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Mochihara K, Morimoto T, Ota K, Marumoto S, Hashizume D, Matsuo T. Approach to the "Missing" Diarylsilylene: Formation, Characterization, and Intramolecular C-H Bond Activation of Blue Diarylsilylenes with Bulky Rind Groups. Int J Mol Sci 2024; 25:3761. [PMID: 38612569 PMCID: PMC11011690 DOI: 10.3390/ijms25073761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 03/23/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024] Open
Abstract
The treatment of the bulky Rind-based dibromosilanes, (Rind)2SiBr2 (2) [Rind = 1,1,7,7-tetra-R1-3,3,5,5-tetra-R2-s-hydrindacen-4-yl: EMind (a: R1 = Et, R2 = Me) and Eind (b: R1 = R2 = Et)], with two equivalents of tBuLi in Et2O at low temperatures resulted in the formation of blue solutions derived from the diarylsilylenes, (Rind)2Si: (3). Upon warming the solutions above -20 °C, the blue color gradually faded, accompanying the decomposition of 3 and yielding cyclic hydrosilanes (4) via intramolecular C-H bond insertion at the Si(II) center. The molecular structures of the bulky Eind-based 3b and 4b were confirmed by X-ray crystallography. Thus, at -20 °C, blue crystals were formed (Crystal-A), which were identified as mixed crystals of 3b and 4b. Additionally, colorless crystals of 4b as a singular component were isolated (Crystal-B), whose structure was also determined by an X-ray diffraction analysis. Although the isolation of 3 was difficult due to their thermally labile nature, their structural characteristics and electronic properties were discussed based on the experimental findings complemented by computational results. We also examined the hydrolysis of 3b to afford the silanol, (Eind)2SiH(OH) (5b).
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Grants
- JP20109003, JP15H00964, JP15H03788, 18K05160, 21K05091, 22K20561 Japan Society for the Promotion of Science
- #2016-94, #2017-99, #2018-110, #2019-120, #2020-126, #2021-130, #2022-134 Collaborative Research Program of The Institute for Chemical Research, Kyoto University
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Affiliation(s)
- Kazuki Mochihara
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka 577-8502, Osaka, Japan; (K.M.); (T.M.); (K.O.)
| | - Tatsuto Morimoto
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka 577-8502, Osaka, Japan; (K.M.); (T.M.); (K.O.)
| | - Kei Ota
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka 577-8502, Osaka, Japan; (K.M.); (T.M.); (K.O.)
| | - Shinsuke Marumoto
- Joint Research Center, Kindai University, 3-4-1 Kowakae, Higashi-Osaka 577-8502, Osaka, Japan;
| | - Daisuke Hashizume
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako 351-0198, Saitama, Japan
| | - Tsukasa Matsuo
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka 577-8502, Osaka, Japan; (K.M.); (T.M.); (K.O.)
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2
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Takashima K, Nakamura S, Nagayama M, Marumoto S, Ishikawa F, Xie W, Nakanishi I, Muraoka O, Morikawa T, Tanabe G. Role of the thiosugar ring in the inhibitory activity of salacinol, a potent natural α-glucosidase inhibitor. RSC Adv 2024; 14:4471-4481. [PMID: 38312722 PMCID: PMC10835759 DOI: 10.1039/d3ra08485j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 01/23/2024] [Indexed: 02/06/2024] Open
Abstract
Herein, ring-cleaved (24) and truncated (25) analogues of an azasugar, 1-deoxynojirimycin (23), exhibited inhibitory activity (Ki = 4-10 μM) equal to that of the parent compound (1, Ki = 14 μM). Based on this structure-activity relationship (SAR), four ring-cleaved (26a-26c and 27c) and three truncated (28a-28c) analogues of salacinol (1), a potent thiosugar-ring-containing α-glucosidase inhibitor, were synthesised. Bioassay results revealed that all the synthetics were inactive, indicating that the 5-membered thiosugar ring of 1 played an essential role in the potent activities of sulfonium-type inhibitors. The present findings are interesting and important in understanding the function of salacinol, considering that the observed inhibitory activity trend was contrary to the SAR observed in aza-compounds (23, 24, and 25) in a previous study, which suggested that the cyclic structure did not contribute to their strong inhibitory activity.
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Affiliation(s)
- Katsuki Takashima
- Faculty of Pharmacy, Kindai University 3-4-1 Kowakae, Higashi-osaka Osaka 577-8502 Japan
| | - Shinya Nakamura
- Faculty of Pharmacy, Kindai University 3-4-1 Kowakae, Higashi-osaka Osaka 577-8502 Japan
| | - Maiko Nagayama
- Faculty of Pharmacy, Kindai University 3-4-1 Kowakae, Higashi-osaka Osaka 577-8502 Japan
| | - Shinsuke Marumoto
- Joint Research Centre, Kindai University 3-4-1 Kowakae, Higashi-osaka Osaka 577-8502 Japan
| | - Fumihiro Ishikawa
- Faculty of Pharmacy, Kindai University 3-4-1 Kowakae, Higashi-osaka Osaka 577-8502 Japan
| | - Weijia Xie
- State Key Laboratory of Natural Medicines, Department of Medicinal Chemistry, China Pharmaceutical University Nanjing 2100009 P. R. China
| | - Isao Nakanishi
- Faculty of Pharmacy, Kindai University 3-4-1 Kowakae, Higashi-osaka Osaka 577-8502 Japan
| | - Osamu Muraoka
- Pharmaceutical Research and Technology Institute, Kindai University 3-4-1 Kowakae, Higashi-osaka Osaka 577-8502 Japan
| | - Toshio Morikawa
- Pharmaceutical Research and Technology Institute, Kindai University 3-4-1 Kowakae, Higashi-osaka Osaka 577-8502 Japan
| | - Genzoh Tanabe
- Faculty of Pharmacy, Kindai University 3-4-1 Kowakae, Higashi-osaka Osaka 577-8502 Japan
- Pharmaceutical Research and Technology Institute, Kindai University 3-4-1 Kowakae, Higashi-osaka Osaka 577-8502 Japan
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3
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Takashima K, Asai A, Ashidate M, Suzuki R, Marumoto S, Ishikawa F, Morikawa T, Tanabe G. Total Synthesis of Calanthoside, a Potential Hair Growth Stimulant: A Facile Synthetic Approach via One-Pot S- and O-Glucosidic Bond Formation. J Nat Prod 2023; 86:2672-2684. [PMID: 37964561 DOI: 10.1021/acs.jnatprod.3c00815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
The first total synthesis of calanthoside (1), which exhibits potent proliferative activity against human hair follicle dermal papilla cells, has been achieved in seven steps with an overall yield of 43% on a gram scale starting from anthranilic acid (11). The synthetic strategy features a one-pot process involving thioglucoside bond formation via nucleophilic substitution reaction and enol-glucosylation for building the S-,O-bisdesmoside structure of 1. Moreover, the one-pot reaction showed broad substrate adaptability to several sugar donors other than d-glucose, thus affording S,O-bisglycoside intermediates in ∼84% yield.
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4
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Ishikawa F, Tsukumo N, Morishita E, Asamizu S, Kusuhara S, Marumoto S, Takashima K, Onaka H, Tanabe G. Biosynthetic diversification of non-ribosomal peptides through activity-based protein profiling of adenylation domains. Chem Commun (Camb) 2023; 59:9473-9476. [PMID: 37477345 DOI: 10.1039/d3cc02633g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/22/2023]
Abstract
We describe activity-based protein profiling for analyzing the adenylation domains of non-ribosomal peptide synthetases (ABPP-NRPS) in bacterial proteomes. Using a range of non-proteoinogenic amino acid sulfamoyladenosines, the competitive format of ABPP-NRPS provided substrate tolerance toward non-proteinogenic amino acids. When coupled with precursor-directed biosynthesis, a non-proteinogenic amino acid (O-allyl-L-serine) was successfully incorporated into gramicidin S.
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Affiliation(s)
- Fumihiro Ishikawa
- Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan.
| | - Natsumi Tsukumo
- Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan.
| | - Erika Morishita
- Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan.
| | - Shumpei Asamizu
- Graduate School of Agricultural and Life Sciences and Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, 1-1-1 Yayoi, Bunkyo, Tokyo 113-8657, Japan
| | - Saaya Kusuhara
- Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan.
| | - Shinsuke Marumoto
- Joint Research Center, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan
| | - Katsuki Takashima
- Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan.
| | - Hiroyasu Onaka
- Graduate School of Agricultural and Life Sciences and Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, 1-1-1 Yayoi, Bunkyo, Tokyo 113-8657, Japan
| | - Genzoh Tanabe
- Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan.
