and E along with Iron (III) oxide nanoparticles (Fe2O3-NPs) and manganese oxide nanoparticles (MnO2-NPs) on semen parameters and its effect on miRNA21 and circRNA0001518 expression. MATERIAL AND METHODS In this study, the lower part of the rat was exposed to 43 °C for 5 weeks every other day for 5 weeks. Then the animals were killed. Tissue samples were collected for sperm parameters analysis, and tissue samples were taken for evaluation of apoptosis levels in germ cells, and RNA extraction in order to examine the expression of Bax, Bcl-2, miRNA, and CircRNA genes. RESULTS The results of this study showed that administration of curcumin, vitamin D, and vitamin E with Fe2O3-NPs and MnO2-NPs can improve the parameters of semen, Bax gene expression, Bcl-2 as well as miRNA and CircRNA in rats with testicular hyperthermia. In addition, curcumin by reducing the toxicity of Fe2O3 nanoparticles was able to reduce its negative effects and also reduce apoptosis in germ cells. This decrease in apoptosis was attributed to decreased Bcl-2 gene expression and increased expression of Bax, miRNA-21, and circRNA0001518. CONCLUSION All the results of this study confirmed that Fe2O3-NPs and Mno2-NPs containing antioxidants or vitamins are useful in improving fertility in rats due to scrotal hyperthermia. Although Fe2O3-NPs and Mno2-NPs containing both antioxidants and vitamins had a greater effect on improving fertility and reducing the toxic effects of nanoparticles.
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Affiliation(s)
| | - Nahid Babaei
- Department of Cell Biology and Genetics, Bushehr Branch, Islamic Azad University, Bushehr, Iran
| | - Mehrdad Hashemi
- Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical sciences, Islamic Azad University, Tehran, Iran; Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Abbas Doosti
- Biotechnology Research Center, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
| | - Kiavash Hushmandi
- Department of Food Hygiene and Quality Control, Division of Epidemiology, Faculty of Veterinary Medicine, University of Tehran, Tehran 1417466191, Iran.
| | - Maliheh Entezari
- Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical sciences, Islamic Azad University, Tehran, Iran; Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Saeed Samarghandian
- Healthy Ageing Research Centre, Neyshabur University of Medical Sciences, Neyshabur, Iran.
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7
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Marei HF, El Maghraby GM, Arafa MF. Eutectic phase transition during tablet manufacture: effect of melting point of eutectic forming drug. Pharm Dev Technol 2023; 28:811-825. [PMID: 37788184 DOI: 10.1080/10837450.2023.2264917] [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: 05/29/2023] [Accepted: 09/26/2023] [Indexed: 10/05/2023]
Abstract
The aim was to investigate eutectic transition during tableting and storage. Mixtures of lidocaine and series of NSAIDs with increasing melting point were used as model systems to guide formulators to scaleup eutectic forming materials gaining enhanced dissolution while avoiding deleterious physical changes. Physical mixtures of NSAIDs with lidocaine were prepared at eutectic forming ratio. These were directly compressed, dry co-ground before compression, or compressed after wet granulation. Dissolution of tablets was compared to corresponding dry co-ground mixture. Thermograms of direct compressed tablet were compared to co-ground mixture and pure compound. Stability of direct compressed tablets was assessed. Tableting initiated eutexia which enhanced dissolution of NSAIDs. Eutexia was associated with tablet softening in case of low melting point ketoprofen and aceclofenac. Wet granulation hastened eutexia developing unacceptable tablet in case ketoprofen and aceclofenac. Tablets prepared by direct compression of physical mixtures underwent gradual eutectic transition upon storage with the magnitude of eutectic transition reducing with increased melting point of NSAIDs. Ketoprofen was physically unstable but aceclofenac degraded chemically as well. Tenoxicam and meloxicam tablets were physically and chemically stable. Direct compression after physical mixing is the best tableting technique, but low melting point drugs should consider different strategy before compression.
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Affiliation(s)
- Hadir F Marei
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Tanta, Tanta, Egypt
| | - Gamal M El Maghraby
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Tanta, Tanta, Egypt
| | - Mona F Arafa
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Tanta, Tanta, Egypt
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8
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Madanayake SN, Manipura A, Thakuria R, Adassooriya NM. Opportunities and Challenges in Mechanochemical Cocrystallization toward Scaled-Up Pharmaceutical Manufacturing. Org Process Res Dev 2023. [DOI: 10.1021/acs.oprd.2c00314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Affiliation(s)
- Sithmi Nimashi Madanayake
- Department of Chemical and Process Engineering, Faculty of Engineering, University of Peradeniya, Peradeniya 20400, Sri Lanka
| | - Aruna Manipura
- Department of Chemical and Process Engineering, Faculty of Engineering, University of Peradeniya, Peradeniya 20400, Sri Lanka
| | - Ranjit Thakuria
- Department of Chemistry, Gauhati University, Guwahati 781014, Assam, India
| | - Nadeesh M. Adassooriya
- Department of Chemical and Process Engineering, Faculty of Engineering, University of Peradeniya, Peradeniya 20400, Sri Lanka
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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9
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Lozano JD, Velasquez-Diaz S, Galindo-Leon L, Sanchez C, Jiménez E, Macías MA. Co-crystals of pyrazinamide (PZA) with terephthalic (TPH) and trimesic (TMS) acids: Structural insights and dissolution study. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Jiang CJ, Xia YF, Xie YS. The crystal structure of the cocrystal 4-hydroxy-3,5-dimethoxybenzoic acid–pyrazine-2-carboxamide(1/1), C 14H 15N 3O 6. Z KRIST-NEW CRYST ST 2022. [DOI: 10.1515/ncrs-2022-0288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C14H15N3O6, monoclinic, C2/c (no. 15), a = 30.1620(13) Å, b = 3.8559(2) Å, c = 27.3897(13) Å, β = 117.610(4)°, V = 2822.7(3) Å3, Z = 8, Rgt
(F) = 0.0332, wRref
(F
2) = 0.0904, T = 170 K.
