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Yamaguchi E, Itoh A, Kamito Y, Matsuo K, Ishihara J. Photooxidative Keto-Trifluoromethylation of Styrenes by Means of an Anthraquinone-Based Organocatalyst. SYNTHESIS-STUTTGART 2018. [DOI: 10.1055/s-0036-1592003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
α-Trifluoromethyl ketones are versatile building blocks for the synthesis of various trifluoromethyl-functionalized molecules. Although there are significant advantages in the development of methods toward direct transformations of styrenes into α-trifluoromethyl ketones, most procedures leading to α-trifluoromethyl ketones require heavy- or transition-metal-based complexes. Herein, a novel method is developed for the synthesis of α-trifluoromethyl ketones via anthraquinone-catalyzed photooxidative keto-trifluoromethylation of styrenes with the readily available Langlois reagent (CF3SO2Na) under an oxygen atmosphere. The reactions proceed smoothly to give the products in moderate to excellent yield with good selectivity.
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Deguchi M, Fujiya A, Yamaguchi E, Tada N, Uno B, Itoh A. Organic dye-catalyzed radical ring expansion reaction. RSC Adv 2018; 8:15825-15830. [PMID: 35539500 PMCID: PMC9080073 DOI: 10.1039/c8ra02383b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 04/23/2018] [Indexed: 12/03/2022] Open
Abstract
Herein, we reported an attractive method for synthesizing medium-sized rings that are catalyzed by erythrosine B under fluorescent light irradiation. This synthetic approach featured mild conditions, a facile procedure, a broad substrate scope, and moderate-to-good yields. Herein, we reported an attractive method for synthesizing medium-sized rings that are catalyzed by erythrosine B under fluorescent light irradiation.![]()
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Kotkar K, Anand S, Fischer I, Ewald G, Balsara K, Masood M, Itoh A. Surgical Debridement of Driveline Infection with Uninterrupted Warfarin Anticoagulation is Associated with Reduced Postoperative Bleeding Events, Blood Transfusion and Shorter Hospital Stay. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.934] [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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54
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Rogers J, Milano C, Pamboukian S, Slaughter M, Birks E, Boyce S, Najjar S, Itoh A, Reid B, Mokadam N, Aaronson K, Vassiliades T, Pagani F. Adverse Events and Their Effect on Quality of Life and Functional Capacity in the ENDURANCE and ENDURANCE Supplemental Trials. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.1235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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55
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Asano Y, Nagasawa Y, Yamaguchi E, Itoh A. Aerobic Photooxidative Synthesis of β-Alkoxy Monohydroperoxides Using an Organo Photoredox Catalyst Controlled by a Base. Chem Asian J 2018; 13:409-412. [DOI: 10.1002/asia.201701742] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 01/04/2018] [Indexed: 01/02/2023]
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56
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Yudasaka M, Maruyama T, Yamaguchi E, Tada N, Itoh A. Synthesis, Characterization, and Reaction of a Both Inter- and Intramolecularly Coordinated Pseudocyclic Iodosylbenzene-Trifluoroacetic Acid Complexes. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701521] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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57
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Kawaai K, Yamaguchi T, Yamaguchi E, Endo S, Tada N, Ikari A, Itoh A. Photoinduced Generation of Acyl Radicals from Simple Aldehydes, Access to 3-Acyl-4-arylcoumarin Derivatives, and Evaluation of Their Antiandrogenic Activities. J Org Chem 2018; 83:1988-1996. [DOI: 10.1021/acs.joc.7b02933] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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58
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Maejima S, Yamaguchi E, Itoh A. Front Cover Picture: Intermolecular Tandem Addition/Esterification Reaction of Alkenes with Malonates Leading to γ-Lactones Mediated by Molecular Iodine under Visible Light Irradiation (Adv. Synth. Catal. 22/2017). Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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59
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Maejima S, Yamaguchi E, Itoh A. Intermolecular Tandem Addition/Esterification Reaction of Alkenes with Malonates Leading to γ-Lactones Mediated by Molecular Iodine under Visible Light Irradiation. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700809] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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60
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Inoue Y, Hara H, Mitsugi Y, Yamaguchi E, Kamiya T, Itoh A, Adachi T. 4-Hydroperoxy-2-decenoic acid ethyl ester protects against 6-hydroxydopamine-induced cell death via activation of Nrf2-ARE and eIF2α-ATF4 pathways. Neurochem Int 2017; 112:288-296. [PMID: 28823537 DOI: 10.1016/j.neuint.2017.08.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 07/20/2017] [Accepted: 08/13/2017] [Indexed: 02/05/2023]