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5
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Okuno K, Torimoto K, Kuroda R, Cicalese SM, Okuno Y, Kono R, Marumoto S, Utsunomiya H, Eguchi S. Infused juice concentrate of Japanese plum Prunus mume attenuates inflammatory vascular remodeling in a mouse model of hypertension induced by angiotensin II. Hypertens Res 2023; 46:1923-1933. [PMID: 37308550 DOI: 10.1038/s41440-023-01332-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/20/2023] [Accepted: 05/13/2023] [Indexed: 06/14/2023]
Abstract
Fruit from the Prunus mume tree is a traditional food in Japan. Recently, bainiku-ekisu, an infused juice concentrate of Japanese Prunus mume, is attracting attention as a health promoting supplement. Angiotensin II (Ang II) plays a central role in development of hypertension. It has been reported that bainiku-ekisu treatment attenuates the growth-promoting signaling induced by Ang II in vascular smooth muscle cells. However, whether bainiku-ekisu has any effect on an animal model of hypertension remains unknown. Therefore, this study was designed to explore the potential anti-hypertensive benefit of bainiku-ekisu utilizing a mouse model of hypertension with Ang II infusion. Male C57BL/6 mice were infused with Ang II for 2 weeks and given 0.1% bainiku-ekisu containing water or normal water for 2 weeks with blood pressure evaluation. After 2 weeks, mice were euthanized, and the aortas were collected for evaluation of remodeling. Aortic medial hypertrophy was observed in control mice after Ang II infusion, which was attenuated in bainiku-ekisu group with Ang II infusion. Bainiku-ekisu further attenuated aortic induction of collagen producing cells and immune cell infiltration. Development of hypertension induced by Ang II was also prevented by bainiku-ekisu. Echocardiograph indicated protection of Ang II-induced cardiac hypertrophy by bainiku-ekisu. In vascular fibroblasts, bainiku-ekisu attenuated vascular cell adhesion molecule-1 induction, an endoplasmic reticulum stress marker, inositol requiring enzyme-1α phosphorylation, and enhancement in glucose consumption in response to Ang II. In conclusion, Bainiku-ekisu prevented Ang II-induced hypertension and inflammatory vascular remodeling. Potential cardiovascular health benefit to taking bainiku-ekisu should be further studied.
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Affiliation(s)
- Keisuke Okuno
- Department of Cardiovascular Science, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Keiichi Torimoto
- Department of Cardiovascular Science, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Ryohei Kuroda
- Department of Cardiovascular Science, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Stephanie M Cicalese
- Department of Cardiovascular Science, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Yoshiharu Okuno
- National Institute of Technology, Wakayama College, Gobo, Japan
| | - Ryohei Kono
- Department of Rehabilitation, Osaka Kawasaki Rehabilitation University, Kaizuka, Osaka, Japan
| | | | - Hirotoshi Utsunomiya
- Department of Rehabilitation, Osaka Kawasaki Rehabilitation University, Kaizuka, Osaka, Japan.
| | - Satoru Eguchi
- Department of Cardiovascular Science, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA.
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6
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Sekiguchi F, Koike N, Shimada Y, Sugimoto K, Masuda H, Nakamura T, Yamaguchi H, Tanabe G, Marumoto S, Kasanami Y, Tsubota M, Ohkubo T, Yoshida S, Kawabata A. A hydrolysate of poly-trans-[(2-carboxyethyl)germasesquioxane] (Ge-132) suppresses Ca v3.2-dependent pain by sequestering exogenous and endogenous sulfide. Redox Biol 2023; 59:102579. [PMID: 36563535 PMCID: PMC9800310 DOI: 10.1016/j.redox.2022.102579] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 12/05/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
Poly-trans-[(2-carboxyethyl)germasesquioxane] (Ge-132), an organogermanium, is hydrolyzed to 3-(trihydroxygermyl)propanoic acid (THGP) in aqueous solutions, and reduces inflammation, pain and cancer, whereas the underlying mechanisms remain unknown. Sulfides including H2S, a gasotransmitter, generated from l-cysteine by some enzymes including cystathionine-γ-lyase (CSE), are pro-nociceptive, since they enhance Cav3.2 T-type Ca2+ channel activity expressed in the primary afferents, most probably by canceling the channel inhibition by Zn2+ linked via coordinate bonding to His191 of Cav3.2. Given that germanium is reactive to sulfur, we tested whether THGP would directly trap sulfide, and inhibit sulfide-induced enhancement of Cav3.2 activity and sulfide-dependent pain in mice. Using mass spectrometry and 1H NMR techniques, we demonstrated that THGP directly reacted with sulfides including Na2S and NaSH, and formed a sulfur-containing reaction product, which decreased in the presence of ZnCl2. In Cav3.2-transfected HEK293 cells, THGP inhibited the sulfide-induced enhancement of T-type Ca2+ channel-dependent membrane currents. In mice, THGP, administered systemically or locally, inhibited the mechanical allodynia caused by intraplantar Na2S. In the mice with cyclophosphamide-induced cystitis and cerulein-induced pancreatitis, which exhibited upregulation of CSE in the bladder and pancreas, respectively, systemic administration of THGP as well as a selective T-type Ca2+ channel inhibitor suppressed the cystitis-related and pancreatitis-related visceral pain. These data suggest that THGP traps sulfide and inhibits sulfide-induced enhancement of Cav3.2 activity, leading to suppression of Cav3.2-dependent pain caused by sulfide applied exogenously and generated endogenously.
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Affiliation(s)
- Fumiko Sekiguchi
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Kowakae 3-4-1, Higashi-Osaka, 577-8502, Japan
| | - Nene Koike
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Kowakae 3-4-1, Higashi-Osaka, 577-8502, Japan
| | - Yasuhiro Shimada
- Asai Germanium Research Institute Co., Ltd., Suzuranoka, Hakodate, Hokkaido, 042-0958, Japan
| | - Kaho Sugimoto
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Kowakae 3-4-1, Higashi-Osaka, 577-8502, Japan
| | - Hiroshi Masuda
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Kowakae 3-4-1, Higashi-Osaka, 577-8502, Japan
| | - Takashi Nakamura
- Asai Germanium Research Institute Co., Ltd., Suzuranoka, Hakodate, Hokkaido, 042-0958, Japan
| | - Hiroaki Yamaguchi
- Yamagata University Graduate School of Medicine, Iida-nishi 2-2-2, Yamagata, 990-9585, Japan; Department of Pharmacy, Yamagata University Hospital, Iida-nishi 2-2-2, Yamagata, 990-9585, Japan
| | - Genzoh Tanabe
- Laboratory of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, 577-8502, Japan
| | - Shinsuke Marumoto
- Joint Research Center, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, 577-8502, Japan
| | - Yoshihito Kasanami
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Kowakae 3-4-1, Higashi-Osaka, 577-8502, Japan
| | - Maho Tsubota
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Kowakae 3-4-1, Higashi-Osaka, 577-8502, Japan
| | - Tsuyako Ohkubo
- Division of Basic Medical Sciences and Fundamental Nursing, Faculty of Nursing, Fukuoka Nursing College, Fukuoka, 814-0193, Japan
| | - Shigeru Yoshida
- Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, 577-8502, Japan
| | - Atsufumi Kawabata
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Kowakae 3-4-1, Higashi-Osaka, 577-8502, Japan.