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Affiliation(s)
- Cheng-Jun Jiang
- School of Biological and Chemical Engineering , Zhejiang University of Science and Technology , Hangzhou , Liuhe Road 318# , China
| | - Ying-Fan Xia
- School of Biological and Chemical Engineering , Zhejiang University of Science and Technology , Hangzhou , Liuhe Road 318# , China
| | - Yan-Song Xie
- Shanghai Pharma Resources (Shanghai) Co., Ltd. , Building A, Building 9, No. 528, Ruiqing Road, Heqing Town, Pudong New District , Shanghai , China
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Bolla G, Sarma B, Nangia AK. Crystal Engineering of Pharmaceutical Cocrystals in the Discovery and Development of Improved Drugs. Chem Rev 2022; 122:11514-11603. [PMID: 35642550 DOI: 10.1021/acs.chemrev.1c00987] [Citation(s) in RCA: 95] [Impact Index Per Article: 47.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The subject of crystal engineering started in the 1970s with the study of topochemical reactions in the solid state. A broad chemical definition of crystal engineering was published in 1989, and the supramolecular synthon concept was proposed in 1995 followed by heterosynthons and their potential applications for the design of pharmaceutical cocrystals in 2004. This review traces the development of supramolecular synthons as robust and recurring hydrogen bond patterns for the design and construction of supramolecular architectures, notably, pharmaceutical cocrystals beginning in the early 2000s to the present time. The ability of a cocrystal between an active pharmaceutical ingredient (API) and a pharmaceutically acceptable coformer to systematically tune the physicochemical properties of a drug (i.e., solubility, permeability, hydration, color, compaction, tableting, bioavailability) without changing its molecular structure is the hallmark of the pharmaceutical cocrystals platform, as a bridge between drug discovery and pharmaceutical development. With the design of cocrystals via heterosynthons and prototype case studies to improve drug solubility in place (2000-2015), the period between 2015 to the present time has witnessed the launch of several salt-cocrystal drugs with improved efficacy and high bioavailability. This review on the design, synthesis, and applications of pharmaceutical cocrystals to afford improved drug products and drug substances will interest researchers in crystal engineering, supramolecular chemistry, medicinal chemistry, process development, and pharmaceutical and materials sciences. The scale-up of drug cocrystals and salts using continuous manufacturing technologies provides high-value pharmaceuticals with economic and environmental benefits.
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Affiliation(s)
- Geetha Bolla
- Department of Chemistry, Ben-Gurion University of the Negev, Building 43, Room 201, Sderot Ben-Gurion 1, Be'er Sheva 8410501, Israel
| | - Bipul Sarma
- Department of Chemical Sciences, Tezpur University, Napaam, Tezpur, Assam 784028, India
| | - Ashwini K Nangia
- School of Chemistry, University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Hyderabad 500046, India
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DUTT B, CHOUDHARY M, BUDHWAR V. A Brief Discussion of Multi-Component Organic Solids: Key Emphasis on Co-Crystallization. Turk J Pharm Sci 2022; 19:220-231. [DOI: 10.4274/tjps.galenos.2020.78700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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13
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Anand A, Sindogi K, Dixit SR, Shetty RP, Pujar GV, Kulkarni MV, Guru Row TN. Comparative Investigation on the Crystal Structures, Hirshfeld Surface Analysis, Antitubercular Assays, and Molecular Docking of Regioisomeric 1,2,3‐Triazoles. ChemistrySelect 2022. [DOI: 10.1002/slct.202104352] [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)
- Ashish Anand
- Solid State and Structural Chemistry Unit Indian Institute of Science Bengaluru 560012, Karnataka India
| | - Kishorkumar Sindogi
- Solid State and Structural Chemistry Unit Indian Institute of Science Bengaluru 560012, Karnataka India
| | - Sheshagiri R. Dixit
- Department of Pharmaceutical Chemistry JSS College of Pharmacy JSS Academy of Higher Education and Research Mysuru 570015, Karnataka India
| | - Richa P. Shetty
- Department of Pharmaceutical Chemistry JSS College of Pharmacy JSS Academy of Higher Education and Research Mysuru 570015, Karnataka India
| | - Gurubasavaraj V. Pujar
- Department of Pharmaceutical Chemistry JSS College of Pharmacy JSS Academy of Higher Education and Research Mysuru 570015, Karnataka India
| | - Manohar V. Kulkarni
- Department of Studies in Chemistry Karnatak University Pavate Nagar, Dharwad 580003, Karnataka India
| | - Tayur N. Guru Row
- Solid State and Structural Chemistry Unit Indian Institute of Science Bengaluru 560012, Karnataka India
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Chaudhary S, Rai R, Sahoo K, Kumar M. Forecast of Phase Diagram for the Synthesis of a Complex for the Detection of Cr 6+ Ions. ACS OMEGA 2022; 7:7460-7471. [PMID: 35284757 PMCID: PMC8908510 DOI: 10.1021/acsomega.1c04282] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 12/28/2021] [Indexed: 06/14/2023]
Abstract
A new organic complex (ANNBA) was synthesized using the solvent-free, solid-state reaction involving anthranilamide (AN)-m-nitrobenzoic acid (NBA). The established phase diagram specifies the formation of a complex in a 1:1 stoichiometric ratio which melts congruently at 142 °C. The diagram also infers the formation of two eutectics, E1 and E2, on either side of the complex with their respective melting at 118 and 106 °C. The stability and novelty of the synthesized complex was confirmed by differential scanning calorimetry, powder X-ray diffraction, and spectroscopic FTIR, 1H, and 13C NMR studies. The significant thermodynamic parameters such as the heat of mixing, the entropy of fusion, the roughness parameter, the interfacial energy, and excess thermodynamic functions have been studied. The novel complex (ANNBA) material displayed intense fluorescent emission as compared to the parent and the other well-known fluorescent organic material "pyrene." The influence of solvent's polarity on the absorption and emission of the complex has been studied in different solvents. Herein, we have displayed remarkable affinity of the complex toward hexavalent chromium ions in water, affecting its fluorescent property. We have deployed the synthesized complex as a turn-off fluorescent sensor to detect the most hazardous hexavalent chromium ions in water for the first time.
