1
|
Ghosh KK, RajanBabu TV. Ligand Effects in Carboxylic Ester- and Aldehyde-Assisted β-C-H Activation in Regiodivergent and Enantioselective Cycloisomerization-Hydroalkenylation and Cycloisomerization-Hydroarylation, and [2 + 2 + 2]-Cycloadditions of 1,6-Enynes. J Am Chem Soc 2024; 146:18753-18770. [PMID: 38935521 DOI: 10.1021/jacs.4c06796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
Herein, we report room temperature, atom-economic protocols for high regio- and enantioselective tandem cycloisomerization-hydroarylation and cycloisomerization-hydroalkenylation of 1,6-enynes leading to vicinal carba-functionalized pyrrolidines, tetrahydrofurans, and cyclopentanes. The latter steps in these processes involve carbonyl-coordination-assisted ortho-C-H activation of aromatic aldehydes and esters, and, a similar, yet rarely seen, β-C-H activation in the case of the acrylates. Synthetically useful enantioselective versions of such reactions are rare and are limited to the C2-H activation of indoles and pyrroles. A similar reaction is also observed with N-vinylphthalimide, which also has a carbonyl group suitable for C-H activation. A dibenzooxaphosphole ligand, (2S,2S',3S,3S')-MeO-BIBOP was uniquely identified as crucial to achieving the challenging regio- and enantioselectivity. This methodology gives access to substituted five-membered carbo- and heterocyclic compounds in good yields and excellent enantioselectivities under a low catalyst loading. A primary KIE of 3.5 is observed in an intermolecular competition experiment with methyl benzoate and d5-methyl benzoate, which indicates that the C-H cleavage is the turnover-limiting step of this process. Unlike the acrylates, which undergoes exclusive hydroalkenylation, a β, γ-unsaturated ester, methyl but-3-enoate, undergoes the highly enantioselective cycloisomerization-coupling sequence with a 1,6-enyne giving either a [2 + 2 + 2]-cycloaddition with (S, S)-BDPP or hydroalkenylation with (2S,2'S,3S,3'S)-MeO-BIBOP depending on the ligand employed. The (E)-configuration of the newly formed double bond at the terminal alkynyl carbon (of the starting enyne) in the hydroalkenylation product of β,γ-unsaturated ester suggests a more classical migratory insertion-β-hydride elimination route for the formation of this product.
Collapse
Affiliation(s)
- Kiron K Ghosh
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - T V RajanBabu
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| |
Collapse
|
2
|
Yoon HJ, Kundu S, Wu S. Molecular Dynamics Simulation Study of the Selective Inhibition of Coagulation Factor IXa over Factor Xa. Molecules 2023; 28:6909. [PMID: 37836752 PMCID: PMC10574344 DOI: 10.3390/molecules28196909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/28/2023] [Accepted: 09/29/2023] [Indexed: 10/15/2023] Open
Abstract
Thromboembolic disorders, arising from abnormal coagulation, pose a significant risk to human life in the modern world. The FDA has recently approved several anticoagulant drugs targeting factor Xa (FXa) to manage these disorders. However, these drugs have potential side effects, leading to bleeding complications in patients. To mitigate these risks, coagulation factor IXa (FIXa) has emerged as a promising target due to its selective regulation of the intrinsic pathway. Due to the high structural and functional similarities of these coagulation factors and their inhibitor binding modes, designing a selective inhibitor specifically targeting FIXa remains a challenging task. The dynamic behavior of protein-ligand interactions and their impact on selectivity were analyzed using molecular dynamics simulation, considering the availability of potent and selective compounds for both coagulation factors and the co-crystal structures of protein-ligand complexes. Throughout the simulations, we examined ligand movements in the binding site, as well as the contact frequencies and interaction fingerprints, to gain insights into selectivity. Interaction fingerprint (IFP) analysis clearly highlights the crucial role of strong H-bond formation between the ligand and D189 and A190 in the S1 subsite for FIXa selectivity, consistent with our previous study. This dynamic analysis also reveals additional FIXa-specific interactions. Additionally, the absence of polar interactions contributes to the selectivity for FXa, as observed from the dynamic profile of interactions. A contact frequency analysis of the protein-ligand complexes provides further confirmation of the selectivity criteria for FIXa and FXa, as well as criteria for binding and activity. Moreover, a ligand movement analysis reveals key interaction dynamics that highlight the tighter binding of selective ligands to the proteins compared to non-selective and inactive ligands.