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7
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Takashima K, Teramachi M, Marumoto S, Ishikawa F, Manse Y, Morikawa T, Tanabe G. Structure–activity relationship study of 4,5-didehydroguadiscine, an aporphine alkaloid showing potent melanogenesis-inhibitory activity in B16 melanoma cells. Bioorg Med Chem Lett 2022; 78:129034. [DOI: 10.1016/j.bmcl.2022.129034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 10/03/2022] [Accepted: 10/17/2022] [Indexed: 11/02/2022]
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Okuno K, Torimoto K, Kuroda R, Cicalese S, Okuno Y, Kono R, Marumoto S, Utsunomiya H, Eguchi S. Fruit‐juice Concentrate of Asian Plum Attenuates Vascular Remodeling Associated with Hypertension. FASEB J 2022. [DOI: 10.1096/fasebj.2022.36.s1.r4531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Keiichi Torimoto
- Cardiovascular Research Center at Lewis Katz School of MedicineTemple UniversityPhiladelphiaPA
| | - Ryohei Kuroda
- Cardiovascular Research Center at Lewis Katz School of MedicineTemple UniversityPhiladelphiaPA
| | - Stephanie Cicalese
- Cardiovascular Research Center at Lewis Katz School of MedicineTemple UniversityPhiladelphiaPA
| | | | | | | | | | - Satoru Eguchi
- Cardiovascular Research Center at Lewis Katz School of MedicineTemple UniversityPhiladelphiaPA
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Kuroda R, Okuno K, Cicalese SM, Ueda Y, Okuno Y, Kono R, Utsunomiya H, Marumoto S, Eguchi S. Abstract P218: Ume (
Prunus Mume
) Attenuates Er Stress And Inflammation In Rat Vascular Smooth Muscle Cells. Hypertension 2021. [DOI: 10.1161/hyp.78.suppl_1.p218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Ume (
Prunus mume
), is a traditional and familiar food in Asian countries, and is most often pickled or used to make wine and juice concentrate. Recently, Ume is attracting attention as a health food. We previously reported that Ume attenuates the activation of EGFR-ERK cascade and ROS production induced by angiotensin II (Ang II) in vascular smooth muscle cells (VSMC) of thoracic aorta. However, how Ume works on vascular inflammation and ER stress still remains unknown. AngII may enhance inflamm-aging via ER stress contributing to arterial stiffness and hypertension.We used primary culture of rat VSMC for experiment. We obtained 5 fractions (methanol, hexane, dichloromethane, ethyl acetate, and water) extracted from Ume juice. VSMC were pretreated with each fraction for 30 minutes followed by Ang II or tumor necrosis factor (TNF)-α stimulation. Stimulation period was 24 and 48 hours for Ang II, 6 hours for TNF-α. As the preliminary screening, we tested the cell response and solubility of each fraction (n=1~2). Pretreatment with 500μg/mL hexane fraction (PMF-H) showed the tendency to decrease VCAM1 expression under Ang II condition. PMF-H was completely soluble in the media at the concentration of 150 μg/mL. Based on this result, we focused on 150μg/mL PMF-H. DMSO was used as vehicle. In Western blot analysis, PMF-H attenuates ATF6 expression under both AII (p=0.0351, n=5) and TNF-α (p=0.0199, n=5) condition compared to vehicle. VCAM1 expression was significantly enhanced by Ang II stimulation (p=0.0471, n=5), and attenuated by PMF-H. PMF-H also reduced VCAM1 expression under TNF-α stimulation compared to vehicle (p=0.0377, n=5). GRP78 and Crystallin AB did not show any significant change. ATF6 and VCAM1 are key modulators of ER stress and vascular inflammation that may lead to cellular aging. Our results indicate PMF-H attenuates ATF6 and VCAM1 induced by Ang II or TNF-α stimulation. Thus, identification of the active ingredient in hexane fraction of Ume is desired as it may constitute a good candidate for a supplement or drug for anti-inflamm-aging therapy.
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Affiliation(s)
| | | | | | - Yuriko Ueda
- National Institute of Technology, Wakayama College, Gobo, Japan
| | - Yoshiharu Okuno
- National Institute of Technology, Wakayama College, Gobo, Japan
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Ishikawa F, Hirano A, Yoshimori Y, Nishida K, Nakamura S, Takashima K, Marumoto S, Ninomiya K, Nakanishi I, Xie W, Morikawa T, Muraoka O, Tanabe G. Ligand compatibility of salacinol-type α-glucosidase inhibitors toward the GH31 family. RSC Adv 2021; 11:3221-3225. [PMID: 35424309 PMCID: PMC8694024 DOI: 10.1039/d0ra10038b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 12/28/2020] [Indexed: 11/21/2022] Open
Abstract
We show that salacinol-type α-glucosidase inhibitors are ligand-compatible with the GH 31 family. Salacinol and its 3′-O-benzylated analogs inhibit human lysosomal α-glucosidase at submicromolar levels. Simple structure-activity relationship studies reveal that the salacinol side-chain stereochemistry significantly influences binding to GH31 α-glucosidases. Salacinol-type α-glucosidase inhibitors are ligand-compatible with the GH 31 family. Salacinol and its 3′-O-benzylated analogs inhibit human lysosomal α-glucosidase at submicromolar levels.![]()
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Affiliation(s)
- Fumihiro Ishikawa
- Pharmaceutical Organic Chemistry Lab, Faculty of Pharmacy, Kindai University 3-4-1 Kowakae Higashi-Osaka Osaka 577-8502 Japan
| | - Aiko Hirano
- Pharmaceutical Organic Chemistry Lab, Faculty of Pharmacy, Kindai University 3-4-1 Kowakae Higashi-Osaka Osaka 577-8502 Japan
| | - Yuuto Yoshimori
- Pharmaceutical Organic Chemistry Lab, Faculty of Pharmacy, Kindai University 3-4-1 Kowakae Higashi-Osaka Osaka 577-8502 Japan
| | - Kana Nishida
- Pharmaceutical Organic Chemistry Lab, Faculty of Pharmacy, Kindai University 3-4-1 Kowakae Higashi-Osaka Osaka 577-8502 Japan
| | - Shinya Nakamura
- Computational Drug Design and Discovery Lab, Faculty of Pharmacy, Kindai University 3-4-1 Kowakae Higashi-Osaka Osaka 577-8502 Japan
| | - Katsuki Takashima
- Pharmaceutical Organic Chemistry Lab, Faculty of Pharmacy, Kindai University 3-4-1 Kowakae Higashi-Osaka Osaka 577-8502 Japan
| | - Shinsuke Marumoto
- Joint Research Center, Kindai University 3-4-1 Kowakae Higashi-Osaka Osaka 577-8502 Japan
| | - Kiyofumi Ninomiya
- Pharmaceutical Research and Technology Institute, Kindai University 3-4-1 Kowakae Higashi-Osaka Osaka 577-8502 Japan
| | - Isao Nakanishi
- Computational Drug Design and Discovery Lab, Faculty of Pharmacy, Kindai University 3-4-1 Kowakae Higashi-Osaka Osaka 577-8502 Japan
| | - Weijia Xie
- State Key Laboratory of Natural Medicines, Department of Medicinal Chemistry, China Pharmaceutical University Nanjing 2100009 P. R. China
| | - Toshio Morikawa
- Pharmaceutical Research and Technology Institute, Kindai University 3-4-1 Kowakae Higashi-Osaka Osaka 577-8502 Japan
| | - Osamu Muraoka
- Pharmaceutical Research and Technology Institute, Kindai University 3-4-1 Kowakae Higashi-Osaka Osaka 577-8502 Japan
| | - Genzoh Tanabe
- Pharmaceutical Organic Chemistry Lab, Faculty of Pharmacy, Kindai University 3-4-1 Kowakae Higashi-Osaka Osaka 577-8502 Japan.,Pharmaceutical Research and Technology Institute, Kindai University 3-4-1 Kowakae Higashi-Osaka Osaka 577-8502 Japan
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11
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Umegaki K, Yokotani K, Marumoto S, Miyazawa M. Identification of Compounds in Coleus forskohlii Extract Involved in the Induction of Hepatic CYP and Fatty Liver in Mice. J Oleo Sci 2020; 68:995-1002. [PMID: 31582668 DOI: 10.5650/jos.ess19124] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Coleus forskohlii extract (CFE), a popular weight-loss herbal product, induces hepatic cytochrome P450 (CYP) and fatty liver in mice; however, its main bioactive ingredient, forskolin, does not show such effects. To ensure the safety of CFE as a dietary supplement, identification of the compounds implicated in the induction of hepatic CYP and fatty liver is required. In this study, we separated a crude CFE extract into 5 fractions (Fr.) by column chromatography and administered the fractions to mice for one week to assess their ability to induce CYP and fatty liver. CYP induction was detected for all fractions, indicating that many compounds may be involved in CYP induction, while fatty liver was only detected for Fr. 2. Further isolation and purification of Fr. 2 by column chromatography identified 14-deoxycoleon U as a major compound and crocetin dialdehyde as a pigment compound. An in vivo mouse study revealed that crocetin dialdehyde had no effect on the liver and, as 14-deoxycoleon U was the major compound in Fr. 2, it is likely that the active compound inducing fatty liver in CFE is 14-deoxycoleon U. These findings will facilitate the preparation of standardized safe CFE ingredients for dietary supplements.