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Affiliation(s)
- Sumit Chaudhary
- Department
of Chemistry, Institute of Science, Banaras
Hindu University, Varanasi 221005, India
| | - Ramanand Rai
- Department
of Chemistry, Institute of Science, Banaras
Hindu University, Varanasi 221005, India
| | - Kedar Sahoo
- Department
of Chemical Engineering, IIT BHU, Varanasi 221005, India
| | - Manoj Kumar
- Department
of Chemical Engineering, IIT BHU, Varanasi 221005, India
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15
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Molecular salts of the isoniazid derivatives. Expanding the scope of sulfonate-pyridinium synthon to design materials. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2021.122762] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Yang X, Zhu J, Chen Z, Chen B, Jin S, Liu B, Wang D. Seven cocrystals of pyrazinamide and organic acids by H-bonds and some noncovalent associations. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131770] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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17
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Zhang J, Liang Z, Yang F, JI S, Lan P, Liao YX. Unique sandwich structure of pyrazinamide-methylmalonic acid cocrystal:ternary phase diagrams, characterization and property evaluation. CrystEngComm 2022. [DOI: 10.1039/d1ce01609a] [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
The Pyrazinamide (PZA)-Methylmalonic acid (MMA) cocrystal was prepared and characterized by powder X-ray diffraction (PXRD), differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FT-IR), and Thermogravimetric analysis (TGA). Hirshfeld surface...
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18
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Gas anti-solvent coprecipitation of pyrazinamide–PVP composite particles from mixed organic solvents using supercritical CO2: Effect of process parameters. J Supercrit Fluids 2021. [DOI: 10.1016/j.supflu.2021.105386] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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19
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Crystal structure of five solid forms from isonicotinamide and carboxylic acids assembled by classical hydrogen bonds and other noncovalent interactions. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130048] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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20
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Haneef J, Ali S, Chadha R. Emerging Multi-Drug Eutectics: Opportunities and Challenges. AAPS PharmSciTech 2021; 22:66. [PMID: 33554308 DOI: 10.1208/s12249-021-01939-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 01/15/2021] [Indexed: 11/30/2022] Open
Abstract
Complexity and heterogeneous nature of most diseases have posed greater challenges in the modern healthcare system. Fixed-dose combination can offer an ideal way to improve patient compliance and higher therapeutic efficacy. However, biopharmaceutical issues associated with the drug combinations remain unaddressed. Multidrug eutectics (MDE) have demonstrated significant promise in improving the biopharmaceutical attributes with synergistic therapeutic action. Eutectic mixtures are the multicomponent solid forms that possess lesser melting point than the individual components at a fixed composition. Non-covalent linking of drug combinations as MDE is an innovative strategy with enhanced solubility, dissolution, and mechanical and potential therapeutic efficacy. This review provides a comprehensive overview of the design of MDE, rational selection of drugs, characterization tools, and their therapeutic potential. Besides, the futuristic perspective where MDE could make a significant impact on combination therapy is briefly outlined. Graphical Abstract.
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Ho LY, Xiang ZS, Gopal R, Khan SA. Microfluidics-enabled particle engineering of monodisperse solid lipid microparticles with uniform drug loading and diverse solid-state outcomes. Int J Pharm 2021; 596:120230. [PMID: 33484918 DOI: 10.1016/j.ijpharm.2021.120230] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 11/23/2020] [Accepted: 12/19/2020] [Indexed: 11/19/2022]
Abstract
Lipids serve as excellent excipients for drug products. Solid lipid microparticles (SLMs) are relatively underexplored in drug delivery; these particles are conventionally prepared using processes yielding polydisperse size distributions, such as spray congealing or emulsification. In this paper, we demonstrate a microfluidics-enabled process for particle engineering of monodisperse solid lipid microparticles with size and content uniformity. To overcome low solubility, we use a volatile solvent to increase drug loading, making the drug-lipid solution a single phase, enabling identical drug loading across particles. We use microfluidic flow extrusion of the solution to generate uniform drug-loaded SLMs, substantially enhancing monodispersity. This method generalises across three drugs-ibuprofen, 5-methyl-2-[(2-nitrophenyl)amino]-3-thiophenecarbonitrile (ROY), and naproxen, and two lipids-beeswax and hard fat (Suppocire NAI 25A), forming particles of various solid states: amorphous naproxen in crystalline lipids, crystalline ROY in crystalline lipids, and a eutectic mixture of ibuprofen-hard fat. In vitro dissolution studies on the ibuprofen-hard fat SLMs reveal gradual release, fitting the Higuchi model with 50-65% drug released over 72 h. This work expands the drug particle engineering toolbox to enable the formulation of SLMs with high precision in particle size and drug loading. Moreover, the diverse solid-state outcomes enabled by our method makes it applicable to various drugs having different formulation requirements (crystalline/amorphous).
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Affiliation(s)
- Leon Yoon Ho
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576, Singapore
| | - Zi Shun Xiang
- Matralix Pte Ltd, 71 Ayer Rajah Crescent, #07-05, Singapore 139951, Singapore
| | - Renuga Gopal
- Matralix Pte Ltd, 71 Ayer Rajah Crescent, #07-05, Singapore 139951, Singapore
| | - Saif A Khan
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576, Singapore.
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22
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Sathisaran I, Dalvi SV. Investigating Cocrystallization of Carbamazepine with Structurally Compatible Coformers: New Cocrystal and Eutectic Phases with Enhanced Dissolution. AAPS PharmSciTech 2021; 22:29. [PMID: 33404968 DOI: 10.1208/s12249-020-01888-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Accepted: 11/23/2020] [Indexed: 11/30/2022] Open
Abstract
In this work, carbamazepine (CBZ), an anticonvulsant drug was cocrystallized with several structurally complement coformers (coformers with amide, acid and hydrazide functional groups) to enhance its dissolution. CBZ formed a cocrystal phase with acetamide (ACE) when mixtures of CBZ and ACE (containing CBZ mole fractions, XCBZ of 0.25, 0.33, 0.5, and 0.67) were subjected to solid-state grinding (SSG), evaporative crystallization (EC), slurry conversion (SC), and slow cooling crystallization (SLC). Upon heating, the CBZ-ACE cocrystal phase formed from CBZ-ACE mixtures containing XCBZ of 0.25, 0.33 and 0.67 underwent solid-state phase transition to CBZ form I and CBZ cocrytsal phase obtained from the CBZ-ACE mixture containing XCBZ of 0.5 converted to CBZ form III. Interestingly, slow cooling cocrystallization experiments resulted in crystallization of a cocrystal as well as the CBZ dihydrate forms. The powder dissolution studies demonstrated that among the different CBZ-ACE-SSG cocrystal phases, CBZ-ACE-SSG-XCBZ-0.33 cocrystal exhibited 7.47 times improved dissolution whereas the CBZ eutectic phase with nicotinic acid hydrazide (NAH) exhibited 4.93 times increased dissolution when compared to raw CBZ.
