Staff

Iwao OkamotoProfessor / Ph.D.last update : 2022.04.02

Japanese

Profile

Name
Iwao Okamoto
Affiliation
Laboratory of Pharmaceutical Organic Chemistry
Subjects
Fundamental Organic Chemistry
Organic Chemistry
Official title
Professor
Degree
Ph.D.
  • [Original paper] Structures and Reactivities of N-Alkenyl-Substituted Anilides: The “Magic” Methyl Effect on Alkene. Ryu Yamasaki, Mariko Ono, Kento Morita, Ai Ito, Kazuo Fukuda, Iwao Okamoto J. Org. Chem. 88 (20) 14487–14493 2023 
  • [Original paper] Synthesis and conformational analysis of N-aromatic acetamides bearing thiophene: effect of intramolecular chalcogen-chalcogen interaction on amide conformational stability. Ai Ito, Marino Asato, Yuki Asami, Kazuo Fukuda, Ryu Yamasaki, Iwao Okamoto J. Org. Chem. 88 (11) 7075–7087 2023 
  • [Original paper] Structure and Additive-free Transamidation of Planar N-Cyano Amides. Ryu Yamasaki, Yuko Okada, Hiromi Iizumi, Ai Ito, Kazuo Fukuda, Iwao Okamoto J. Org. Chem. 88 (9) 5704–5712 2023 
  • [Original paper] Reversible On/Off Conformational Switching of Pentafluorobenzoyl Amide Triggered by Acid Vapor and Sublimation Ryu Yamasaki, Misuzu Harada, Ai Ito, Kazuo Fukuda, Shota Matsumoto, Satoru Karasawa, Iwao Okamoto CrystEngComm 24 (35) 6226–6231 2022 
  • [Original paper] Conformational Switch of Benzanilide Derivative Induced by Acid; Effect of Pentafluorobenzoyl Group Ryu Yamasaki, Misuzu Harada, Rino Nagata, Ai Ito, Kazuo Fukuda, Iwao Okamoto J. Org. Chem. 87 (13) 8469–8479 2022 
  • [Original paper] Hybrid molecule between platanic acid and LCL-161 as a yes-associated protein degrader Naoko Nakano, Kazuo Fukuda, Etsu Tashiro, Haruka Ishikawa, Waka Nagano, Rie Kawamoto, Alice Mori, Misao Watanabe, Ryu Yamazaki, Takahisa Nakane, Mikihiko Naito, Iwao Okamoto, Susumu Itoh The Journal of Biochemistry 171 (6) 631–640 2022 
  • [Original paper] Synthesis and crystal structures of N,N-diarylacetamides bearing two azulene rings Ai Ito, Mayuko Watanabe, Ayako Ishii, Ryu Yamasaki, Iwao Okamoto Tetrahedron Lett. 86 Article 153523 2021 
  • [Original paper] Characterization of Push−Pull-Type Benzo[X]quinoline Derivatives (X = g or f): Environmentally Responsive Fluorescent Dyes with Multiple Functions Yasufumi Fuchi, Tomohiro Umeno, Yuichiro Abe, Keita Ikeno, Ryu Yamasaki, Iwao Okamoto, Kazuteru Usui, Satoru Karasawa J. Org. Chem. 85 13177–13190 2020 
  • [Original paper] Synthesis and conformational analysis of N-aryl-N-(6-azulenyl)acetamides Ai Ito, Ayako Ishii, Takamasa Amaki, Kazuo Fukuda, Ryu Yamasaki, Iwao Okamoto Tetrahedron Lett. 60 (29) 1929-1933 2019 
  • [Original paper] N-Ethynylation of Anilides Decreases the Double-Bond Character of Amide Bond while Retaining trans-Conformation and Planarity Ryu Yamasaki, Kento Morita, Hiromi Iizumi, Ai Ito, Kazuo Fukuda, Iwao Okamoto Chem. Eur. J. 25 (43) 10118-10122 2019 
  • [Original paper] Conformational analysis of N-aryl-N-(2-azulenyl)acetamides Ai Ito, Takamasa Amaki, Ayako Ishii, Kazuo Fukuda, Ryu Yamasaki, Iwao Okamoto Tetrahedron Lett. 59 (45) 3994-3998 2018 
  • [Original paper] Spontaneous and direct transformation of O-aryl-N-aryl carbamates into N,N’-diarylureas Ryu Yamasaki, Yutaka Honjo, Ai Ito, Kazuo Fukuda, Iwao Okamoto Chem. Pharm. Bull. 66 (9) 880-884 2018 
  • [Original paper] Symthesis and conformational analysis of N-aryl-N-(3-thienyl) acetamides Ai Ito, Yuki Asami, Marino Asato, Kazuo Fukuda, Ryu Yamasaki, Iwao Okamoto Tetrahedron Lett. 59 (25) 2454–2458 2018 
  • [Original paper] Crystal engineering of N,N'-diphenylurea compounds featuring phenyl-perfluorophenyl interaction Ryu Yamasaki, Mana Iida, Ai Ito, Kazuo Fukuda, Aya Tanatani, Hiroyuki Kagechika, Hyuma Masu, Iwao Okamoto Cryst. Crowth Des. 17 (11) 5858–5866 2017 
  • [Original paper] Acid-controlled switching of conformational preference of N,N-diarylamides bearing pyridine. Ai Ito, Hiroto Fujino, Keiko Ushiyama, Eriko Yamanaka, Ryu Yamasaki, Iwao Okamoto Tetrahedron Lett. 57 (42) 4737-4741 2016 