Collapse
Affiliation(s)
- Hyun Jung Yoon
- Department of Physics, Pukyong National University, Busan 48513, Republic of Korea;
| | - Sibsankar Kundu
- R&D Center, PharmCADD Co., Ltd., Busan 48792, Republic of Korea;
| | - Sangwook Wu
- Department of Physics, Pukyong National University, Busan 48513, Republic of Korea;
- R&D Center, PharmCADD Co., Ltd., Busan 48792, Republic of Korea;
| |
Collapse
|
3
|
A Structure Based Study of Selective Inhibition of Factor IXa over Factor Xa. Molecules 2021; 26:molecules26175372. [PMID: 34500804 PMCID: PMC8434132 DOI: 10.3390/molecules26175372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 08/27/2021] [Accepted: 08/30/2021] [Indexed: 11/25/2022] Open
Abstract
Blood coagulation is an essential physiological process for hemostasis; however, abnormal coagulation can lead to various potentially fatal disorders, generally known as thromboembolic disorders, which are a major cause of mortality in the modern world. Recently, the FDA has approved several anticoagulant drugs for Factor Xa (FXa) which work via the common pathway of the coagulation cascade. A main side effect of these drugs is the potential risk for bleeding in patients. Coagulation Factor IXa (FIXa) has recently emerged as the strategic target to ease these risks as it selectively regulates the intrinsic pathway. These aforementioned coagulation factors are highly similar in structure, functional architecture, and inhibitor binding mode. Therefore, it remains a challenge to design a selective inhibitor which may affect only FIXa. With the availability of a number of X-ray co-crystal structures of these two coagulation factors as protein–ligand complexes, structural alignment, molecular docking, and pharmacophore modeling were employed to derive the relevant criteria for selective inhibition of FIXa over FXa. In this study, six ligands (three potent, two selective, and one inactive) were selected for FIXa inhibition and six potent ligands (four FDA approved drugs) were considered for FXa. The pharmacophore hypotheses provide the distribution patterns for the principal interactions that take place in the binding site. None of the pharmacophoric patterns of the FXa inhibitors matched with any of the patterns of FIXa inhibitors. Based on pharmacophore analysis, a selectivity of a ligand for FIXa over FXa may be defined quantitatively as a docking score of lower than −8.0 kcal/mol in the FIXa-grids and higher than −7.5 kcal/mol in the FXa-grids.
Collapse
|
4
|
Santana-Romo F, Lagos CF, Duarte Y, Castillo F, Moglie Y, Maestro MA, Charbe N, Zacconi FC. Innovative Three-Step Microwave-Promoted Synthesis of N-Propargyltetrahydroquinoline and 1,2,3-Triazole Derivatives as a Potential Factor Xa (FXa) Inhibitors: Drug Design, Synthesis, and Biological Evaluation. Molecules 2020; 25:molecules25030491. [PMID: 31979319 PMCID: PMC7037264 DOI: 10.3390/molecules25030491] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 01/19/2020] [Accepted: 01/20/2020] [Indexed: 12/22/2022] Open
Abstract
The coagulation cascade is the process of the conversion of soluble fibrinogen to insoluble fibrin that terminates in production of a clot. Factor Xa (FXa) is a serine protease involved in the blood coagulation cascade. Moreover, FXa plays a vital role in the enzymatic sequence which ends with the thrombus production. Thrombosis is a common causal pathology for three widespread cardiovascular syndromes: acute coronary syndrome (ACS), venous thromboembolism (VTE), and strokes. In this research a series of N-propargyltetrahydroquinoline and 1,2,3-triazole derivatives as a potential factor Xa (FXa) inhibitor were designed, synthesized, and evaluated for their FXa inhibitor activity, cytotoxicity activity and coagulation parameters. Rational design for the desired novel molecules was performed through protein-ligand complexes selection and ligand clustering. The microwave-assisted synthetic strategy of selected compounds was carried out by using Ullmann-Goldberg, N-propargylation, Mannich addition, Friedel-Crafts, and 1,3-dipolar cycloaddition type reactions under microwave irradiation. The microwave methodology proved to be an efficient way to obtain all novel compounds in high yields (73–93%). Furthermore, a thermochemical analysis, optimization and reactivity indexes such as electronic chemical potential (µ), chemical hardness (η), and electrophilicity (ω) were performed to understand the relationship between the structure and the energetic behavior of all the series. Then, in vitro analysis showed that compounds 27, 29–31, and 34 exhibited inhibitory activity against FXa and the corresponding half maximal inhibitory concentration (IC50) values were calculated. Next, a cell viability assay in HEK293 and HepG2 cell lines, and coagulation parameters (anti FXa, Prothrombin time (PT), activated Partial Thromboplastin Time (aPTT)) of the most active novel molecules were performed to determine the corresponding cytotoxicity and possible action on clotting pathways. The obtained results suggest that compounds 27 and 29 inhibited FXa targeting through coagulation factors in the intrinsic and extrinsic pathways. However, compound 34 may target coagulation FXa mainly by the extrinsic and common pathway. Interestingly, the most active compounds in relation to the inhibition activity against FXa and coagulation parameters did not show toxicity at the performed coagulation assay concentrations. Finally, docking studies confirmed the preferential binding mode of N-propargyltetrahydroquinoline and 1,2,3-triazole derivatives inside the active site of FXa.
Collapse
Affiliation(s)
- Fabián Santana-Romo
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile; (F.S.-R.); (F.C.); (N.C.)
| | - Carlos F. Lagos
- Chemical Biology & Drug Discovery Laboratory, Facultad de Medicina y Ciencia, Universidad San Sebastián, Lota 2465, Providencia 7510157, Santiago de Chile, Chile;
| | - Yorley Duarte
- Center for Bioinformatics and Integrative Biology, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago 8370146, Chile;
| | - Francisco Castillo
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile; (F.S.-R.); (F.C.); (N.C.)
