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Nakashima KI, Yamaguchi E, Noritake C, Mitsugi Y, Goto M, Hirai T, Abe N, Sakai E, Oyama M, Itoh A, Inoue M. Discovery and SAR of Natural-Product-Inspired RXR Agonists with Heterodimer Selectivity to PPARδ-RXR. ACS Chem Biol 2020; 15:1526-1534. [PMID: 32374156 DOI: 10.1021/acschembio.0c00146] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A known natural product, magnaldehyde B, was identified as an agonist of retinoid X receptor (RXR) α. Magnaldehyde B was isolated from Magnolia obovata (Magnoliaceae) and synthesized along with more potent analogs for screening of their RXRα agonistic activities. Structural optimization of magnaldehyde B resulted in the development of a candidate molecule that displayed a 440-fold increase in potency. Receptor-ligand docking simulations indicated that this molecule has the highest affinity with the ligand binding domain of RXRα among the analogs synthesized in this study. Furthermore, the selective activation of the peroxisome proliferator-activated receptor (PPAR) δ-RXR heterodimer with a stronger efficacy compared to those of PPARα-RXR and PPARγ-RXR was achieved in luciferase reporter assays using the PPAR response element driven reporter (PPRE-Luc). The PPARδ activity of the molecule was significantly inhibited by the antagonists of both RXR and PPARδ, whereas the activity of GW501516 was not affected by the RXR antagonist. Furthermore, the molecule exhibited a particularly weak PPARδ agonistic activity in reporter gene assays using the Gal4 hybrid system. The obtained data therefore suggest that the weak PPARδ agonistic activity of the optimized molecule is synergistically enhanced by its own RXR agonistic activity, indicating the potent agonistic activity of the PPARδ-RXR heterodimer.
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Jocher B, Nakajima T, Tanaka Y, Fischer I, Schilling J, Ewald G, Itoh A. Incidence and Risk Factors for Acute Kidney Injury Post-Heart Transplant: An Analysis of Peri-Operative Hemodynamics. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Jeevanandam V, Tatooles A, Milano C, Itoh A, Selzman C, Jacoski M, Pagani F, Slaughter M. Early Bleeding is Associated with Increased Length of Stay and Early Death in LVAD Recipients. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.1225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Haft J, Silvestry S, Ransom J, Itoh A, Lowes B, Katz J, Bhama J, Lee S, Rapkin J, Franke A, Estep J. The Impact of HeartMate 3 Speed on Outcomes in the Momentum 3 Clinical Trial. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Tanaka Y, Vu V, Fischer I, Nakajima T, Soyama Y, Jocker B, May-Newman K, Itoh A. Significance of Aortic Valve Insufficiency with Left Ventricular Assist Device: Duration and Regurgitant Flow in a Mock Loop Study. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Oe K, Goto M, Maejima S, Yamaguchi E, Itoh A. Visible Light and Molecular Iodine‐Mediated Diastereoselective Intermolecular Lactonization of Styrenes with Carbonyls. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Goto M, Maejima S, Yamaguchi E, Itoh A. Regioselective Carboiodination of Styrenes:
N
‐Iodosuccinimide Affords Complete Reaction Regioselectivity. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000022] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Itoh A, Yamaguchi E, Goto Y. Synthesis of Indolines via a Photocatalytic Intramolecular Reductive Cyclization Reaction. HETEROCYCLES 2020. [DOI: 10.3987/com-19-s(f)8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Shimbo D, Shibata A, Yudasaka M, Maruyama T, Tada N, Uno B, Itoh A. Synthesis of cis-β-Amidevinyl Benziodoxolones from the Ethynyl Benziodoxolone-Chloroform Complex and Sulfonamides. Org Lett 2019; 21:9769-9773. [PMID: 31742414 DOI: 10.1021/acs.orglett.9b03990] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The synthesis of cis-β-amidevinyl benziodoxolones from the ethynyl benziodoxolone-chloroform complex and sulfonamides is reported. Evidence indicates that highly reactive unsubstituted ethynyl benziodoxolone undergoes Michael addition of sulfonamides, including sterically demanding acyclic amino acid derivatives. The synthesis of selectively deuterated cis-β-amidevinyl benziodoxolones and investigation of ethynyl-λ3-iodane reactivity are also described.