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder characterized by progressive degeneration of dopaminergic neurons in the substantia nigra. Oxidative stress has been reported to be closely related to the pathogenesis and worsening of symptoms of PD. One therapeutic strategy is to alleviate neuronal injuries caused by oxidative stress. In this study, we investigated protective effects of royal jelly (RJ) fatty acids and their derivatives on oxidative stress-induced cell death using human neuroblastoma SH-SY5Y cells. 4-Hydroperoxy-2-decenoic acid ethyl ester (HPO-DAEE), a synthesized RJ fatty acid derivative, markedly induced antioxidant enzymes such as heme oxygenase-1 (HO-1). Pretreatment with HPO-DAEE protected against 6-hydroxydopamine (6-OHDA)-induced cell death. NF-E2-related factor 2 (Nrf2), a master regulator of antioxidative responses, plays a key role in the acquisition of resistance to oxidative stress. HPO-DAEE elicited nuclear accumulation of Nrf2 and activated antioxidant response element (ARE), a cis-activating regulatory element, indicating that HPO-DAEE induced expression of antioxidant genes through Nrf2-ARE signaling. Recently, the activating transcription factor-4 (ATF4) has been shown to cooperate with Nrf2 and modulate antioxidant gene expression. We also found that HPO-DAEE promoted phosphorylation of eukaryotic initiation factor 2α (eIF2α), which is an upstream effector of ATF4, and subsequent nuclear accumulation of ATF4. The eIF2α phosphatase inhibitor, salubrinal, augmented HPO-DAEE-induced HO-1 expression and protection against 6-OHDA-induced cell death. These results indicate that HPO-DAEE activates both the Nrf2-ARE and eIF2α-ATF4 pathways. Moreover, ROS generation occurred upon treatment of SH-SY5Y cells with HPO-DAEE, and the antioxidants N-acetylcysteine and glutathione suppressed HPO-DAEE-induced activation of the Nrf2-ARE and eIF2α-ATF4 pathways. Therefore, sublethal oxidative stress caused by HPO-DAEE is likely to activate both these pathways. Taken together, we conclude that HPO-DAEE elicits adaptive responses to oxidative stress through cooperative activation of the Nrf2-ARE and eIF2α-ATF4 pathways.
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Balsara K, Jolliff L, Masood M, Itoh A. Negative Pressure Dressings Reduce the Incidence of Driveline Infections Following LVAD Implantation. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.687] [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] Open
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62
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Itoh A, Pisani M, Baltalzar M, Balsara K, Masood M, Tepper S, Han J, Ranney D, Daneshmand M, Sun B, Kai M, Camacho M, Takayama H. Clinical Benefits and Complications in Patients with Percutaneous VAD versus Surgical LV Vent with ECLS: Multicenter REgiStry for Cardiogenic Shock - Utilization and Efficacy of Device Therapy (RESCUE). J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.1258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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63
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Takayama H, Han J, Baltazar-Garcia M, Lucas M, Kai M, Camacho M, Sun B, Ranney D, Daneshmand M, Itoh A. Contemporary ECMO Therapy for Postcardiotomy Shock: From REgiStry for Cardiogenic Shock: Utility and Efficacy of Device Therapy (RESCUE). J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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64
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Balsara K, Jolliff L, Masood M, Itoh A. Prolonged Ventilator Dependence Following LVAD Implant Is an Independent Predictor of Reduced Survival. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.1245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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65
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Sudo Y, Yamaguchi E, Itoh A. Photo-oxidative Cross-Dehydrogenative Coupling-Type Reaction of Thiophenes with α-Position of Carbonyls Using a Catalytic Amount of Molecular Iodine. Org Lett 2017; 19:1610-1613. [DOI: 10.1021/acs.orglett.7b00428] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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66
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Yamaguchi T, Yamaguchi E, Itoh A. Cross-Dehydrogenative C–H Amination of Indoles under Aerobic Photo-oxidative Conditions. Org Lett 2017; 19:1282-1285. [DOI: 10.1021/acs.orglett.7b00026] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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67
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Yamaguchi T, Sugiura Y, Yamaguchi E, Tada N, Itoh A. Synthetic Method for the Preparation of Quinazolines by the Oxidation of Amines Using Singlet Oxygen. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600431] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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68
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Yamaguchi E, Sudo Y, Tada N, Itoh A. Rare Metal-Free Photo-Aerobic Intramolecular Dehydrogenative Cyclization Reaction towards Polycyclic Heteroarenes. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600291] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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69
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Takeda K, Goto H, Hirooka Y, Itoh A, Hashimoto S, Niwa K, Hayakawa T. Contrast-enhanced transabdominal ultrasonography in the diagnosis of pancreatic mass lesions. Acta Radiol 2016. [DOI: 10.1258/rsmacta.44.1.103] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Purpose: In this study, we evaluated the diagnostic usefulness of contrast-enhanced transabdominal ultrasonography (CE-US) in pancreatic mass lesions that could be detected by US. Material and Methods: CE-US was performed in 37 patients with various pancreatic mass lesions to evaluate the characteristic vascular findings. Results: Pancreatic tubular adenocarcinoma showed negative enhancement pattern in 16 cases and a slight spotty enhancement pattern in 5 cases. Poorly differentiated adenocarcinoma showed slight homogeneous enhancement pattern in 1 case and acinar cell carcinoma was expressed as a heterogeneous enhancement pattern in 3 cases on CE-US. Endocrine cell tumor had a strong homogeneous enhancement pattern in 3 cases, a strong central enhancement in 1 case and a strong peripheral enhancement in 2 cases. Pseudotumorous pancreatitis showed an iso-enhancement pattern in 6 cases. Conclusion: CE-US is useful in evaluating the vascularity of the lesions in various pancreatic mass lesions in real-time images, and may be useful for the differential diagnosis of pancreatic mass lesions.