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23
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Ngilirabanga JB, Aucamp M, Pires Rosa P, Samsodien H. Mechanochemical Synthesis and Physicochemical Characterization of Isoniazid and Pyrazinamide Co-crystals With Glutaric Acid. Front Chem 2020; 8:595908. [PMID: 33282840 PMCID: PMC7706006 DOI: 10.3389/fchem.2020.595908] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 10/12/2020] [Indexed: 11/15/2022] Open
Abstract
The present work reports two novel pharmaceutical co-crystals; 2:1 isoniazid-glutaric acid (INHGA) and 2:1 pyrazinamide-glutaric acid (PGA). Isoniazid and pyrazinamide are key first-line drugs used for the treatment of tuberculosis. The co-crystals were produced via solid-state and solvent assisted grinding methods. Thermal characteristics of the samples were obtained using the differential scanning calorimetry, hot stage microscopy, and thermogravimetric analyses. The morphology of the powder samples by scanning electron microscopy, structural analysis by Fourier transform infrared spectroscopy and powder X-rays diffraction ensured co-crystal formation. Thermal analyses confirmed the co-crystals with new melting transitions ranging between their respective starting materials. Unique morphologies of the co-crystal particles were clear in SEM micrographs. The formation of intermolecular interactions with the co-crystal former was confirmed by the FT-IR spectral band shifting and was supported by distinct PXRD patterns of co-crystals thereby authenticating the successful co-crystal formation. In vitro solubility evaluation of the synthesized co-crystals by HPLC suggested a remarkable increase in solubility of both INH and PZA in their respective co-crystals.
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Affiliation(s)
| | - Marique Aucamp
- School of Pharmacy, University of the Western Cape, Cape Town, South Africa
| | - Paulo Pires Rosa
- Faculty of Pharmaceutical Sciences, State University of Campinas, Saö Paulo, Brazil
| | - Halima Samsodien
- School of Pharmacy, University of the Western Cape, Cape Town, South Africa
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24
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Batisai E. Multicomponent crystals of anti-tuberculosis drugs: a mini-review. RSC Adv 2020; 10:37134-37141. [PMID: 35521272 PMCID: PMC9057164 DOI: 10.1039/d0ra06478e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Accepted: 09/29/2020] [Indexed: 01/30/2023] Open
Abstract
Tuberculosis (TB) is the leading cause of death from a single infectious agent globally. Some of the early research on TB treatment indicated drug resistance as one of the key challenges in fighting this disease. The discovery that administering two or more drugs simultaneously could lead to much more effective treatment, with reduced drug resistance and shorter periods of chemotherapy, was, therefore, a very significant breakthrough in TB drug research. Pursuant to this discovery, the World Health Organisation (WHO) recommended TB treatment employing fixed-dose combinations (FDCs) containing first line anti-TB drugs; rifampicin, isoniazid, pyrazinamide, streptomycin and ethambutol. Regardless, certain challenges associated with FDCs remain and these include chemical instability and reduced bioavailability of rifampicin. Therefore, some research effort has been directed towards finding ways to deal with these challenges. One such effort involves the use of pharmaceutical co-crystals of the active pharmaceutical ingredients. Consequently, several pharmaceutical co-crystals of isoniazid and pyrazinamide have been reported. This paper aims at reviewing the multicomponent crystal structures of two first-line anti-TB drugs; isoniazid and pyrazinamide. The review will first set out a brief history of the disease, milestones in TB chemotherapy and the challenges associated with current treatment regimens. This will then be followed by a brief introduction to pharmaceutical co-crystals and how they can improve the physical and chemical properties of the active pharmaceutical ingredients. Secondly, multicomponent crystals of the two active pharmaceutical ingredients will be analysed by manual inspection for common supramolecular synthons between the drug molecules as well as between drug molecules and co-formers. Lastly; stability, solubility and dissolution experiments carried out on the pharmaceutical co-crystals of pyrazinamide and isoniazid will be analysed to gain insights into progress made with regards to improving stability and solubility of the active pharmaceutical ingredients.
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Affiliation(s)
- Eustina Batisai
- Department of Chemistry, University of Venda P. Bag X5050 Thohoyandou 0920 South Africa
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25
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Curcumin-Loaded Iron Particle Improvement of Spermatogenesis in Azoospermic Mouse Induced by Long-Term Scrotal Hyperthermia. Reprod Sci 2020; 28:371-380. [DOI: 10.1007/s43032-020-00288-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 08/02/2020] [Indexed: 11/26/2022]
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26
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Bazzo GC, Pezzini BR, Stulzer HK. Eutectic mixtures as an approach to enhance solubility, dissolution rate and oral bioavailability of poorly water-soluble drugs. Int J Pharm 2020; 588:119741. [PMID: 32783978 DOI: 10.1016/j.ijpharm.2020.119741] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 08/03/2020] [Accepted: 08/06/2020] [Indexed: 02/07/2023]
Abstract
Eutectic mixtures have been known for a long time in the pharmaceutical field. However, its potential as a system to improve the solubility and dissolution of poorly water-soluble drugs remains little explored. Studies involving the microstructural characterization and the preparation of solid dosage forms containing eutectic mixtures are also an issue to be developed. Recently, the number of studies involving the preparation of eutectic mixtures to improve the solubility and oral bioavailability of poorly soluble drugs has increased considerably, including drug-carrier and drug-drug mixtures. In this review is discussed the potential of eutectic mixtures as an alternative pharmaceutical solid system to enhance drugs solubility, dissolution rate or oral bioavailability. Different aspects like history, physico-chemical, microstructural properties, preparation methods, mechanisms involved in solubility/dissolution enhancement, techniques for solid state characterization, in vivo studies, advantages, limitations and formulation perspective are also discussed.