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Affiliation(s)
- Keizo Umegaki
- Department of Food Safety and Management, Showa Women's University
| | - Kaori Yokotani
- Department of Food Safety and Management, Showa Women's University
| | | | - Mitsuo Miyazawa
- Department of Applied Chemistry, Kindai University.,Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology
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12
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Marumoto S, Okuno Y, Hagiwara Y, Miyazawa M. Biotransformation of (+)-Carvone and (-)-Carvone by the Common Cutworm Spodoptera litura Larvae. J Oleo Sci 2018; 67:1253-1257. [PMID: 30210079 DOI: 10.5650/jos.ess18105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Biotransformation of (+)- and (-)-carvone (1 and 2) by the larvae of common cutworm (Spodoptera litura) has been investigated. (+)-Carvone was transformed to (+)-(4S)-10-hydroxycarvone (1-1), (+)-(4S)-7- hydroxycarvone (1-2), and (-)-(4S)-8,9-dihydroxy-8,9-dihydrocarvone (1-3). (-)-Carvone (2) was transformed to (-)-(4R)-10-hydroxycarvone (2-1), (-)-(4R)-7-hydroxycarvone (2-2), (+)-(4R)-8,9-dihydroxy-8,9- dihydrocarvone (2-3), and (-)-(2R,4R)-10-hydroxycarveol (2-4). The results indicate that the main metabolic reaction of carvones by S. litura larvae is oxidation at vinyl group (C-8 and C-9).
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Affiliation(s)
| | - Yoshiharu Okuno
- Department of Applied Chemistry and Biochemistry, National Institute of Technology, Wakayama College
| | - Yuki Hagiwara
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University
| | - Mitsuo Miyazawa
- Graduate School of Materials Science, Nara Institute of Science and Technology.,Graduate School of Science, Osaka City University.,Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University
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13
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Tanabe G, Manse Y, Ogawa T, Sonoda N, Marumoto S, Ishikawa F, Ninomiya K, Chaipech S, Pongpiriyadacha Y, Muraoka O, Morikawa T. Total Synthesis of γ-Alkylidenebutenolides, Potent Melanogenesis Inhibitors from Thai Medicinal Plant Melodorum fruticosum. J Org Chem 2018; 83:8250-8264. [PMID: 29972303 DOI: 10.1021/acs.joc.8b00986] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A hitherto unreported member of γ-alkylidenebutenolides in Melodorum fruticosum (Annonaceae), (4 E)-6-benzoyloxy-7-hydroxy-2,4-heptadiene-4-olide, named as isofruticosinol (4) was isolated from the methanol extract of flowers, along with the known related butenolides, namely, the (4 Z)-isomer (3) of 4, melodrinol (1), and its (4 E)-isomer (2). To unambiguously determine the absolute configuration at the C-6 position in these butenolides, the first total syntheses of both enantiomers of 2-4 were achieved over 6-7 steps from commercially available D- or L-ribose (D- and L-5). Using the same protocol, both enantiomers of 1 were also synthesized. Based on chiral HPLC analysis of all synthetic compounds ( S- and R-1-4), all naturally occurring butenolides were assigned as partial racemic mixtures with respect to the chiral center at C-6 (enantiomeric ratio, 6 S/6 R = ∼83/17). Furthermore, the melanogenesis inhibitory activities of S- and R-1-4 were evaluated, with all shown to be potent inhibitors with IC50 values in the range 0.29-2.9 μM, regardless of differences in the stereochemistry at C-6. In particular, S-4 (IC50 = 0.29 μM) and R-4 (0.39 μM) showed potent inhibitory activities compared with that of reference standard arbutin (174 μM).
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14
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Abstract
The biotransformation of (+)-isofraxinellone (1) by Aspergillus niger was investigated. Compound 1 was transformed to only one new compound 2. The structure of 2 was identified as (-)-(4S)-4-hydroxyisofraxinellone which was regio- and stereo-selective hydroxylated at the C-4 position by IR, EI-MS 1D and 2D NMR. Absolute configuration of hydroxyl group at the C-4 position was detected by modified Mosher's method. Antifeedant activity of compounds 1 and 2 against larvae of Spodoptera litura was assayed. These compounds showed potent antifeedant activity and ED50 (50% of effective dose) values were 3.91 and 4.43 μg/cm2, respectively.
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Affiliation(s)
- Yoshiharu Okuno
- a Department of Applied Chemistry and Biochemistry , National Institute of Technology, Wakayama Collage , Gobo-shi, Japan
| | - Shinsuke Marumoto
- b Joint Research Centre , Kindai University (Former name :Kinki University) , Higashiosaka-shi, Japan
| | - Jun Tsurumi
- c Graduate School of Materials Science , Nara Institute of Science and Technology , Ikoma , Japan
| | - Mitsuo Miyazawa
- c Graduate School of Materials Science , Nara Institute of Science and Technology , Ikoma , Japan.,d Department of Applied Chemistry , Kindai University (Former name :Kinki University) , Higashiosaka-shi, Japan.,e Graduate School of Science , Osaka City University , Osaka-shi , Japan
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15
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Tanabe G, Teramae S, Marumoto S, Okugawa S, Ishikawa F, Xie W, Morikawa T, Muraoka O, Kunikata Y. Synthesis of Salacinol-d4 as an Internal Standard for Mass-Spectrometric Quantitation of Salacinol, a Potent α-Glucosidase Inhibitor Found in a Traditional Ayurvedic Medicine “Salacia”. HETEROCYCLES 2018. [DOI: 10.3987/com-18-s(t)21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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16
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Ishikawa F, Jinno K, Kinouchi E, Ninomiya K, Marumoto S, Xie W, Muraoka O, Morikawa T, Tanabe G. Diastereoselective Synthesis of Salacinol-Type α-Glucosidase Inhibitors. J Org Chem 2017; 83:185-193. [PMID: 29189010 DOI: 10.1021/acs.joc.7b02566] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A facile and highly diastereoselective approach toward the synthesis of potent salacinol-type α-glucosidase inhibitors, originally isolated from plants of the genus "Salacia", was developed using the S-alkylation of thiosugars with epoxides in HFIP (∼90%, dr, α/β = ∼ 26/1). The dr ratio of the product was significantly improved by the protocol as compared to that of the conventional S-alkylation of thiosugars (dr, α/β = ∼ 8/1). The protocol could be used for gram scale synthesis of the desired compounds. The 3'-O-benzylated salacinol analogs, which are the most potent in vitro inhibitors to date, were synthesized and evaluated in vivo; all analogs suppressed blood glucose levels in maltose-loaded mice, at levels comparable to those of the antidiabetic agent, voglibose.