- Institute for Biological and Medical Engineering, Schools of Engineering, Medicine and Biological Sciences, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile
| | - Yanina Moglie
- Departamento de Química, Instituto de Química del Sur (INQUISUR-CONICET), Universidad Nacional del Sur Avenida Alem 1253, Bahía Blanca B8000CPB, Argentina;
| | - Miguel A. Maestro
- Department of Chemistry—CICA, University of A Coruña, Campus da Zapateira, 15008A A Coruña, Spain;
| | - Nitin Charbe
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile; (F.S.-R.); (F.C.); (N.C.)
| | - Flavia C. Zacconi
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile; (F.S.-R.); (F.C.); (N.C.)
- Institute for Biological and Medical Engineering, Schools of Engineering, Medicine and Biological Sciences, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile
- Correspondence: ; Tel.: +56-2354-1150
| |
Collapse
|
5
|
Design and synthesis of novel 3,4-diaminobenzoyl derivatives as antithrombotic agents with improved solubility. CHEMICAL PAPERS 2018. [DOI: 10.1007/s11696-018-0645-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
6
|
Dimitropoulos G, Rahim SMZ, Moss AS, Lip GYH. New anticoagulants for venous thromboembolism and atrial fibrillation: what the future holds. Expert Opin Investig Drugs 2017; 27:71-86. [DOI: 10.1080/13543784.2018.1416090] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Gerasimos Dimitropoulos
- Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, UK
- Cardiology Department, City Hospital, Birmingham, UK
| | - S. M. Zubair Rahim
- Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, UK
- Cardiology Department, City Hospital, Birmingham, UK
| | - Alexandra Sophie Moss
- Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, UK
- Cardiology Department, City Hospital, Birmingham, UK
| | - Gregory Y. H. Lip
- Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, UK
- Aalborg Thrombosis Research Unit, Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| |
Collapse
|
7
|
Fischer PM. Design of Small-Molecule Active-Site Inhibitors of the S1A Family Proteases as Procoagulant and Anticoagulant Drugs. J Med Chem 2017; 61:3799-3822. [DOI: 10.1021/acs.jmedchem.7b00772] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Peter M. Fischer
- School of Pharmacy and Centre for Biomolecular Sciences, University of Nottingham, Nottingham NG7 2RD, U.K
| |
Collapse
|
8
|
Lagos CF, Segovia GF, Nuñez-Navarro N, Faúndez MA, Zacconi FC. Novel FXa Inhibitor Identification through Integration of Ligand- and Structure-Based Approaches. Molecules 2017; 22:molecules22101588. [PMID: 28937618 PMCID: PMC6151700 DOI: 10.3390/molecules22101588] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 09/15/2017] [Accepted: 09/18/2017] [Indexed: 12/31/2022] Open
Abstract
Factor Xa (FXa), a vitamin K-dependent serine protease plays a pivotal role in the coagulation cascade, one of the most interesting targets for the development of new anticoagulants. In the present work, we performed a virtual screening campaign based on ligand-based shape and electrostatic similarity search and protein-ligand docking to discover novel FXa-targeted scaffolds for further development of inhibitors. From an initial set of 260,000 compounds from the NCI Open database, 30 potential FXa inhibitors were identified and selected for in vitro biological evaluation. Compound 5 (NSC635393, 4-(3-methyl-4H-1,4-benzothiazin-2-yl)-2,4-dioxo-N-phenylbutanamide) displayed an IC50 value of 2.02 nM against human FXa. The identified compound may serve as starting point for the development of novel FXa inhibitors.
Collapse
Affiliation(s)
- Carlos F Lagos
- Department of Endocrinology, School of Medicine, Pontificia Universidad Católica de Chile, Lira 85, Santiago 8330074, Chile.
- Facultad de Ciencia, Universidad San Sebastián, Campus Los Leones, Lota 2465, Providencia, Santiago 7510157, Chile.
| | - Gerardine F Segovia
- Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile.
| | - Nicolás Nuñez-Navarro
- Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile.
| | - Mario A Faúndez
- Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile.
| | - Flavia C Zacconi
- Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile.
- Centro de Investigación en Nanotecnología y Materiales Avanzados, CIEN-UC, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile.
| |
Collapse
|
9
|
Xing J, Yang L, Yang Y, Zhao L, Wei Q, Zhang J, Zhou J, Zhang H. Design, synthesis and biological evaluation of novel 2,3-dihydroquinazolin- 4(1H)-one derivatives as potential fXa inhibitors. Eur J Med Chem 2016; 125:411-422. [PMID: 27689724 DOI: 10.1016/j.ejmech.2016.09.055] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 09/16/2016] [Accepted: 09/18/2016] [Indexed: 12/31/2022]
Abstract
Coagulation factor Xa (fXa) is a particularly attractive target for the development of effective and safe anticoagulants. In this study, novel 2,3-dihydroquinazolin-4(1H)-one derivatives were designed as potential fXa inhibitors based on anthranilamide structure which has been reported in our previous research. The experimental data showed that most of the designed compounds exhibited significant in vitro potency against fXa. Among them, compound 8e displayed the strongest potency against fXa with the IC50 value of 21 nM and highly selectivity versus thrombin (IC50 = 67 μM) and excellent in vitro antithrombotic activity with its 2 × PT value of 1.2 μM and 2 × aPTT value of 0.6 μM. In addition, 8e also displayed excellent in vivo antithrombotic activity in the rat arteriovenous shunt (AV-SHUNT) model. The bleeding risk evaluation showed that 8e had a similar safety profile as that of betrixaban. All results demonstrated that compound 8e could be considered as a potential fXa inhibitor for the prevention and treatment of thromboembolic diseases.