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Affiliation(s)
- Giovana Carolina Bazzo
- Innovation Study Center in Pharmaceutical Technologies - NITfar, Programa de Pós-Graduação em Farmácia, Universidade Federal de Santa Catarina, Campus Trindade, 88040-970 Florianópolis, SC, Brazil
| | - Bianca Ramos Pezzini
- Innovation Study Center in Pharmaceutical Technologies - NITfar, Programa de Pós-Graduação em Farmácia, Universidade Federal de Santa Catarina, Campus Trindade, 88040-970 Florianópolis, SC, Brazil
| | - Hellen Karine Stulzer
- Innovation Study Center in Pharmaceutical Technologies - NITfar, Programa de Pós-Graduação em Farmácia, Universidade Federal de Santa Catarina, Campus Trindade, 88040-970 Florianópolis, SC, Brazil.
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27
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Patel RD, Raval MK, Sheth NR. Formation of Diacerein − fumaric acid eutectic as a multi-component system for the functionality enhancement. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101562] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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28
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Zhang Z, Wang Q, Xue J, Du Y, Liu J, Hong Z. Vibrational Spectroscopic Investigation into Novel Ternary Eutectic Formed between Pyrazinamide, Fumaric Acid, and Isoniazid. ACS OMEGA 2020; 5:17266-17274. [PMID: 32715212 PMCID: PMC7376892 DOI: 10.1021/acsomega.0c01486] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 06/22/2020] [Indexed: 06/11/2023]
Abstract
To improve the efficacy of anti-tuberculosis (anti-TB) therapy, drug-drug co-crystallization stands for an alternative approach to settle the tuberculosis problem. Directly co-crystallizing two typical parent anti-TB drugs (pyrazinamide, PZA and isoniazid, INH) into a single binary co-crystal could not be obtained successfully. Multicomponent eutectic are highly effective and useful for enhancing the dissolution rate, bioavailability, and physical stability of the poorly water-soluble active pharmaceutical ingredient (API) drugs, when the attempts of forming a binary co-crystal have failed. Therefore, the ternary eutectic composition conception was proposed in this study, in which fumaric acid (FA) was chosen as the molecule to connect two first-line anti-tubercular drugs. First of all, three starting materials (including PZA, INH, and FA) were grinded at a 1:1:1 molar ratio, the eutectic composition was investigated through vibrational spectroscopic techniques, including terahertz time-domain spectroscopy (THz-TDS) and Raman spectroscopy. Additionally, the density functional theory (DFT) was utilized to simulate the optimized structures and vibrational modes of two possible theoretical eutectic composition forms. The THz absorption spectrum of the theoretical form I shows much more consistency with the experimental results than that of form II. Raman spectra also help to characterize the differences in vibrational modes between the eutectic composition and the starting parent compounds. The results provide us with both structural information and intermolecular hydrogen bonding interactions within specific multicomponent eutectic composition formulations based on Raman and terahertz vibrational spectroscopic techniques in combination with theoretical calculations.
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Affiliation(s)
- Ziming Zhang
- Centre
for THz Research, China Jiliang University, Hangzhou 310018, Zhejiang, China
| | - Qiqi Wang
- Centre
for THz Research, China Jiliang University, Hangzhou 310018, Zhejiang, China
| | - Jiadan Xue
- Department
of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, Zhejiang, China
| | - Yong Du
- Centre
for THz Research, China Jiliang University, Hangzhou 310018, Zhejiang, China
| | - Jianjun Liu
- Centre
for THz Research, China Jiliang University, Hangzhou 310018, Zhejiang, China
| | - Zhi Hong
- Centre
for THz Research, China Jiliang University, Hangzhou 310018, Zhejiang, China
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29
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Li K, Gbabode G, Barrio M, Tamarit JL, Vergé-Depré M, Robert B, Rietveld IB. The phase relationship between the pyrazinamide polymorphs α and γ. Int J Pharm 2020; 580:119230. [DOI: 10.1016/j.ijpharm.2020.119230] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 03/10/2020] [Accepted: 03/13/2020] [Indexed: 10/24/2022]
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30
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Sathisaran I, Dalvi SV. Cocrystallization of carbamazepine with amides: Cocrystal and eutectic phases with improved dissolution. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.05.054] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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31
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Bala M, Gautam MK, Chadha R. What if Cocrystallization Fails for Neutral Molecules? Screening Offered Eutectics as Alternate Pharmaceutical Materials: Leflunomide-a Case Study. PHARMACEUTICAL SCIENCES 2019. [DOI: 10.15171/ps.2019.46] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Background: The manuscript is aimed to optimize the biopharmaceutical parameters of a poorly soluble, neutral anti-rheumatic drug ‘leflunomide’ by preparing its non-covalent derivatives (NCDs). For this various monocarboxylic acids- (adipic acid, picolinic acid) and dicarboxylic acids (maleic acid, malonic acid, sorbic acid), as well as pyridine carboxamide derivatives (nicotinamide, isonicotinamide), are used as coformers. Methods: The novel solid forms were rationally prepared and systematically characterized. Further, these solid forms were subjected to equilibrium solubility and intrinsic dissolution rate (IDR) analysis in three aqueous media (pH 1.2, pH 4.5 and pH 6.8). In vivo plasma studies in male Wistar rats were done to assess the effect on area under the curve (AUC) and the maximum concentration (Cmax) of leflunomide in prepared solid forms. Results: These NCD were primarily characterized to be eutectics rather than cocrystals as expected. The stoichiometry was established by phase diagrams. The negative value of heat of mixing indicated them to be of cluster type. In addition, leflunomide in eutectics showed approximately 9 folds increase in solubility up to 4 hours. Besides this, approximately 4 folds enhancement in the in IDR was also observed. Maximum increase in bioavailability indicated by enhanced values of AUC and Cmax (490.29 μg h-1 mL-1 and 31.42 μg mL-1, respectively) for leflunomide-maleic acid eutectic in comparison to pure LEF (AUC: 193.20 μg h-1 mL-1 and Cmax: 12.09 μg mL-1). Conclusion: The unsuccessful cocrystallization experiments were found be the latent eutectics. The evaluation of these novel eutectics of poorly soluble drug exhibited possibility to further amplify the scope of accessible material phase options other than pure active pharmaceutical ingredient (API) without disturbing the structural integrity.