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Affiliation(s)
| | | | | | | | | | - Weijia Xie
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University , Nanjing 210009, P. R. China
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17
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Affiliation(s)
- Yoshiharu Okuno
- Department of Applied Chemistry and Biochemistry, National Institute of Technology, Wakayama Collage , Gobo-shi, Japan
| | - Shinsuke Marumoto
- Joint Research Centre, Kindai University (Former name: Kinki University) , Higashiosaka-shi, Japan
| | - Mitsuo Miyazawa
- Graduate School of Materials Science, Nara Institute of Science and Technology , Ikoma, Japan
- Department of Applied Chemistry, Kindai University (Former name: Kinki University) , Higashiosaka-shi, Japan
- Graduate School of Science, Osaka City University , Osaka-shi, Japan
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18
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Hara N, Okazaki M, Shizuma M, Marumoto S, Tajima N, Fujiki M, Imai Y. Swapping Circularly Polarised Luminescence of Eu(III)-Binaphthyl Hybridized Luminophore with and without Oxymethylene Spacer. ChemistrySelect 2017. [DOI: 10.1002/slct.201701460] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nobuyuki Hara
- Department of Applied Chemistry; Faculty of Science and Engineering; Kindai University, 3-4-1 Kowakae, Higashi-Osaka; Osaka 577-8502 Japan
| | - Mamoru Okazaki
- Department of Applied Chemistry; Faculty of Science and Engineering; Kindai University, 3-4-1 Kowakae, Higashi-Osaka; Osaka 577-8502 Japan
| | - Motohiro Shizuma
- Department of Biochemistry; Osaka Research Institute of Industrial Science and Technology, 1-6-50 Morinomiya, Joto-ku; Osaka 536-8553 Japan
| | - Shinsuke Marumoto
- Department of Applied Chemistry; Faculty of Science and Engineering; Kindai University, 3-4-1 Kowakae, Higashi-Osaka; Osaka 577-8502 Japan
| | - Nobuo Tajima
- Computational Materials Science Center; National Institute for Materials Science, 1-2-1 Sengen, Tsukuba; Ibaraki 305-0047 Japan
| | - Michiya Fujiki
- Graduate School of Materials Science; Nara Institute of Science and Technology, Takayama, Ikoma; Nara 630-0192 Japan
| | - Yoshitane Imai
- Department of Applied Chemistry; Faculty of Science and Engineering; Kindai University, 3-4-1 Kowakae, Higashi-Osaka; Osaka 577-8502 Japan
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19
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Hara N, Okazaki M, Shizuma M, Marumoto S, Tajima N, Fujiki M, Imai Y. Cover Picture: Swapping Circularly Polarised Luminescence of Eu(III)-Binaphthyl Hybridized Luminophore with and without Oxymethylene Spacer (ChemistrySelect 32/2017). ChemistrySelect 2017. [DOI: 10.1002/slct.201702659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nobuyuki Hara
- Department of Applied Chemistry; Faculty of Science and Engineering; Kindai University, 3-4-1 Kowakae, Higashi-Osaka; Osaka 577-8502 Japan
| | - Mamoru Okazaki
- Department of Applied Chemistry; Faculty of Science and Engineering; Kindai University, 3-4-1 Kowakae, Higashi-Osaka; Osaka 577-8502 Japan
| | - Motohiro Shizuma
- Department of Biochemistry; Osaka Research Institute of Industrial Science and Technology, 1-6-50 Morinomiya, Joto-ku; Osaka 536-8553 Japan
| | - Shinsuke Marumoto
- Department of Applied Chemistry; Faculty of Science and Engineering; Kindai University, 3-4-1 Kowakae, Higashi-Osaka; Osaka 577-8502 Japan
| | - Nobuo Tajima
- Computational Materials Science Center; National Institute for Materials Science, 1-2-1 Sengen, Tsukuba; Ibaraki 305-0047 Japan
| | - Michiya Fujiki
- Graduate School of Materials Science; Nara Institute of Science and Technology, Takayama, Ikoma; Nara 630-0192 Japan
| | - Yoshitane Imai
- Department of Applied Chemistry; Faculty of Science and Engineering; Kindai University, 3-4-1 Kowakae, Higashi-Osaka; Osaka 577-8502 Japan
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20
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Okuno Y, Marumoto S, Miyazawa M. Comparison of Essential Oils from Three Kinds of Cryptotaenia japonica Hassk (Kirimitsuba, Nemitsuba, and Itomitsuba) used in Japanese Food. J Oleo Sci 2017; 66:1273-1276. [PMID: 29021497 DOI: 10.5650/jos.ess17133] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The compositions of the essential oils from three kinds of Cryptotaenia japonica Hassk ("Mitsuba" in Japanese, Kirimitsuba (KM), Nemitsuba (NM), and Itomitsuba (IM)) were investigated by capillary GC/GC-MS. The oils contained 53 volatile components, of which 95% were terpenoids. The major constituents were sesquiterpenoids, which were α-selinene (KM: 39.1%; NM: 38.4%; IM: 13.2%), β-selinene (15.5%, 15.2%, 4.8%), germacrene D (12.1%, 7.2%, 24.1%), trans-farnesene (11.1%, 6.0%, 10.9%), β-elemene (2.9%, 2.9%, 6.8%), and trans-caryophyllene (1.7%, 1.7%, 2.6%). The main sesquiterpene found in KM and NM was α-selinene and in IM was germacrene D. The major monoterpenes found were β-myrcene (3.8%, 6.7%, and 3.5%) and β-pinene (2.8%, 0.2%, and 1.4%).
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Affiliation(s)
- Yoshiharu Okuno
- Department of Applied Chemistry and Biochemistry, National Institute of Technology, Wakayama Collage
| | - Shinsuke Marumoto
- Joint Research Center, Kindai University (Former name :Kinki University)
| | - Mitsuo Miyazawa
- Graduate School of Materials Science, Nara Institute of Science and Technology.,Department of Applied Chemistry, Kindai University (Former name :Kinki University).,Graduate School of Science, Osaka City University
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21
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Marumoto S, Okuno Y, Hagiwara Y, Miyazawa M. Biotransformation of (-)-(1R,4S)-Menthone and (+)-(1S,4R)-Menthone by the Common Cutworm Spodoptera litura Larvae. J Oleo Sci 2017; 66:883-888. [PMID: 28701651 DOI: 10.5650/jos.ess17005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Using biotransformation as a biocatalytic process has the advantage of being able to proceed under mild conditions and with high regio- and enantioselectivity. This study investigated the biotransformation of (-)-(1R,4S)-menthone (1) and (+)-(1S,4R)-menthone (2) by Spodoptera litura larvae. Compound 1 was converted to (-)-(1R,4S)-7-hydroxymenthone (1-1), (+)-(1R,3S,4S)-7-hydroxyneomenthol (1-2) and (-)-(1R,4S,8R)-p-menth-3-one-9-oic acid (1-3). The metabolism of substrate 2 generated three enantiomers of the above metabolites, designated as 2-1 to 2-3, respectively. The C-9 position of (-)-menthone and (+)-menthone was oxidized to carboxylic acid by S. litura, which is a metabolic pathway not observed in any other example of biocatalysis.
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Affiliation(s)
- Shinsuke Marumoto
- Joint Research Center, Kindai University (Former name: Kinki University)
| | - Yoshiharu Okuno
- Department of Materials Science, Wakayama National College of Technology
| | - Yuki Hagiwara
- Department of Applied Chemistry, Kindai University (Former name: Kinki University)
| | - Mitsuo Miyazawa
- Graduate School of Materials Science, Nara Institute of Science and Technology.,Graduate School of Science, Osaka City University.,Department of Applied Chemistry, Kindai University (Former name: Kinki University)
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22
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Tanabe G, Tsutsui N, Shibatani K, Marumoto S, Ishikawa F, Ninomiya K, Muraoka O, Morikawa T. Total syntheses of the aromatase inhibitors, mammeasins C and D, from Thai medicinal plant Mammea siamensis. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.06.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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23
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Abstract
Inhibition of β-secretase (BACE1) is currently regarded as the leading treatment strategy for Alzheimer's disease. In the present study, we aimed to screen the in vitro inhibitory activity of 80 types of aroma compounds (monoterpenes, sesquiterpenes, and C13 norisoprenoids), including plant-based types, at a 200-μM concentration against a recombinant human BACE1. The results showed that the most potent inhibitor of BACE1 was geranyl acetone followed by (+)-camphor, (-)-fenchone, (+)-fenchone, and (-)-camphor with the half-maximal inhibitory concentration (IC50) values of 51.9 ± 3.9, 95.9 ± 11.0, 106.3 ± 14.9, 117.0 ± 18.6, and 134.1 ± 16.4 μM, respectively. Furthermore, the mechanism of inhibition of BACE1 by geranyl acetone was analyzed using Dixon kinetics plus Cornish-Bowden plots, which revealed mixed-type mode. Therefore aroma compounds may be used as potential lead molecules for designing anti-BACE1 agents.
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Affiliation(s)
- Shinsuke Marumoto
- Joint Research Center, Kindai University (Former name: Kinki University)
| | - Yoshiharu Okuno
- Department of Materials Science, Wakayama National College of Technology
| | - Mitsuo Miyazawa
- Graduate School of Materials Science, Nara Institute of Science and Technology.,Graduate School of Science, Osaka City University.,Department of Applied Chemistry, Kindai University (Former name: Kinki University)
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Marumoto S, Shimizu R, Tanabe G, Okuno Y, Miyazawa M. In Vitro Regio- and Stereoselective Oxidation of β-Ionone by Human Liver Microsomes. Planta Med 2017; 83:292-299. [PMID: 27574897 DOI: 10.1055/s-0042-112128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The metabolism of the norisoprenoid β-ionone was investigated in vitro using human liver microsomes and 11 different recombinant cytochrome P450 enzymes expressed in Trichoplusia ni cells. β-Ionone was found to be oxidized via 4S-hydroxylation by CYP2B6 in human liver microsomes. CYP1A2 also regioselectively catalyzed the hydroxylation of β-ionone to yield 4-hydroxylation; this conversion was not stereoselective. Further kinetic analysis revealed that CYP2B6 exhibited the highest activity for β-ionone 4-hydroxylation. Kinetic analysis showed that Km and Vmax for oxidation of β-ionone by CYP1A2 and CYP2B6 was 107.9 ± 36.0 µM and 3200.3 ± 323.0 nmol/min/nmol P450 and 5.6 ± 1.2 µM and 572.8 ± 29.8 nmol/min/nmol P450, respectively. The reaction rates observed using human liver microsomes and recombinant CYP2B6 were very high compared with those of other CYP2B6 substrates reported thus far. These results suggest that β-ionone, a norisoprenoid present in nature, is one of the effective substrates for CYP2B enzymes in human liver microsomes. To the best of our knowledge, this is the first time that 4-hydroxy β-ionone has been described as a human metabolite of β-ionone.