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Ishida S, Suzuki H, Uchida S, Yamaguchi E, Itoh A. Nickel Catalyzed Intermolecular Carbonyl Addition of Aryl Halide. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901367] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Takeda M, Maejima S, Yamaguchi E, Itoh A. Direct lactonization from 1,3-dienes and malonate esters mediated by a combination of iodine and visible light. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.151284] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Kamiya T, Tanaka M, Hara H, Yamaguchi E, Itoh A, Adachi T. Inhibitory effects of 4-hydroperoxy-2-decenoic acid ethyl ester on phorbol ester- and TGF-β1-induced MMPs expression. Free Radic Res 2019; 53:1051-1059. [PMID: 31575304 DOI: 10.1080/10715762.2019.1675874] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Matrix metalloproteinases (MMPs), zinc-containing proteinases, play a critical role in tumour progression by degrading extracellular matrix components. MMP2 and MMP9 are secreted from tumour-associated macrophages as well as tumour cells and have been implicated in the formation of the tumour microenvironment. Therefore, the inhibition of these MMPs may suppress tumour progression and metastasis. 4-Hydroperoxy-2-decenoic acid ethyl ester (HPO-DAEE) is known to cause apoptosis in the human lung cancer cell line A549 by inducing endoplasmic reticulum (ER) stress. However, the effects of HPO-DAEE on tumour progression remain unclear. HPO-DAEE pre-treatment significantly suppressed phorbol 12-myristate 13-acetate (TPA)-triggered MMP activation in human monocytic THP-1 cells. It also enhanced the expression of haem oxygenase-1, an antioxidant enzyme, and suppressed the TPA-triggered intracellular accumulation of reactive oxygen species (ROS). Furthermore, HPO-DAEE suppressed transforming growth factor-β1-triggered human prostate cancer PC3 cell migration and this was accompanied by the inhibition of MMP expression and activities. The present results indicate that HPO-DAEE may exert inhibitory effects on tumour progression by suppressing MMP expression and activities.
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Usami K, Yamaguchi E, Tada N, Itoh A. Transition-Metal-Free Synthesis of Phenanthridinones through Visible-Light-Driven Oxidative C-H Amidation. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900536] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Inagawa H, Uchida S, Yamaguchi E, Itoh A. Metal‐Free Oxidative Amidation of Aromatic Aldehydes using an Anthraquinone‐Based Organophotocatalyst. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900256] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Maejima S, Yamaguchi E, Itoh A. Visible Light/Molecular-Iodine-Mediated Intermolecular Spirolactonization Reaction of Olefins with Cyclic Ketones. J Org Chem 2019; 84:9519-9531. [DOI: 10.1021/acs.joc.9b01081] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Maejima S, Yamaguchi E, Itoh A. trans-Diastereoselective Syntheses of γ-Lactones by Visible Light-Iodine-Mediated Carboesterification of Alkenes. ACS OMEGA 2019; 4:4856-4870. [PMID: 31459670 PMCID: PMC6648839 DOI: 10.1021/acsomega.9b00333] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 02/21/2019] [Indexed: 05/08/2023]
Abstract
This study aims to develop an intermolecular lactonization reaction of alkenes with carbonyls mediated by visible light and molecular iodine. The one-step reaction involved the carboesterification of alkenes to produce the corresponding lactones in moderate to good yield. It was also revealed that it is possible to control the diastereoselectivity of the reaction by altering the base used and the reaction conditions. When water was added as a solvent, the reaction resulted in the formation of lactones with trans-selectivity. A mechanistic investigation was undertaken and it was found that the reaction requires the generation of an iodine radical from molecular iodine, driven by visible light irradiation, and proceeds via the formation of an iodine radical alkene adduct. The proposed reaction is an example of a rare-metal free intermolecular addition cyclization reaction, which is an environment-friendly chemical process that only uses molecular iodine. In addition, since diastereoselectivity was observed without the use of any specific reagents, the developed methodology is an example of a novel stereoselective transformation using only cost-effective reagents.