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Affiliation(s)
- Madhu Bala
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh-160014, India
| | - Manoj Kumar Gautam
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh-160014, India
| | - Renu Chadha
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh-160014, India
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32
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Chen W, Chen X, Yi S. Kinetic Study on the Preparation of Fumaric Acid from Maleic Acid by Batch Noncatalytic Isomerization. ACS OMEGA 2019; 4:8274-8281. [PMID: 31172038 PMCID: PMC6545549 DOI: 10.1021/acsomega.9b00316] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Accepted: 04/30/2019] [Indexed: 06/09/2023]
Abstract
In recent years, the increase in demand for fumaric acid from industry has resulted in an increased need for a high-selectivity process for the conversion of maleic acid to fumaric acid. A highly selective conversion of fumaric acid was achieved without a catalyst by a simple one-step hydrothermal reaction. In addition, the competitive conversion of maleic acid, fumaric acid, and malic acid was first systematically investigated in detail without using a catalyst. The products were characterized by X-ray diffraction and Fourier transform infrared, which demonstrated that the product was fumaric acid. The highly selective conversion of fumaric acid was achieved, and the yield of fumaric acid could reach 92%. Furthermore, a reaction kinetic model was put forward to study the competitive transformation process. The kinetic model predictions were found to agree well with the experimental data. The kinetic parameters were used to explain the changes in the content of every substance at different reaction temperatures and reaction times. In addition, the initial maleic acid concentration in the reaction was also considered as an influencing factor. These results can facilitate the conditional control and product control of industrial processes for the production of fumaric acid or malic acid using latter without a catalyst.
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Affiliation(s)
- Wangmi Chen
- College
of Marine and Environmental Sciences and College of Chemical Engineering
and Materials Science, Tianjin University
of Science and Technology, Tianjin 300457, China
| | - Xiaoting Chen
- College
of Marine and Environmental Sciences and College of Chemical Engineering
and Materials Science, Tianjin University
of Science and Technology, Tianjin 300457, China
| | - Shouzhi Yi
- College
of Marine and Environmental Sciences and College of Chemical Engineering
and Materials Science, Tianjin University
of Science and Technology, Tianjin 300457, China
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33
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Alshaikh RA, Essa EA, El Maghraby GM. Eutexia for enhanced dissolution rate and anti-inflammatory activity of nonsteroidal anti-inflammatory agents: Caffeine as a melting point modulator. Int J Pharm 2019; 563:395-405. [DOI: 10.1016/j.ijpharm.2019.04.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 04/06/2019] [Accepted: 04/08/2019] [Indexed: 01/23/2023]
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34
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Srivastava A, Zode SS, Pandey J, Srivastava K, Tandon P, Ayala AP, Bansal AK. A novel approach to design febuxostat-salicylic acid eutectic system: evaluation and characterization. CrystEngComm 2019. [DOI: 10.1039/c8ce01212a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The current study was aimed at investigating the febuxostat-salicylic acid (FXT-SAA) eutectic system using two polymorphs of FXT, form Q and form A.
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Affiliation(s)
| | - Sandeep S. Zode
- Department of Pharmaceutics
- National Institute of Pharmaceutical Education and Research (NIPER)
- S. A. S. Nagar
- India
| | - Jaya Pandey
- Department of Physics
- University of Lucknow
- Lucknow 226 007
- India
| | | | - Poonam Tandon
- Department of Physics
- University of Lucknow
- Lucknow 226 007
- India
| | - Alejandro P. Ayala
- Departamento de Física
- Universidade Federal do Ceará
- 60.455-900 Fortaleza
- Brazil
| | - Arvind K. Bansal
- Department of Pharmaceutics
- National Institute of Pharmaceutical Education and Research (NIPER)
- S. A. S. Nagar
- India
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35
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Kamalakaran AS. Molecular Adducts of Isoniazid: Crystal Structure, Electronic Properties, and Hirshfeld Surface Analysis. J STRUCT CHEM+ 2018. [DOI: 10.1134/s002247661807003x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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36
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Yadav JPA, Yadav B, Kumar N, Bansal AK, Jain S. Revealing the Role of Structural Features in Bulk Mechanical Performance of Ternary Molecular Solids of Isoniazid. Mol Pharm 2018; 15:5252-5262. [PMID: 30265542 DOI: 10.1021/acs.molpharmaceut.8b00759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Mechanical performance in ternary (3n) molecular solids has been rarely studied, and hence it is an interesting topic of investigation in the direct compression method of tableting. The structural features of 3n-eutectic (3n-Eu: INZ-ADP-NIC) and 3n-cocrystal (3n-Co: INZ:SUC:NIC) were explored to understand the bonding area-bonding strength (BA-BS) interplay. Higher compressibility and lower values of the Heckel parameter of 3n-Co as compared to 3n-Eu suggested its better deformation behavior, with BA being the predominant factor. The higher tensile strength and Walker analysis indicated a higher compressibility coefficient ( W) and lower pressing modulus ( L) for 3n-Eu, which was consistent with its better tabletability over 3n-Co. The higher compressibility and plastic energy, and higher value of L of 3n-Co, were attributed to the facile propagation (⟨-1' 0' 5'⟩) of the shearing molecular slip (-1 0 5) when subjected to the external mechanical stress. Thus, the overall higher tableting performance of 3n-Eu over 3n-Co was found due to the predominant BS and limited contribution of BA. The latter was the dominant factor in 3n-Co. Cohesive interactions, like the 3D mechanically interlocked structure of conglomerates of 3n-Eu, contributed toward the higher BS. Moreover, the prediction of better tabletability solely based on crystallographic feature slip planes (0D/1D/2D H-bonded layer (h k l) ⊥ vdW interactions) is warranted in pharmaceutical molecular solids. Eutectics with varying microstructural variants ( nLα + nLβ + nLγ) may open up the opportunity to manipulate the physicomechanical performance.