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Affiliation(s)
- Shinsuke Marumoto
- Joint Research Center, Kinki (Kindai) University, Kowakae, Higashiosaka-shi, Osaka, Japan
| | - Ryoyu Shimizu
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki (Kindai) University, Kowakae, Higashiosaka-shi, Osaka, Japan
| | - Genzoh Tanabe
- Pharmaceutical Research and Technology Institute, Kinki (Kindai) University, Higashi-osaka, Osaka, Japan
| | - Yoshiharu Okuno
- Department of Materials Science, Wakayama National College of Technology, Gobo, Wakayama Japan
| | - Mitsuo Miyazawa
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki (Kindai) University, Kowakae, Higashiosaka-shi, Osaka, Japan
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25
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Tanabe G, Matsuda Y, Oka M, Kunikata Y, Tsutsui N, Xie W, Balakishan G, Amer MFA, Marumoto S, Muraoka O. Highly Diastereoselective Route to α-Glucosidase Inhibitors, Neosalacinol and Neoponkoranol. J Org Chem 2016; 81:3407-15. [DOI: 10.1021/acs.joc.5b02894] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | | | | | - Weija Xie
- State
Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Gorre Balakishan
- Department
of Organic Chemistry, Telangana University, Nizamabad 503322, Telangana State, India
| | - Mumen F. A. Amer
- Faculty
of Pharmacy, Applied Science Private University, Al Arab St 21, Amman 11931, Jordan
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Usami A, Motooka R, Nakahashi H, Marumoto S, Miyazawa M. Chemical Composition and Character Impact Odorants in Volatile Oils from Edible Mushrooms. Chem Biodivers 2015; 12:1734-45. [DOI: 10.1002/cbdv.201400395] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Indexed: 11/12/2022]
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27
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Motooka R, Usami A, Nakahashi H, Koutari S, Nakaya S, Shimizu R, Tsuji K, Marumoto S, Miyazawa M. Characteristic Odor Components of Essential Oils from Eurya japonica. J Oleo Sci 2015; 64:577-84. [DOI: 10.5650/jos.ess14225] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Ryota Motooka
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
| | - Atsushi Usami
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
| | - Hiroshi Nakahashi
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
| | - Satoshi Koutari
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
| | - Satoshi Nakaya
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
| | - Ryoyu Shimizu
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
| | - Kaoru Tsuji
- Center for Ecological Research, Kyoto University
| | | | - Mitsuo Miyazawa
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
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Iwasa M, Nakaya S, Maki Y, Marumoto S, Usami A, Miyazawa M. Identification of Aroma-active Compounds in Essential Oil from Uncaria Hook by Gas Chromatography- Mass Spectrometry and Gas Chromatography-Olfactometry. J Oleo Sci 2015; 64:825-33. [DOI: 10.5650/jos.ess15048] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Megumi Iwasa
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
| | - Satoshi Nakaya
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
| | - Yusuke Maki
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
| | | | - Atsushi Usami
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
| | - Mitsuo Miyazawa
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
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29
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Miyazawa M, Nakahashi H, Kashima Y, Motooka R, Hara N, Nakagawa H, Yoshii T, Usami A, Marumoto S. Chemical Composition and Aroma Evaluation of Essential Oils from Skunk Cabbage ( Symplocarpus foetidus). J Oleo Sci 2015; 64:1329-36. [DOI: 10.5650/jos.ess15161] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Mitsuo Miyazawa
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
| | - Hiroshi Nakahashi
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
| | - Yusei Kashima
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
| | - Ryota Motooka
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
| | - Nobuyuki Hara
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
| | - Hiroki Nakagawa
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
| | - Takashi Yoshii
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
| | - Atsushi Usami
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University (Kindai University)
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Usami A, Nakahashi H, Marumoto S, Miyazawa M. Aroma evaluation of setonojigiku (Chrysanthemum japonense var. debile) by hydrodistillation and solvent-assisted flavour evaporation. Phytochem Anal 2014; 25:561-566. [PMID: 24980450 DOI: 10.1002/pca.2528] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2014] [Revised: 04/18/2014] [Accepted: 04/30/2014] [Indexed: 06/03/2023]
Abstract
INTRODUCTION The Chrysanthemum genus consisting of about 200 species is mainly distributed over the Northern Hemisphere. Despite the pleasant odour of C. japonense var. debile (setonojigiku), no detailed analysis of the aroma-active compounds has been reported using sensory evaluation. OBJECTIVES Using a hydrodistillation (HD) and a solvent-assisted flavour evaporation (SAFE) method to obtain the volatile oil from the leaf parts. METHODS To clarify odorants contributing to the characteristic aroma-active compounds, the aroma-extract dilution analysis (AEDA) method was performed through gas chromatography olfactometry (GC/O) analysis. In addition, the odour activity value (OAV) was calculated in order to determine the relative contribution of each compound to the aroma-active compounds. RESULTS A total of 42 components by HD oil were identified by GC-MS, whereas 34 components were identified in SAFE oil. Thirteen compounds were identified by GC/O analysis in HD and SAFE oils respectively. CONCLUSION Each extraction method has its own advantages and disadvantages, and they are generally complementary to each other. On the basis of AEDA, OAV and sensory evaluations, [2.2.1] bicyclic monoterpenes (borneol, bornyl acetate and camphor) and β-caryophyllene are considered to be the main aroma-active compounds of both extraction methods.
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Affiliation(s)
- Atsushi Usami
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka-shi, Osaka, 577-8502, Japan
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Usami A, Kashima Y, Marumoto S, Miyazawa M. Characterization of aroma-active compounds in dry flower of Malva sylvestris L. by GC-MS-O analysis and OAV calculations. J Oleo Sci 2014; 62:563-70. [PMID: 23985485 DOI: 10.5650/jos.62.563] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In this study, the aroma-active compounds in the dried flower of Malva sylvestris L. were extracted by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS), and gas chromatography-olfactometry (GC-O) and aroma extraction dilution analysis (AEDA). A light yellow oil with a sweet odor was obtained with a percentage yield of 0.039% (w/w), and 143 volatile compounds (89.86%) were identified by GC-MS. The main compounds were hexadecanoic acid (10.1%), pentacosane (4.8%) and 6,10,14-trimethyl-2-pentadecanone (4.1%). The essential oil consisted mainly of hydrocarbons (25.40%) followed by, alcohols (18.78%), acids (16.66%), ethers (5.01%) ketones (7.28%), esters(12.43%), aldehydes (2.30%) and others (2.00%). Of these compounds, 20 were determined by GC-O and AEDA, to be odor-active (FD (flavor dilution) factor ≥ 1). β-Damascenone (FD = 9, sweet), phenylacetaldehyde (FD = 8, floral, honey-like) and (E)-β-ocimene (FD = 8, spicy) were the most intense aroma-active compounds in M. sylvestris. In order to determine the relative contribution of each of the compounds to the aroma of M. sylvestris, odor activity values (OAVs) were used. β-Damascenone had the highest odor activity values (OAV) (50,700), followed by (E)-β-ionone (15,444) and decanal (3,510). In particular, β-damascenone had a high FD factors, and therefore, this compound was considered to be the main aroma-active components of the essential oil. On the basis of AEDA, OAVs, and sensory evaluation results, β-damascenone is estimated to be the main aroma-active compound of the essential oil.
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Affiliation(s)
- Atsushi Usami
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University
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Usami A, Ono T, Kashima Y, Nakahashi H, Marumoto S, Nosaka S, Watanabe S, Miyazawa M. Comparison of agitake (Pleurotus eryngii var. ferulae) volatile components with characteristic odors extracted by hydrodistillation and solvent-assisted flavor evaporation. J Oleo Sci 2013; 63:83-92. [PMID: 24371192 DOI: 10.5650/jos.ess13043] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The chemical composition of volatile oil from agitake (Pleurotus eryngii var. ferulae) was established for the first time using gas chromatography (GC) and GC-mass spectrometry. Sixty-seven and 24 components were extracted by hydrodistillation (HD) using diethyl ether (DE) and dichloromethane (DM), respectively; these components accounted for 80.3% and 91.8% of the total oil, respectively. Thirteen and 48 components of were extracted by the solvent-assisted flavor evaporation method (SAFE), using DE and DM, respectively, and identified; these components accounted for 83.5% and 82.0% of the total oil, respectively. Methylsuccinimide and 2,3,7-trimethyl-2-octene were the most characteristic components by SAFE using DM.Odor evaluation of the volatile oil from agitake was also carried out using GC-olfactometry (GC-O), aroma extraction dilution analysis (AEDA), and the odor activity value (OAV). Sixteen, 8, 5 and 9 aroma-active components were identified using HD (DE and DM) and SAFE (DE and DM), respectively. The main aroma-active components extracted using HD and SAFE were 1-octen-3-ol (mushroom-like) and phenylacetaldehyde (floral), respectively. This study proved that HD and SAFE can be used as complementary extraction techniques for the complete characterization of volatile oil from agitake.