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Yamaguchi E, Kashima Y, Itoh A. Single-Electron-Transfer-Initiated Sequential Direct Arylation Reaction of Pyrrole with Aryl Diazonium Salts. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201800738] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Yudasaka M, Shimbo D, Maruyama T, Tada N, Itoh A. Synthesis, Characterization, and Reactivity of an Ethynyl Benziodoxolone (EBX)-Acetonitrile Complex. Org Lett 2019; 21:1098-1102. [PMID: 30707031 DOI: 10.1021/acs.orglett.9b00005] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of a crystalline ethynyl-1,2-benziodoxol-3(1 H)-one (EBX)-acetonitrile complex is described. EBX has been widely used as an active species for a variety of reactions; however, its high instability has so far prevented its isolation. The EBX-acetonitrile is self-assembled into a double-layered honeycomb structure through weak hypervalent iodine secondary interactions and hydrogen bonding. The N-ethynylation of a variety of sulfonamides using the EBX-acetonitrile complex as a substrate under mild conditions is also described.
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Yamaguchi E, Taguchi N, Itoh A. Ruthenium polypyridyl complex-catalysed aryl alkoxylation of styrenes: improving reactivity using a continuous flow photo-microreactor. REACT CHEM ENG 2019. [DOI: 10.1039/c9re00061e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Previously, we reported the ruthenium polypyridyl complex-catalysed aryl alkoxylation reaction of styrenes with aryldiazonium salts.
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Yamaguchi E, Tanaka W, Itoh A. Olefin Bifunctionalization: A Visible-light Photoredox-catalyzed Aryl Alkoxylation of Olefins. Chem Asian J 2018; 14:121-124. [DOI: 10.1002/asia.201801211] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 08/29/2018] [Indexed: 12/11/2022]
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Matsuo K, Yamaguchi E, Itoh A. Atom‐Transfer Radical Addition Photocatalysis Using a Heteroleptic Copper Complex. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800533] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Kamiya T, Watanabe M, Hara H, Mitsugi Y, Yamaguchi E, Itoh A, Adachi T. Induction of Human-Lung-Cancer-A549-Cell Apoptosis by 4-Hydroperoxy-2-decenoic Acid Ethyl Ester through Intracellular ROS Accumulation and the Induction of Proapoptotic CHOP Expression. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:10741-10747. [PMID: 30296076 DOI: 10.1021/acs.jafc.8b04424] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Royal jelly, a natural product secreted by honeybees, contains several fatty acids, such as 10-hydroxy-2-decenoic acid (DE), and shows anti- and pro-apoptotic properties. 4-Hydroperoxy-2-decenoic acid ethyl ester (HPO-DAEE), a DE derivative, exhibits potent antioxidative activity; however, it currently remains unclear whether HPO-DAEE induces cancer-cell death. In the present study, treatment with HPO-DAEE induced human-lung-cancer-A549-cell death (52.7 ± 10.2%) that was accompanied by DNA fragmentation. Moreover, the accumulation of intracellular reactive oxygen species (ROS, 2.38 ± 0.1-fold) and the induction of proapoptotic CCAAT-enhancer-binding-protein-homologous-protein (CHOP) expression (18.4 ± 4.0-fold) were observed in HPO-DAEE-treated cells. HPO-DAEE-elicited CHOP expression and cell death were markedly suppressed by pretreatment with N-acetylcysteine (NAC), an antioxidant, by 2.40 ± 1.57-fold and 5.7 ± 1.6%, respectively. Pretreatment with 4-phenylbutyric acid (PBA), an inhibitor of endoplasmic reticulum stress, also suppressed A549-cell death (38.4 ± 1.1%). Furthermore, we demonstrated the involvement of extracellular-signal-regulated protein kinase (ERK) and p38-related signaling in HPO-DAEE-elicited cell-death events. Overall, we concluded that HPO-DAEE induces A549-cell apoptosis through the ROS-ERK-p38 pathway and, at least in part, the CHOP pathway.
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Usami K, Yamaguchi E, Tada N, Itoh A. Visible-Light-Mediated Iminyl Radical Generation from Benzyl Oxime Ether: Synthesis of Pyrroline via Hydroimination Cyclization. Org Lett 2018; 20:5714-5717. [DOI: 10.1021/acs.orglett.8b02429] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Fujiya A, Yamaguchi E, Tada N, Itoh A. A Radical Reaction for the Synthesis of 3-Substituted Dihydrothiopyrans under Photosensitized Conditions. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800159] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Maejima S, Osuka M, Yamaguchi E, Itoh A. Synthesis of bicyclic lactones via I2-mediated intramolecular tandem C–C/C–O bond formation. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.04.081] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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