Collapse
Affiliation(s)
- Junhao Xing
- Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, 210009 Nanjing, PR China.
| | - Lingyun Yang
- Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, 210009 Nanjing, PR China
| | - Yifei Yang
- Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, 210009 Nanjing, PR China
| | - Leilei Zhao
- Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, 210009 Nanjing, PR China
| | - Qiangqiang Wei
- Department of Medicinal Chemistry, China Pharmaceutical University, TongjiaXiang 24, 210009 Nanjing, PR China
| | - Jian Zhang
- Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, 210009 Nanjing, PR China
| | - Jinpei Zhou
- Department of Medicinal Chemistry, China Pharmaceutical University, TongjiaXiang 24, 210009 Nanjing, PR China
| | - Huibin Zhang
- Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, 210009 Nanjing, PR China; Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, China Pharmaceutical University, Nanjing 210009, PR China.
| |
Collapse
|
10
|
Patel NR, Patel DV, Murumkar PR, Yadav MR. Contemporary developments in the discovery of selective factor Xa inhibitors: A review. Eur J Med Chem 2016; 121:671-698. [PMID: 27322757 DOI: 10.1016/j.ejmech.2016.05.039] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 04/25/2016] [Accepted: 05/19/2016] [Indexed: 11/25/2022]
Abstract
Thrombosis is a leading cause of death in cardiovascular diseases such as myocardial infarction (MI), unstable angina and acute coronary syndrome (ACS) in the industrialized world. Venous thromboembolism is observed in about 1 million people every year in United States causing significant morbidity and mortality. Conventional antithrombotic therapy has been reported to have several disadvantages and limitations like inconvenience in oral administration, bleeding risks (heparin analogs), narrow therapeutic window and undesirable interactions with food and drugs (vitamin K antagonist-warfarin). The unmet medical demand for orally active safe anticoagulants has generated widespread interest among the medicinal chemists engaged in this field. To modulate blood coagulation, various enzymes involved in the coagulation process have received great attention as potential targets by various research groups for the development of oral anticoagulants. Among these enzymes, factor Xa (FXa) has remained the centre of attention in the last decade. Intensive research efforts have been made by various research groups for the development of small, safe and orally bioavailable FXa inhibitors. This review is an attempt to compile the research work of various researchers in the direction of development of FXa inhibitors reported since 2010 onward.
Collapse
Affiliation(s)
- Nirav R Patel
- Faculty of Pharmacy, Kalabhavan Campus, The Maharaja Sayajirao University of Baroda, Vadodara 390001, Gujarat, India
| | - Dushyant V Patel
- Faculty of Pharmacy, Kalabhavan Campus, The Maharaja Sayajirao University of Baroda, Vadodara 390001, Gujarat, India
| | - Prashant R Murumkar
- Faculty of Pharmacy, Kalabhavan Campus, The Maharaja Sayajirao University of Baroda, Vadodara 390001, Gujarat, India
| | - Mange Ram Yadav
- Faculty of Pharmacy, Kalabhavan Campus, The Maharaja Sayajirao University of Baroda, Vadodara 390001, Gujarat, India.
| |
Collapse
|
11
|
Theoretical Study of Molecular Structure and Physicochemical Properties of Novel Factor Xa Inhibitors and Dual Factor Xa and Factor IIa Inhibitors. Molecules 2016; 21:molecules21020185. [PMID: 26861270 PMCID: PMC6273828 DOI: 10.3390/molecules21020185] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 01/27/2016] [Accepted: 01/27/2016] [Indexed: 12/13/2022] Open
Abstract
The geometries and energies of factor Xa inhibitors edoxaban, eribaxaban, fidexaban, darexaban, letaxaban, and the dual factor Xa and thrombin inhibitors tanogitran and SAR107375 in both the gas-phase and aqueous solution were studied using the Becke3LYP/6-31++G(d,p) or Grimme’s B97D/6-31++G(d,p) method. The fully optimized conformers of these anticoagulants show a characteristic l-shape structure, and the water had a remarkable effect on the equilibrium geometry. According to the calculated pKa values eribaxaban and letaxaban are in neutral undissociated form at pH 7.4, while fidexaban and tanogitran exist as zwitterionic structures. The lipophilicity of the inhibitors studied lies within a large range of log P between 1 and 4. The dual inhibitor SAR107375 represents an improvement in structural, physicochemical and pharmacokinetic characteristics over tanogitran. At blood pH, SAR107375 predominantly exists in neutral form. In contrast with tanogitran, it is better absorbed and more lipophilic and active after oral application.