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Affiliation(s)
- Atsushi Usami
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University
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Abstract
The essential oils from aerial parts of Scutellaria laeteviolacea was analyzed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). The characteristic odor components were also detected in the oil using gas chromatography-olfactometry (GC-O) analysis and aroma extraction dilution analysis (AEDA). As a result, 100 components (accounting for 99.11 %) of S. laeteviolacea, were identified. The major components of S. laeteviolacea oil were found to be 1-octen-3-ol (27.72 %), germacrene D (21.67 %),and β-caryophyllene (9.18 %). The GC-O and AEDA results showed that 1-octen-3-ol, germacrene D, germacrene B, and β-caryophyllene were the most characteristic odor components of the oil. These compounds are thought to contribute to the unique flavor of this plant.
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Affiliation(s)
- Mitsuo Miyazawa
- Department of Applied Chemistry, Kinki University, Osaka, Japan.
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Ono T, Koutari S, Marumoto S, Miyazawa M. Novel compound, (2Z,6E)-1-hydroxy-3,7-dimethyl-2,6-octadien-8-oic acid produced from biotransformation of nerol by Spodoptera litura larvae. J Oleo Sci 2013; 62:313-8. [PMID: 23648406 DOI: 10.5650/jos.62.313] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Biotransformation of nerol by larvae of the common cutworm (Spodoptera litura) was investigated. The resulting major metabolites were (2Z,6E)-1-hydroxy-3,7-dimethyl-2,6-octadien-8-oic acid and 8-hydroxynerol, and the minor metabolites were 9-hydroxynerol and (2Z,6E)-1-hydroxy-3,7-dimethyl-2,6-octadien-8-al. (2Z,6E)-1-Hydroxy-3,7-dimethyl-2,6-octadien-8-oic acid is a novel compound. The results indicate that biotransformation of nerol by S. litura larvae involved 2 pathways; the main pathway involved oxidation at the methyl group of the geminal dimethyl at C-8 position followed by carboxylation, and the minor pathway involved oxidation at the methyl group of the geminal dimethyl at C-9 position.
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Affiliation(s)
- Toshirou Ono
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University, Osaka, Japan
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Usami A, Ono T, Marumoto S, Miyazawa M. Comparison of Volatile Compounds with Characteristic Odor in Flowers and Leaves of Nojigiku (Chrysanthemum japonense). J Oleo Sci 2013; 62:631-6. [DOI: 10.5650/jos.62.631] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Marumoto S, Yamamoto SP, Nishimura H, Onomoto K, Yatagai M, Yazaki K, Fujita T, Watanabe T. Identification of a germicidal compound against picornavirus in bamboo pyroligneous acid. J Agric Food Chem 2012; 60:9106-9111. [PMID: 22849724 DOI: 10.1021/jf3021317] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The germicidal activity of pyroligneous acid (PA) against a picornavirus, encephalomyocarditis virus (EMCV), was analyzed, and the component responsible for its disinfectant activity was identified. Bamboo PA (BPA) inactivated EMCV, but neutralization of BPA abolished this activity. Using liquid-liquid phase extraction and silica gel column chromatography, the hydrophobic active fraction of BPA was separated and its 12 major components were identified. The active fraction was reconstructed by mixing synthetic chemicals at the determined concentrations, and a subtraction series of one chemical from the complete mixture was prepared. An in vitro virus assay demonstrated that phenol was the sole germicidal component, and acetic acid augmented the phenol's inactivating activity resulting in >5-log decrease in EMCV infectivity. Considering the low environmental risk of PA, these findings suggest that BPA is a potentially useful agent for preventing viral epidemics in agricultural and human environments.
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Affiliation(s)
- Shinsuke Marumoto
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Kyoto 611-0011, Japan
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Marumoto S, Miyazawa M. Structure-activity relationships for naturally occurring coumarins as β-secretase inhibitor. Bioorg Med Chem 2011; 20:784-8. [PMID: 22222157 DOI: 10.1016/j.bmc.2011.12.002] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Revised: 11/30/2011] [Accepted: 12/01/2011] [Indexed: 11/13/2022]
Abstract
The present study was demonstrated to evaluate the effects of naturally occurring coumarins (NOCs) including simple coumarins, furanocoumarins, and pyranocoumarins on the inhibition of β-secretase (BACE1) activity. Of 41 NOCs examined, some furanocoumarins inhibited BACE1 activity, but simple coumarins and pyranocoumarins did not affect. The most potent inhibitor was 5-geranyloxy-8-methoxypsoralen (31), which has an IC(50) value of 9.9 μM. Other furanocoumarin derivatives, for example, 8-geranyloxy-5-methoxypsoralen (35), 8-geranyloxypsoralen (24), and bergamottin (18) inhibited BACE1 activity, with the IC(50) values <25.0 μM. Analyses of the inhibition mechanism by Dixon plots and Cornish-Bowden plots showed that compounds 18, 31 and 35 were mixed-type inhibitor. The kinetics of inhibition of BACE1 by coumarins 24 was non-competitive inhibitors.
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Affiliation(s)
- Shinsuke Marumoto
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University, Kowakae, Higashiosaka-shi, Osaka 577-8502, Japan
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Marumoto S, Oda Y, Miyazawa M. Antigenotoxic activity of naturally occurring furanocoumarins. Environ Mol Mutagen 2011; 52:646-57. [PMID: 21786339 DOI: 10.1002/em.20665] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2010] [Revised: 05/18/2011] [Accepted: 06/02/2011] [Indexed: 05/25/2023]
Abstract
This study was designed to investigate the antigenotoxic effects of a series of naturally occurring furanocoumarins (NOFs) including isoimperatorin, imperatorin, (+)-oxypeucedanin, (+)-byakangelicol, and (+)-byakangelicine on antigenotoxic activities against genotoxicity induced by carcinogens [furylfuramide and N-methyl-N'-nitro-N-nitrosoguanidine], and procarcinogens 2-[2-(acetylamino)-4-amino-5-methoxyphenyl]-5-amino-7-bromo-4-chloro-2H-benzotriazole (PBTA-4) and 2-amino-3,4-dimethyl-3H-imidazo-[4,5-f] quinoline (MeIQ)] to genotoxic metabolites catalyzed by rat S9 or rat and human recombinant cytochrome P450 (CYP) 1As by using the umu test based on SOS response. Five different NOFs, which were found in the human diets, strongly inhibited the umuC induction by procarcinogens, but did not be affected by carcinogens. Notably, isoimperatorin and (+)-byakangelicol were found to be potent inhibitors on the metabolic activation of PBTA-4 and MeIQ to genotoxic metabolites catalyzed by rat and human CYP1A1, or rat and human CYP1A2, respectively. In addition, to elucidate the mechanism of their antigenotoxic effects against procarcinogens, the effects of NOFs on rat and human CYP1A1- or rat and human CYP1A2-related enzyme activities of 7-ethoxyresorufin-O-deethylase (EROD) were also investigated. Reduction of the EROD activities by some of the NOFs with IC(50) values of 0.23-20.64 μM was found to be due to strong inhibition of CYP1A1 and CYP1A2 dependent monooxygenases. Furthermore, the mechanism of inhibitions by NOFs on human CYP1A1 and CYP1A2 was analyzed by means of Dixon plots plus Cornish-Bowden plots. The kinetic studies of inhibition types revealed that these compounds inhibited the human CYP1A1 and CYP1A2 a variety of modes rather than by a uniform one. Moreover, experiments with a two-stage incubation indicated that NOFs, except for imperatorin, inhibited human CYP1A1 in a mechanism-based manner, but directly inhibited human CYP1A2. This data suggest that certain NOFs, to which humans are exposed in the diet, may be capable of affecting the metabolic activation of procarcinogens due to inhibitions of CYP1A1 and CYP1A2 enzymes.