  • [Original paper] Gold-Catalyzed Synthesis of 2-Substituted Azepanes: Strategic Use of Soft Gold(I) and Hard Gold(III) Catalysts. Nobuyoshi Morita, Yuta Saito, Ayumi Muraji, Shintaro Ban, Yoshimitsu Hashimoto, Iwao Okamoto, Osamu Tamura Synlett 27 (13) 1936-1940 2016 
  • [Original paper] Gold-Catalyzed Dimeric Cyclization of Isoeugenol and Related 1-Phenylpropenes in Ionic Liquid: Environmentally Friendly and Stereoselective Synthesis of 1,2,3-Trisubstituted 2,3-Dihydro-1H-indenes. Nobuyoshi Morita, Rie Mashiko, Dai Hakuta, Daisuke Eguchi, Shintaro Ban, Yoshimitsu Hashimoto, Iwao Okamoto, Osamu Tamura Synthesis 48 (12) 1927-1933 2016 
  • [Original paper] Acid-induced molecular-structural transformation of N-methyl aromatic oligoamides bearing pyridine-2-carboxamide Ryu Yamasaki, Saori Fujikake, Ai Ito, Kentaro Migita, Nobuyoshi Morita, Osamu Tamura, and Iwao Okamoto Tetrahedron Lett. 57(1) 56-59 2016 
  • [Original paper] Acid- and base-induced conformational alternations of N-aryl-N-troponyl amides Ai Ito, Masanori Sato, Ryu Yamasaki, and Iwao Okamoto Tetrahedron Lett. 57(3) 438-441 2016 
  • [Original paper] BF3‑Mediated cis-Selective Cycloaddition of O‑Silyloxime with Alkenes Nobuyoshi Morita, Rina Kono, Kenji Fukui, Asuka Miyazawa, Hyuma Masu, Isao Azumaya, Shintaro Ban, Yoshimitsu Hashimoto, Iwao Okamoto, Osamu Tamura J. Org. Chem. 80 (9) 4797–4802 2015 
  • [Original paper] Gold(I)/(III)-Catalyzed Synthesis of Cyclic Ethers; Valency-Controlled Cyclization Modes Nobuyoshi Morita, Arisa Yasuda, Motohiro Shibata, Shintaro Ban, Yoshimitsu Hashimoto, Iwao Okamoto, Osamu Tamura Org. Lett. 17 (11) 2668–2671 2015 
  • [Original paper] Gold(I)/(III)-catalyzed synthesis of 2-substituted piperidines; valencycontrolled cyclization modes Nobuyoshi Morita, Tomonori Tsunokake, Yuji Narikiyo, Mayuka Harada, Tatsuyuki Tachibana, Yuta Saito, Shintaro Ban, Yoshimitsu Hashimoto, Iwao Okamoto, Osamu Tamura Tetrahedron Lett. 56 (45) 6269–6272 2015 
  • [Original paper] Solvent-dependent Conformational and Fluorescence Change of an N-Phenylbenzohydroxamic Acid Derivative Bearing Two Pyrene Moieties Misae Kanai, Tomoya Hirano, Isao Azumaya, Iwao Okamoto, Hiroyuki Kagechika, Aya Tanatani Tetrahedron 68 (13) 2778–2783 2012 
  • [Original paper] Redox-Responsive Conformational Alteration of Aromatic Amides Bearing N-Quinonyl System Iwao Okamoto, Yusuke Takahashi, Mika Sawamura, Mio Matsumura, Hyuma Masu, Kosuke Katagiri, Isao Azumaya, Masanori Nishino, Yukari Kohama, Nobuyoshi Morita, Osamu Tamura, Hiroyuki Kagechika, Aya Tanatani Tetrahedron 68 (27-28) 5346–5355 2012 
  • [Original paper] Synthesis and Biological Evaluation of Tubulysin D Analogues Related to Stereoisomers of Tubuvaline Taku Shibue, Iwao Okamoto, Nobuyoshi Morita, Hiroshi Morita, Yusuke Hirasawa, Takahiro Hosoya, Osamu Tamura Bioorg. Med. Chem. Lett. 21 (1) 431–434 2011 
  • [Original paper] Synthesis of the proposed structure of phaeosphaeride A Kenichi Kobayashi, Iwao Okamoto, Nobuyoshi Morita, Tamiko Kiyotani, Osamu Tamura Org. Biomol. Chem. 9 (16) 5825–5832 2011 
  • [Original paper] Stereoselective vinylogous Mannich reaction of 2-trimethylsilyloxyfuran with N-gulosyl nitrones Osamu Tamura, Kodai Takeda, NakaMita, Masanori Sakamoto, Iwao Okamoto, Nobuyoshi Morita, Hiroyuki Ishibashi Org. Biomol. Chem. 9 (21) 7411–7419 2011 
  • [Original paper] Convenient Synthesis of Aminopyridinecarboxylic Acids Iwao Okamoto, Masayuki Terashima, Rempei Yoshioka, Tomonori Muramatsu, Satomi Kojima, Haruka Inoue, Mio Takahashi, Nobuyoshi Morita, and Osamu Tamura Heterocycles 83 (10) 2343–2352 2011 
  • [Original paper] Acid-Induced Conformational Alteration of cis-Preferential Aromatic Amides Bearing N-Methyl-N-(2-pyridyl) Moiety Iwao Okamoto, Masayuki Terashima, Hyuma Masu, Mayumi Nabeta, Kaori Ono, Nobuyoshi Morita, Kosuke Katagiri, Isao Azumaya, Osamu Tamura Tetrahedron 67 (44) 8536–8543 2011 

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