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Itoh A, Omura R, Fujiya A, Yamaguchi E, Tada N, Miura T. One-Pot Aerobic Photooxidative Darzens Reaction from Styrene and Benzyl Alcohol via Phenacyl Iodide and Benzaldehyde by Using Iodine. SYNTHESIS-STUTTGART 2016. [DOI: 10.1055/s-0035-1562455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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71
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Fujiya A, Tanaka M, Yamaguchi E, Tada N, Itoh A. Sequential Photo-oxidative [3 + 2] Cycloaddition/Oxidative Aromatization Reactions for the Synthesis of Pyrrolo[2,1-a]isoquinolines Using Molecular Oxygen as the Terminal Oxidant. J Org Chem 2016; 81:7262-70. [DOI: 10.1021/acs.joc.6b00439] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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72
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Itoh A, Matsuzawa K, Nagasawa Y, Yamaguchi E, Tada N. An Efficient Aziridination of Styrenes Promoted by Visible Light. SYNTHESIS-STUTTGART 2016. [DOI: 10.1055/s-0035-1561635] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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73
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Makino J, Ogasawara R, Kamiya T, Hara H, Mitsugi Y, Yamaguchi E, Itoh A, Adachi T. Royal Jelly Constituents Increase the Expression of Extracellular Superoxide Dismutase through Histone Acetylation in Monocytic THP-1 Cells. JOURNAL OF NATURAL PRODUCTS 2016; 79:1137-1143. [PMID: 27049436 DOI: 10.1021/acs.jnatprod.6b00037] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Extracellular superoxide dismutase (EC-SOD) is one of the main SOD isozymes and plays an important role in the prevention of cardiovascular diseases by accelerating the dismutation reaction of superoxide. Royal jelly includes 10-hydroxy-2-decenoic acid (10H2DA, 2), which regulates the expression of various types of genes in epigenetics through the effects of histone deacetylase (HDAC) antagonism. The expression of EC-SOD was previously reported to be regulated epigenetically through histone acetylation in THP-1 cells. Therefore, we herein evaluated the effects of the royal jelly constituents 10-hydroxydecanoic acid (10HDA, 1), sebacic acid (SA, 3), and 4-hydroperoxy-2-decenoic acid ethyl ester (4-HPO-DAEE, 4), which is a derivative of 2, on the expression of EC-SOD in THP-1 cells. The treatment with 1 mM 1, 2, or 3 or 100 μM 4 increased EC-SOD expression and histone H3 and H4 acetylation levels. Moreover, the enrichment of acetylated histone H4 was observed in the proximal promoter region of EC-SOD and was caused by the partial promotion of ERK phosphorylation (only 4) and inhibition of HDAC activities, but not by the expression of HDACs. Overall, 4 exerted stronger effects than 1, 2, or 3 and has potential as a candidate or lead compound against atherosclerosis.
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Byku M, Piotrowski R, Itoh A, Larue S, Vader J, Holley C, Ewald G. Pre-Extra Corporeal Membrane Oxygenation (ECMO) MELD Score May Predict Meaningful Survival. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.1097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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75
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Taghavi S, Tandon D, Diamant A, Keith A, Ewald G, Lawrence S, Masood M, Balsara K, Itoh A. Surgical Management of Driveline Infection in Continuous Flow Left Ventricular Assist Devices. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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