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Affiliation(s)
- Jay Prakash A Yadav
- National Institute of Pharmaceutical Education and Research (NIPER) , Sector 67 , S.A.S. Nagar , 160 062 Punjab , India
| | - Bharat Yadav
- Department of Mechanical Engineering, Centre of Materials Science and Energy Engineering , Indian Institute of Technology (IIT) Ropar , Rupnagar , 140 001 Punjab , India
| | - Navin Kumar
- Department of Mechanical Engineering, Centre of Materials Science and Energy Engineering , Indian Institute of Technology (IIT) Ropar , Rupnagar , 140 001 Punjab , India
| | - Arvind K Bansal
- National Institute of Pharmaceutical Education and Research (NIPER) , Sector 67 , S.A.S. Nagar , 160 062 Punjab , India
| | - Sanyog Jain
- National Institute of Pharmaceutical Education and Research (NIPER) , Sector 67 , S.A.S. Nagar , 160 062 Punjab , India
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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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Hutchins KM. Functional materials based on molecules with hydrogen-bonding ability: applications to drug co-crystals and polymer complexes. ROYAL SOCIETY OPEN SCIENCE 2018; 5:180564. [PMID: 30110449 PMCID: PMC6030288 DOI: 10.1098/rsos.180564] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 05/25/2018] [Indexed: 05/31/2023]
Abstract
The design, synthesis and property characterization of new functional materials has garnered interest in a variety of fields. Materials that are capable of recognizing and binding with small molecules have applications in sensing, sequestration, delivery and property modification. Specifically, recognition of pharmaceutical compounds is of interest in each of the aforementioned application areas. Numerous pharmaceutical compounds comprise functional groups that are capable of engaging in hydrogen-bonding interactions; thus, materials that are able to act as hydrogen-bond receptors are of significant interest for these applications. In this review, we highlight some crystalline and polymeric materials that recognize and engage in hydrogen-bonding interactions with pharmaceuticals or small biomolecules. Moreover, as pharmaceuticals often exhibit multiple hydrogen-bonding sites, many donor/acceptor molecules have been specifically designed to interact with the drug via such multiple-point hydrogen bonds. The formation of multiple hydrogen bonds not only increases the strength of the interaction but also affords unique hydrogen-bonded architectures.
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Affiliation(s)
- Kristin M. Hutchins
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409, USA
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Novel Isoniazid cocrystals with aromatic carboxylic acids: Crystal engineering, spectroscopy and thermochemical investigations. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.09.115] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Kennedy SR, Jones CD, Yufit DS, Nicholson CE, Cooper SJ, Steed JW. Tailored supramolecular gel and microemulsion crystallization strategies – is isoniazid really monomorphic? CrystEngComm 2018. [DOI: 10.1039/c8ce00066b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A tailored supramolecular gel and microemulsion crystallization strategy has been applied to isoniazid crystal screening.
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Sarmah KK, Rajbongshi T, Bhowmick S, Thakuria R. First-line antituberculosis drug, pyrazinamide, its pharmaceutically relevant cocrystals and a salt. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS 2017; 73:1007-1016. [DOI: 10.1107/s2052520617011477] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 08/04/2017] [Indexed: 11/10/2022]
Abstract
A few pyrazinamide (Pyz) cocrystals involving hydroxybenzoic/cinnamic acid derivatives [2,4-dihydroxybenzoic acid (24DHBA); 2,6-dihydroxybenzoic acid (26DHBA); 3,5-dihydroxybenzoic acid (35DHBA) and nutraceutical molecule ferulic acid (FRA)] and the first example of a molecular salt with p-toluenesulfonic acid (pTSA) have been prepared and characterized using various solid-state techniques. A high-temperature cocrystal polymorph of Pyz·FRA has been characterized from the endothermic peaks observed using differential scanning calorimetry. The presence of substituent groups carrying hydrogen bond donors or acceptors and their influence on supramolecular synthon formation has been investigated using a Cambridge Structural Database search. Equilibrium solubility of all the binary complexes of Pyz follows the order of their coformer solubility, i.e. Pyz+·pTSA− > Pyz·35DHBA > Pyz > Pyz·26DHBA > Pyz·24DHBA > Pyz·FRA. A twofold enhancement in solubility of Pyz+·pTSA− molecular salt compared with the parent drug suggests a potential drug formulation for the treatment of tuberculosis.
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Levetiracetam+nonsteroidal anti-inflammatory drug binary systems: A contribution to the development of new solid dosage forms. Int J Pharm 2017; 533:1-13. [PMID: 28893584 DOI: 10.1016/j.ijpharm.2017.09.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 09/04/2017] [Accepted: 09/06/2017] [Indexed: 01/12/2023]
Abstract
A study has been carried out of binary solid systems made up of the antiepileptic drug levetiracetam, LEV, and a nonsteroidal anti-inflammatory drug, NSAID, capable of managing the inflammation that accompanies epileptic activity. One aim of this research was to identify eutectic mixtures and co-crystals, which are able to impact positively on their biopharmaceutical properties. The NSAIDs studied are (S)- and (R,S)-ibuprofen, (S)- and (R,S)-naproxen, (R,S)-ketoprofen and (R,S)-flurbiprofen, all class II in the Biopharmaceutical Classification System. A green mechanochemical methodology has been used to prepare binary mixtures with different molar ratios, and the binary solid-liquid phase diagrams established. For LEV+(S)-ibuprofen, formation of a single (1:1) co-crystal was confirmed; this was found to melt incongruently. The co-crystal was found to be stable in accelerated stability tests. For the other systems, interesting eutectic mixtures were identified, which showed enhanced dissolution rates of the NSAID relative to the pure drug. For LEV+(R,S)-ibuprofen, LEV+(S)-naproxen and LEV+(R,S)-naproxen, the eutectic mixture compositions have the effective doses of both components. All the NSAIDs investigated are chiral, and their racemates are racemic compounds. Levetiracetam, the (S)-enantiomer of etiracetam, was not efficient in enantiomer discrimination, as all the racemic compound structures are present as the prepared solid mixtures.