Collapse
|
12
|
Yang J, Su G, Ren Y, Chen Y. Synthesis of 3,4-diaminobenzoyl derivatives as factor Xa inhibitors. Eur J Med Chem 2015; 101:41-51. [PMID: 26114810 DOI: 10.1016/j.ejmech.2015.06.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 05/22/2015] [Accepted: 06/05/2015] [Indexed: 02/05/2023]
Abstract
The coagulation factor Xa (FXa) plays a central role in the blood coagulation cascade. Recent studies have shown that FXa is a particularly attractive target for the development of oral antithrombotic agents. In view of the excellent pharmaceutical properties of 1,2-phenylenediamine-based FXa inhibitors and the reported structure-activity relationship (SAR) analysis of FXa inhibitors, we designed and synthesized a series of 3,4-diaminobenzoyl-based FXa inhibitors. Intensive SAR studies on this new series led to the discovery of 3,4-dimethoxyl substituted compound 7b. 7b is a highly potent, selective, direct FXa inhibitor with excellent in vivo antithrombotic activity.
Collapse
Affiliation(s)
- Jiabin Yang
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing, Jiangsu 210096, PR China
| | - Guoqiang Su
- Nanjing Zhongrui Pharmaceutical Co., Ltd., Nanjing, Jiangsu 211100, PR China
| | - Yu Ren
- Nanjing Zhongrui Pharmaceutical Co., Ltd., Nanjing, Jiangsu 211100, PR China
| | - Yang Chen
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing, Jiangsu 210096, PR China.
| |
Collapse
|
13
|
Pinto DJ, Smallheer JM, Corte JR, Austin EJ, Wang C, Fang T, Smith LM, Rossi KA, Rendina AR, Bozarth JM, Zhang G, Wei A, Ramamurthy V, Sheriff S, Myers JE, Morin PE, Luettgen JM, Seiffert DA, Quan ML, Wexler RR. Structure-based design of inhibitors of coagulation factor XIa with novel P1 moieties. Bioorg Med Chem Lett 2015; 25:1635-42. [DOI: 10.1016/j.bmcl.2015.01.028] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 01/13/2015] [Accepted: 01/15/2015] [Indexed: 11/17/2022]
|
14
|
Xue T, Ding S, Guo B, Zhou Y, Sun P, Wang H, Chu W, Gong G, Wang Y, Chen X, Yang Y. Design, Synthesis, and Structure–Activity and Structure–Pharmacokinetic Relationship Studies of Novel [6,6,5] Tricyclic Fused Oxazolidinones Leading to the Discovery of a Potent, Selective, and Orally Bioavailable FXa Inhibitor. J Med Chem 2014; 57:7770-91. [DOI: 10.1021/jm501045e] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tao Xue
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Shi Ding
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Bin Guo
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Yuren Zhou
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Peng Sun
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Heyao Wang
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Wenjing Chu
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Guoqing Gong
- Department
of Pharmacology, School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu Province 210009, China
| | - Yinye Wang
- Department
of Molecular and Cellular Pharmacology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Xiaoyan Chen
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Yushe Yang
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| |
Collapse
|
15
|
Cohen AT, Boyd RA, Mandema JW, Dicarlo L, Pak R. An adaptive-design dose-ranging study of PD 0348292, an oral factor Xa inhibitor, for thromboprophylaxis after total knee replacement surgery. J Thromb Haemost 2013; 11:1503-10. [PMID: 23782955 DOI: 10.1111/jth.12328] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Accepted: 06/14/2013] [Indexed: 11/27/2022]
Abstract
BACKGROUND PD 0348292 is an oral, selective, direct and reversible factor Xa inhibitor. This was an adaptive dose-ranging study evaluating a 100-fold PD 0348292 dose range in subjects undergoing total knee replacement (TKR). OBJECTIVE To assess the efficacy and safety of a dose range of PD 0348292 relative to enoxaparin for the prevention of venous thromboembolism (VTE). METHODS Extensive dose-response modeling and trial simulations were used to select the PD 0348292 dose range for the Phase 2 study. Subjects were randomized to a blinded PD 0348292 dose (0.1 mg qd to 10 mg qd) or open-label enoxaparin (30 mg bid) for 6-14 days after TKR surgery. Efficacy was assessed by mandatory bilateral venography. Results were analyzed using a dose-response modeling approach. RESULTS Observed VTE frequency ranged from 1.4-37.1% across PD 0348292 doses and was 18.1% for enoxaparin. The PD 0348292 dose-response relationship for VTE was statistically significant (P < 0.0001). The dose of PD 0348292 equivalent to enoxaparin 30 mg bid for VTE prevention was estimated to be 1.16 mg (95% CI = 0.56 mg, 2.41 mg) qd. Total bleeding ranged from 4.9% to 13.8% across PD 0348292 doses and was 6.3% with enoxaparin. The dose-response relationship for total bleeding was not statistically significant (P = 0.2464). Overall, PD 0348292 and enoxaparin were well tolerated. CONCLUSION Characterization of the dose-response relationship for VTE and bleeding using an adaptive Phase 2 study design provided a strong quantitative basis for Phase 3 dose selection.