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Affiliation(s)
- Shinsuke Marumoto
- Department of Applied Chemistry, Kinki University, Kowakae, Higashiosaka-Shi, Osaka, Japan
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Miyazawa M, Marumoto S, Takahashi T, Nakahashi H, Haigou R, Nakanishi K. Metabolism of (+)- and (-)-menthols by CYP2A6 in human liver microsomes. J Oleo Sci 2011; 60:127-32. [PMID: 21343660 DOI: 10.5650/jos.60.127] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The in vitro metabolism of (+)-(1S,3S,4R) and (-)-(1R,3R,4S)-menthol enantiomers was examined by incubation with human liver microsomes, and the oxidative metabolites thus formed were analyzed using gas chromatography-mass spectrometry (GC-MS). The (+)- and (-)-menthols were found to be oxidized to the respective (+)-(1S,3S,4S)- and (-)-(1R,3R,4R)-trans-p-menthane-3,8-diol derivatives by human liver microsomal P450 enzymes. Cytochrome P450 (CYP) 2A6 was determined to be the major enzyme involved in the hydroxylation of (+)- and (-)-menthols by human liver microsomes on the basis of the following lines of evidence. First, of 11 recombinant human P450 enzymes tested, CYP2A6 catalyzed the oxidation of (+)- and (-)-menthols. Second, oxidation of (+)- and (-)-menthols was inhibited by (+)-menthofuran and anti-CYP2A6 antibody. Finally, (+)- and (-)-menthol activities were found to correlate with contents of CYP2A6 in liver microsomes of 9 human samples.
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Affiliation(s)
- Mitsuo Miyazawa
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University, Kowakae, Higashiosaka-shi, Osaka, Japan.
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Abstract
Biotransformation studies conducted on (+)-(S)-ar-turmerone (1) and (+)-(S)-dihydro-ar-turmerone (2) by the fungus Aspergillus niger have revealed that 1 was metabolized to give four oxidized metabolites, (+)-(7S)-hydroxydehydro-ar-todomatuic acid (3), (+)-(7S,10E)-12-hydroxydehydro-ar-todomatuic acid (4), (+)-(7S,10E)-7,12-dihydroxydehydro-ar-todomatuic acid (5), and (+)-(7S)-15-carboxy-9,13-epoxy-7-hydroxy-9,13-dehydro-ar-curcumene (6), and (+)-(S)-dihydro-ar-turmerone (2) was metabolized to (+)-7,11-dihydroxy-ar-todomatuic acid (7). Metabolites 3-7 were characterized using spectroscopic techniques. Metabolites 3-7 inhibited acetylcholinesterase (AChE) although less so than the parent substrates.
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Affiliation(s)
- Mai Fujiwara
- Department of Applied Chemistry, Faculty of Science of Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka-shi, Osaka 577-8502, Japan
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41
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Abstract
The biotransformation of bergapten (1) by the fungus Glomerella cingulata gave the corresponding reduced acid, 6,7-furano-5-methoxy hydrocoumaric acid (2), a new compound. Xanthotoxin (3) was also converted to the corresponding reduced acid cnidiol b (4) and demethylated metabolite xanthotoxol (5) by G. cingulata. The structure of the new compound 2 was elucidated by high-resolution mass spectrometry, extensive NMR techniques, including (1)H NMR and (13)C NMR, (1)H-(1)H correlation spectroscopy, heteronuclear multiple quantum coherence, and heteonuclear multiple bond coherence. The methyl ester or methyl ether or methyl ester and ether derivatives of 2 and 4 were synthesized. All compounds were tested for the beta-secretase (BACE1) inhibitory activity in vitro. The methyl ester and ether derivative 8 was shown to possess BACE1 inhibitory activity, and a IC(50) value was 0.64 +/- 0.04 mM.
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Affiliation(s)
- Shinsuke Marumoto
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University, Kowakae, Higashiosaka-shi, Osaka 577-8502, Japan
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Marumoto S, Miyazawa M. Biotransformation of isoimperatorin and imperatorin by Glomerella cingulata and β-secretase inhibitory activity. Bioorg Med Chem 2010; 18:455-9. [DOI: 10.1016/j.bmc.2009.10.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2009] [Revised: 10/01/2009] [Accepted: 10/02/2009] [Indexed: 11/24/2022]
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Miyazawa M, Marumoto S, Masuda A, Kano H, Takechi H. Regioselective biotransformation of (+)- and (-)-citronellene by the larvae of common cutworm ( Spodoptera litura ). J Agric Food Chem 2009; 57:7800-7804. [PMID: 19673529 DOI: 10.1021/jf9009069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Terpenoids, which have many biological activities and have occurred widely in nature, can be artificially synthesized. However, regioselective oxidation of terpenoids is difficult by chemical methods. In this study, (+)- and (-)-citronellene were biotransformed with Spodoptera litura to define the mechanism of metabolism of citronellene and gain a new natural terpenoid. (+)-Citronellene was converted to (2S,3S)-3,7-dimethyl-6-octene-1,2-diol and (2R,3S)-3,7-dimethyl-6-octene-1,2-diol (89.7%), (3S,6S)-(-)-3,7-dimethyl-1-octene-6,7-diol (3.8%), (3S)-(6E)-(+)-3,7-dimethyl-1,6-octadien-8-ol (4.2%), and (3S)-(6E)-(+)-3,7-dimethyl-1,6-octadien-8-oic acid (2.3%). In contrast, (-)-citronellene was converted to (2R,3R)-3,7-dimethyl-6-octene-1,2-diol and (2S,3R)-3,7-dimethyl-6-octene-1,2-diol (56.3%), (+)-iridan-7,8-diol (3.5%), and (3R)-(6E)-(-)-3,7-dimethyl-1,6-octadien-8-oic acid (40.2%). The main metabolic pathway of (+)- and (-)-citronellene by larvae of S. litura was oxidized at the terminal double bond and trans-allylic methyl position. Particularly on (+)-citronellene, the regioselective reaction was shown. On the oxidation of C-6, C-7, and C-8 positions, four new compounds (3S,6S)-(-)-3,7-dimethyl-1-octene-6,7-diol, (3S)-(6E)-(+)-3,7-dimethyl-1,6-octadien-8-oic acid, (+)-iridan-7,8-diol, and (3R)-(6E)-(-)-3,7-dimethyl-1,6-octadien-8-oic acid were produced in regioselective oxidation. It noted that stereoselective oxidation occurred between the enantiomers. The C-6 position was oxidized on the (+)-(3S) form, whereas cyclized and the C-7 position were oxidized on the (-)-(3R) form.
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Affiliation(s)
- Mitsuo Miyazawa
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University, Kowakae, Higashiosaka-shi, Osaka 577-8052, Japan.
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Abstract
[reaction--see text] The 2-oxonia Cope rearrangement is undetectable in typical Prins cyclization reactions. We have investigated the Cope rearrangement in a Prins cyclization reaction using a competitive reduction of the oxocarbenium ion intermediate, and a racemization reaction mediated by the rearrangement. In our unactivated substrate, the 2-oxonia Cope rearrangement was much faster than Prins cyclization. An enantioselective allyl transfer reaction also was developed using a 2-oxonia Cope rearrangement.
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Affiliation(s)
- S D Rychnovsky
- Department of Chemistry, 516 Rowland Hall, University of California, Irvine, California 92697-2025, USA.
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Sawayama T, Ochiai M, Marumoto S, Matsuura T, Niki I. Influence of amyl nitrite inhalation on the systolic time intervals in normal subjects and in patients with ischemic heart disease. Circulation 1969; 40:327-35. [PMID: 5810889 DOI: 10.1161/01.cir.40.3.327] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The systolic time intervals of the left ventricle in 30 patients with ischemic heart disease but without heart failure were compared with those of 30 normal individuals before and after inhalation of amyl nitrite by using polygraphic recordings.
In the normal subjects, following amyl nitrite, the ejection-time index was significantly prolonged, and the pre-ejection period and its index were significantly reduced, while the ejection time was not significantly shortened. The ischemic heart disease group, however, exhibited no significant changes in the ejection-time index, pre-ejection period, or its index, whereas the ejection time was significantly shortened.
These differences were not related to heart rate or diastolic blood pressure level but may be explained by a postulated lack of increase in stroke volume or in the contractility of the ischemic myocardium, or both, at the maximal effect of amyl nitrite.
The responses of the left ventricular systolic intervals to amyl nitrite may prove useful as a clinical test of latent ventricular functional impairment in subjects with ischemic heart disease.
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Sawayama T, Marumoto S, Niki I, Matsuura T. The clinical usefulness of the amyl nitrite inhalation test in the assessment of the third and atrial heart sounds in ischemic heart disease. Am Heart J 1968; 76:746-54. [PMID: 5721831 DOI: 10.1016/0002-8703(68)90259-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Marumoto S, Shiozu N, Tsuda H, Imai Y, Shimamura O. [Effect of CDP-choline on electroencephalogram of acute hypnotic poisoning]. No To Shinkei 1968; 20:649-55. [PMID: 5755064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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50
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Marumoto S, Shiozu N, Tsuda H, Imai Y, Shimamura O. [Effects of CDP-choline on EEG in experimental acute hypnotic poisoning]. No To Shinkei 1968; 20:234-42. [PMID: 5695562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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