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Fast dissolving drug-drug eutectics with improved compressibility and synergistic effects. Eur J Pharm Sci 2017; 104:82-89. [DOI: 10.1016/j.ejps.2017.03.042] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Revised: 12/23/2016] [Accepted: 03/29/2017] [Indexed: 01/28/2023]
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Nakanishi T, Sato O. Crystal structures of two nickel compounds comprising neutral Ni II hydrazone complexes and di-carb-oxy-lic acids. Acta Crystallogr E Crystallogr Commun 2017; 73:103-106. [PMID: 28217320 PMCID: PMC5290543 DOI: 10.1107/s2056989016020326] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 12/22/2016] [Indexed: 11/10/2022]
Abstract
Two isostructural NiII compounds, bis-{N-[1-(pyridin-2-yl-κN)eth-ylidene]pyridine-4-carbohydrazonato-κ2N',O}nickel(II)-2,5-di-chloro-terephthalic acid (1/1), [Ni(C13H11N4O)2](C8H4Cl2O4), and bis-{N-[1-(pyridin-2-yl-κN)eth-ylidene]pyridine-4-carbohydrazonato-κ2N',O}nickel(II)-2,5-di-bromo-terephthalic acid (1/1), [Ni(C13H11N4O)2](C8H4Br2O4), were synthesized and their crystal structures determined. The pair of N,N',O-tridentate N-[1-(pyridin-2-yl-κN)eth-yl]pyridine-4-carbohydrazonate L ligands result in a cis-NiO2N4 octa-hedral coordination sphere for the metal ions. The asymmetric units consist of two half-mol-ecules of the di-carb-oxy-lic acids, which are completed by crystallographic inversion symmetry. In the respective crystals, the 2,5-di-chloro-terephthalic acid (H2Cl2TPA, 1-Cl) mol-ecules form zigzag hydrogen-bonded chains with the [Ni(L)2] mol-ecules, with the hydrogen-bond distances in 1-Br slightly longer than those in 1-Cl. The packing is consolidated by aromatic π-π stacking between the di-carb-oxy-lic acid mol-ecules and terminal pyridine rings in [Ni(L)2] and short halogen-halogen inter-actions are also observed. The qualitative prediction of the H-atom position from the C-N-C angles of the terminal pyridine rings in L and the C-O distances in the carboxyl groups show that 1-Cl and 1-Br are co-crystals rather than salts.
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Affiliation(s)
- Takumi Nakanishi
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motoka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motoka, Nishi-ku, Fukuoka 819-0395, Japan
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Synthesis, Structure, and Magnetic Properties of New Spin Crossover Fe(II) Complexes Forming Short Hydrogen Bonds with Substituted Dicarboxylic Acids. CRYSTALS 2016. [DOI: 10.3390/cryst6100131] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Effects of the crystal structure and thermodynamic stability on solubility of bioactive compounds: DFT study of isoniazid cocrystals. COMPUT THEOR CHEM 2016. [DOI: 10.1016/j.comptc.2016.07.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mashhadi SMA, Yunus U, Bhatti MH, Ahmed I, Tahir MN. Synthesis, characterization, solubility and stability studies of hydrate cocrystal of antitubercular Isoniazid with antioxidant and anti-bacterial Protocatechuic acid. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.03.057] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Oruganti M, Khade P, Das UK, Trivedi DR. The hierarchies of hydrogen bonds in salts/cocrystals of isoniazid and its Schiff base – a case study. RSC Adv 2016. [DOI: 10.1039/c5ra14951g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of two salts of isoniazid and two cocrystals of its Schiff base have been synthesized and well characterized. Further, the hydrogen bonding patterns have been studied and the correlation between the bond distances and corresponding pKa's have been deduced.
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Affiliation(s)
- Madhavi Oruganti
- Supramolecular Chemistry Laboratory
- Department of Chemistry
- National Institute of Technology Karnataka (NITK)-Surathkal
- Mangalore-575 025
- India
| | - Pavan Khade
- Department of Chemical Engineering
- National Institute of Technology Karnataka (NITK) Surathkal
- Mangalore-575 025
- India
| | - Uttam Kumar Das
- Department of Organic Chemistry
- Indian Association for the Cultivation of Science
- Kolkata
- India
| | - Darshak R. Trivedi
- Supramolecular Chemistry Laboratory
- Department of Chemistry
- National Institute of Technology Karnataka (NITK)-Surathkal
- Mangalore-575 025
- India
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Aitipamula S, Wong ABH, Chow PS, Tan RBH. Novel solid forms of oxaprozin: cocrystals and an extended release drug–drug salt of salbutamol. RSC Adv 2016. [DOI: 10.1039/c6ra01802e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel solid forms of an anti-inflammatory drug, oxaprozin, were identified. A drug–drug salt of oxaprozin with salbutamol was proved promising for development of extended release tablet formulations of salbutamol.
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Affiliation(s)
- Srinivasulu Aitipamula
- Crystallization and Particle Science
- Institute of Chemical and Engineering Sciences
- A*STAR (Agency for Science, Technology and Research)
- Singapore
| | - Annie B. H. Wong
- Crystallization and Particle Science
- Institute of Chemical and Engineering Sciences
- A*STAR (Agency for Science, Technology and Research)
- Singapore
| | - Pui Shan Chow
- Crystallization and Particle Science
- Institute of Chemical and Engineering Sciences
- A*STAR (Agency for Science, Technology and Research)
- Singapore
| | - Reginald B. H. Tan
- Crystallization and Particle Science
- Institute of Chemical and Engineering Sciences
- A*STAR (Agency for Science, Technology and Research)
- Singapore
- Department of Chemical & Biomolecular Engineering
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Cherukuvada S, Kaur R, Guru Row TN. Co-crystallization and small molecule crystal form diversity: from pharmaceutical to materials applications. CrystEngComm 2016. [DOI: 10.1039/c6ce01835a] [Citation(s) in RCA: 113] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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