Collapse
Affiliation(s)
- A T Cohen
- Vascular Medicine, Department of Vascular Surgery, King's College Hospital, London, UK
| | | | | | | | | |
Collapse
|
16
|
|
17
|
Salonen LM, Holland MC, Kaib PSJ, Haap W, Benz J, Mary JL, Kuster O, Schweizer WB, Banner DW, Diederich F. Molecular recognition at the active site of factor Xa: cation-π interactions, stacking on planar peptide surfaces, and replacement of structural water. Chemistry 2011; 18:213-22. [PMID: 22162109 DOI: 10.1002/chem.201102571] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Indexed: 11/10/2022]
Abstract
Factor Xa, a serine protease from the blood coagulation cascade, is an ideal enzyme for molecular recognition studies, as its active site is highly shape-persistent and features distinct, concave sub-pockets. We developed a family of non-peptidic, small-molecule inhibitors with a central tricyclic core orienting a neutral heterocyclic substituent into the S1 pocket and a quaternary ammonium ion into the aromatic box in the S4 pocket. The substituents were systematically varied to investigate cation-π interactions in the S4 pocket, optimal heterocyclic stacking on the flat peptide walls lining the S1 pocket, and potential water replacements in both the S1 and the S4 pockets. Structure-activity relationships were established to reveal and quantify contributions to the binding free enthalpy, resulting from single-atom replacements or positional changes in the ligands. A series of high-affinity ligands with inhibitory constants down to K(i)=2 nM were obtained and their proposed binding geometries confirmed by X-ray co-crystal structures of protein-ligand complexes.
Collapse
Affiliation(s)
- Laura M Salonen
- Laboratorium für Organische Chemie, ETH Zürich, Wolfgang-Pauli-Strasse 10, HCI, 8093 Zürich, Switzerland
| | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Zhao HP, Zhang XS, Xiang BR. Discontinued drugs in 2010: cardiovascular drugs. Expert Opin Investig Drugs 2011; 20:1311-25. [PMID: 21870899 DOI: 10.1517/13543784.2011.611500] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
This perspective is a paper discussing drugs dropped from clinical development in the previous years. Specifically, this paper focuses on 16 cardiovascular drugs discontinued in 2010 after reaching Phase I - III clinical trials. Information for this perspective is mainly derived from a search of Pharmaprojects.
Collapse
Affiliation(s)
- Hong-ping Zhao
- Center for Instrumental Analysis, China Pharmaceutical University, Nanjing, Key Laboratory of Drug Quality Control & Pharmacovigilance, Ministry of Education, Jiangsu 210009, People's Republic of China.
| | | | | |
Collapse
|
19
|
Straub A, Roehrig S, Hillisch A. Oral, Direct Thrombin and Factor Xa Inhibitors: The Replacement for Warfarin, Leeches, and Pig Intestines? Angew Chem Int Ed Engl 2011; 50:4574-90. [DOI: 10.1002/anie.201004575] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2010] [Indexed: 01/09/2023]
|
20
|
Orale, direkte Thrombin- und Faktor-Xa-Hemmer: Kommt die Ablösung für Warfarin, Blutegel und Schweinedärme? Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201004575] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
21
|
Abstract
The limitations of conventional anticoagulants have stimulated the development of new anticoagulants. The central position of factor Xa (FXa) at the junction of the intrinsic and extrinsic pathways in the coagulation cascade means that direct and indirect FXa inhibitors have increasingly changed antithrombotic strategies. FXa inhibitors potently and selectively inhibit thrombin formation rather than thrombin activity. Direct FXa inhibitors may directly bind to FXa, whereas indirect inhibitors are dependent on antithrombin. Direct inhibitors may bind free FXa and, in contrast to indirect inhibitors, FXa within the prothrombinase complex or within clots as well. Fondaparinux is the prototype indirect FXa inhibitor and has been extensively studied in the prevention and treatment of thromboembolic diseases, including acute coronary syndromes. Due to a favourable efficacy and safety profile and convenient once-daily dosing without the need for monitoring, fondaparinux is preferentially recommended in recent guidelines dealing with antithrombotic treatment. A number of small-molecule direct FXa inhibitors are currently at different stages of clinical development. After an extensive clinical trial programme demonstrating superior efficacy without a significant increase in major bleeds compared with enoxaparin, rivaroxaban is now available for the prevention of thromboembolic events in patients undergoing orthopaedic surgery. Rivaroxaban also offers the convenience of oral once-daily dosing without the need for monitoring. Whereas most direct FXa inhibitors are orally active, otamixaban is administered intravenously, offering rapid on-off anticoagulant activity. Other compounds under development may offer additional options for tailored antithrombotic strategies according to differing indications, clinical situations and patient variables.
Collapse
|
22
|
Mehta RS. Novel oral anticoagulants for prophylaxis and treatment of venous thromboembolism: part I (Factor Xa inhibitors). Expert Rev Hematol 2011; 3:227-41. [PMID: 21083465 DOI: 10.1586/ehm.10.5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The quest for an ideal anticoagulant is ongoing. Oral agents that do not require blood level monitoring are presently undergoing taut scrutiny for efficacies and potential side effects, and would potentially soon revolutionize coagulation medicine. The first part of this article reviews oral Factor Xa inhibitors, such as rivaroxaban, apixaban, eribaxaban, edoxaban and YM150--exploring the outcomes of major clinical trials for prophylaxis and treatment of venous thromboembolism--and also briefly outlining their pharmacological properties. The second part of the article (in a separate issue) will cover oral Factor IIa (thrombin), such as dabigatran and AZD0837 and oral Factor IX inhibitors, such as TTP889.
Collapse
Affiliation(s)
- Rohtesh S Mehta
- Department of General Internal Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA.
| |
Collapse
|
23
|
Lee YK, Player MR. Developments in factor Xa inhibitors for the treatment of thromboembolic disorders. Med Res Rev 2011; 31:202-83. [DOI: 10.1002/med.20183] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
24
|
Perzborn E, Roehrig S, Straub A, Kubitza D, Misselwitz F. The discovery and development of rivaroxaban, an oral, direct factor Xa inhibitor. Nat Rev Drug Discov 2010; 10:61-75. [PMID: 21164526 DOI: 10.1038/nrd3185] [Citation(s) in RCA: 214] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
25
|
Yuan J, Cai ZQ, Huang CJ, Xu WR. (2R,4R)-1-(tert-But-oxy-carbon-yl)-4-meth-oxy-pyrrolidine-2-carb-oxy-lic acid. Acta Crystallogr Sect E Struct Rep Online 2010; 66:o3258. [PMID: 21589542 PMCID: PMC3011444 DOI: 10.1107/s1600536810047707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2010] [Accepted: 11/17/2010] [Indexed: 11/10/2022]
Abstract
In the title compound, C(11)H(19)NO(5), the five-membered pyrrolidine ring adopts an envelope conformation. The dihedral angles between the carboxyl group plane, the pyrrolidine ring and the meth-oxy group are 59.50 (3) and 62.02 (1)°, respectively. In the crystal, inter-molecular O-H⋯O hydrogen bonds link the mol-ecules into chains along [100]. The absolute configuration is assigned in accord with that of (2R,4R)-1-(tert-but-oxy-carbon-yl)-4-hy-droxy-pyrrolidine-2-carb-oxy-lic acid, which was the starting material in the synthesis.
Collapse
Affiliation(s)
- Jing Yuan
- Tianjin Key Laboratory of Molecular Drug Design and Discovery, Tianjin Institute of Pharmaceutical Research, Tianjin 300193, People’s Republic of China
| | - Zhi-Qiang Cai
- Tianjin Key Laboratory of Molecular Drug Design and Discovery, Tianjin Institute of Pharmaceutical Research, Tianjin 300193, People’s Republic of China
| | - Chang-Jiang Huang
- Tianjin Key Laboratory of Molecular Drug Design and Discovery, Tianjin Institute of Pharmaceutical Research, Tianjin 300193, People’s Republic of China
| | - Wei-Ren Xu
- Tianjin Key Laboratory of Molecular Drug Design and Discovery, Tianjin Institute of Pharmaceutical Research, Tianjin 300193, People’s Republic of China
- School of Pharmacy, Tianjin Medical University, Tianjin 300070, People’s Republic of China
| |
Collapse
|
26
|
Anselm L, Banner DW, Benz J, Zbinden KG, Himber J, Hilpert H, Huber W, Kuhn B, Mary JL, Otteneder MB, Panday N, Ricklin F, Stahl M, Thomi S, Haap W. Discovery of a factor Xa inhibitor (3R,4R)-1-(2,2-difluoro-ethyl)-pyrrolidine-3,4-dicarboxylic acid 3-[(5-chloro-pyridin-2-yl)-amide] 4-[[2-fluoro-4-(2-oxo-2H-pyridin-1-yl)-phenyl]-amide] as a clinical candidate. Bioorg Med Chem Lett 2010; 20:5313-9. [PMID: 20650636 DOI: 10.1016/j.bmcl.2010.06.126] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2010] [Revised: 06/23/2010] [Accepted: 06/24/2010] [Indexed: 11/16/2022]
Abstract
A series of (3R,4R)-pyrrolidine-3,4-dicarboxylic acid amides was investigated with respect to their factor Xa inhibitory activity, selectivity, pharmacokinetic properties, and ex vivo antithrombotic activity. The clinical candidate from this series, R1663, exhibits excellent selectivity against a panel of serine proteases and good pharmacokinetic properties in rats and monkeys. A Phase I clinical study with R1663 has been finalized.
Collapse
Affiliation(s)
- Lilli Anselm
- F. Hoffmann-La Roche Ltd, Pharma Research, Basel, Switzerland
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Fujimoto T, Imaeda Y, Konishi N, Hiroe K, Kawamura M, Textor GP, Aertgeerts K, Kubo K. Discovery of a tetrahydropyrimidin-2(1H)-one derivative (TAK-442) as a potent, selective, and orally active factor Xa inhibitor. J Med Chem 2010; 53:3517-31. [PMID: 20355714 DOI: 10.1021/jm901699j] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Coagulation enzyme factor Xa (FXa) is a particularly promising target for the development of new anticoagulant agents. We previously reported the imidazo[1,5-c]imidazol-3-one derivative 1 as a potent and orally active FXa inhibitor. However, it was found that 1 predominantly undergoes hydrolysis upon incubation with human liver microsomes, and the human specific metabolic pathway made it difficult to predict the human pharmacokinetics. To address this issue, our synthetic efforts were focused on modification of the imidazo[1,5-c]imidazol-3-one moiety of the active metabolite 3a, derived from 1, which resulted in the discovery of the tetrahydropyrimidin-2(1H)-one derivative 5k as a highly potent and selective FXa inhibitor. Compound 5k showed no detectable amide bond cleavage in human liver microsomes, exhibited a good pharmacokinetic profile in monkeys, and had a potent antithrombotic efficacy in a rabbit model without prolongation of bleeding time. Compound 5k is currently under clinical development with the code name TAK-442.
Collapse
Affiliation(s)
- Takuya Fujimoto
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Ltd., 2-17-85, Jusohomachi, Yodogawa-ku, Osaka 532-8686, Japan
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Pinto DJP, Smallheer JM, Cheney DL, Knabb RM, Wexler RR. Factor Xa Inhibitors: Next-Generation Antithrombotic Agents. J Med Chem 2010; 53:6243-74. [PMID: 20503967 DOI: 10.1021/jm100146h] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Donald J. P. Pinto
- Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey, 08543
| | - Joanne M. Smallheer
- Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey, 08543
| | - Daniel L. Cheney
- Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey, 08543
| | - Robert M. Knabb
- Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey, 08543
| | - Ruth R. Wexler
- Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey, 08543
| |
Collapse
|
29
|
Van Huis CA, Casimiro-Garcia A, Bigge CF, Cody WL, Dudley DA, Filipski KJ, Heemstra RJ, Kohrt JT, Leadley RJ, Narasimhan LS, McClanahan T, Mochalkin I, Pamment M, Thomas Peterson J, Sahasrabudhe V, Schaum RP, Edmunds JJ. Exploration of 4,4-disubstituted pyrrolidine-1,2-dicarboxamides as potent, orally active Factor Xa inhibitors with extended duration of action. Bioorg Med Chem 2009; 17:2501-11. [PMID: 19231206 DOI: 10.1016/j.bmc.2009.01.063] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2008] [Revised: 01/22/2009] [Accepted: 01/26/2009] [Indexed: 11/27/2022]
|
30
|
Eriksson BI, Quinlan DJ, Weitz JI. Comparative Pharmacodynamics and Pharmacokinetics of Oral Direct Thrombin and Factor Xa Inhibitors in Development. Clin Pharmacokinet 2009; 48:1-22. [PMID: 19071881 DOI: 10.2165/0003088-200948010-00001] [Citation(s) in RCA: 363] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Bengt I Eriksson
- Orthopaedics Department, University Hospital Sahlgrenska/Ostra, Gothenburg, Sweden.
| | | | | |
Collapse
|
31
|
McBane RD, Leadley RJ, Baxi SM, Karnicki K, Wysokinski W. Iliac venous stenting: antithrombotic efficacy of PD0348292, an oral direct Factor Xa inhibitor, compared with antiplatelet agents in pigs. Arterioscler Thromb Vasc Biol 2007; 28:413-8. [PMID: 18096830 DOI: 10.1161/atvbaha.107.158691] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The clinical use of venous stents is increasing dramatically. Although antiplatelet agents are required for arterial stent patency, optimal thrombo-prophylaxis after venous stenting remains undefined. To address this issue, PD0348292, a direct Factor Xa inhibitor, was compared with antiplatelet therapy in a porcine venous stent model. METHODS AND RESULTS Four hours before stent deployment, pigs (n=5 to 6 per group) received oral PD0348292 at 0.4, 0.9, 4.3 mg/kg, or 0.4 mg/kg plus aspirin (325 mg). Aspirin, clopidogrel (75 mg), aspirin plus clopidogrel, or vehicle (n=10) were administered daily for 2 days before the procedure. Two hours after stent placement, thrombi were quantified by autologous (111)In-platelet content and weights. Thrombus weight and platelet deposition were significantly reduced by PD0348292 at 0.4 (49+/-79 mg and 110+/-145x10(6)/cm2), 0.9 (5+/-6 mg and 107+/-128x10(6)/cm2), 4.3 mg/kg (0+/-0 mg and 87+/-125x10(6)/cm2), and PD348292 plus aspirin (20+/-40 mg and 157+/-70x10(6)/cm2) compared with vehicle (402+/-226 mg; 584+/-454x10(6)/cm2). Despite prolonging bleeding times and inhibiting platelet aggregation, neither aspirin (567+/-683 mg and 533+/-622x10(6)/cm2), clopidogrel (404+/-349 mg and 178+/-101x10(6)/cm2), nor aspirin plus clopidogrel (247+/-261 mg and 231+/-266x10(6)/cm2) significantly decreased stent thrombosis. CONCLUSIONS PD0348292 completely inhibited thrombosis after venous stenting. Platelet accretion in these venous thrombi appear to involve pathways distinct from arachidonate metabolism or ADP P2Y12 receptor activation.
Collapse
Affiliation(s)
- Robert D McBane
- Section of Hematology Research, Mayo Clinic, 200 First Street, Rochester, MN 55905, USA.
| | | | | | | | | |
Collapse
|