Research output per year
Research output per year
Research output
Search results
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2024
8-Iodoisoquinolinone, a Conformationally Rigid Highly Reactive 2-Iodobenzamide Catalyst for the Oxidation of Alcohols by Hypervalent Iodine
Yakura, T., Fujiwara, T., Asakubo, K., Perumalla, H. N. L., Uzu, M., Okitsu, T., Kasama, K. & Nambu, H., 2024, In: Chemical and Pharmaceutical Bulletin. 72, 2, p. 234-239 6 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Boron Trifluoride-Mediated Domino Dehydration/Electrophilic Cyclization of Silylalkynols Leading to 2,3-Fused Tricyclic Benzofulvenes
Okitsu, T., Yoshikawa, T., Morohashi, M., Aoki, K., Yakura, T., Sakata, K. & Hatano, M., 2024/03/01, In: Organic Letters. 26, 8, p. 1652-1656 5 p.Research output: Contribution to journal › Article › peer-review
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Dearomative Intramolecular Diels–Alder/Sulfur Extrusion Reaction of Thiophenes with Alkynes Using peri-Substituted Naphthalene as a Tether
Okitsu, T., Shinohara, Y., Luo, H., Hatano, M. & Yakura, T., 2024/02/16, In: Chemistry - An Asian Journal. 19, 4, e202301031.Research output: Contribution to journal › Article › peer-review
1 Scopus citations -
Dynamic Kinetic Resolution of 2-Hydroxybiaryl Atropisomers via Lipase-Catalyzed Enantioselective O-Acylation
Kasama, K., 2024/07/12, In: ChemCatChem.Research output: Contribution to journal › Article › peer-review
Open Access1 Scopus citations -
Efficient and Environmentally Benign Oxidative Cleavage of Pyrrolidine-2-methanols to γ-Lactams Using 2-Iodobenzamide as a Catalyst and Oxone
Perumalla, H. N. L., Fujiwara, T., Okada, M., Asakubo, K., Okitsu, T., Kasama, K., Nambu, H. & Yakura, T., 2024/01/01, In: Chemical and Pharmaceutical Bulletin. 72, 1, p. 75-79 5 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Ring expansion of spirocyclopropanes with stabilized sulfonium ylides: highly diastereoselective synthesis of cyclobutanes
Nambu, H., Onuki, Y., Aso, K., Kanamori, M., Tomohara, K., Tsuge, K. & Yakura, T., 2024/03/14, In: Chemical Communications. 60, 34, p. 4537-4540 4 p.Research output: Contribution to journal › Article › peer-review
Open Access3 Scopus citations -
2023
Bismuth(III)-Catalyzed Oxidative Cross-Coupling of 3-Hydroxycarbazoles with Arenols under an Oxygen Atmosphere
Kasama, K., Koike, Y., Dai, H. & Yakura, T., 2023/09/08, In: Organic Letters. 25, 35, p. 6501-6505 5 p.Research output: Contribution to journal › Article › peer-review
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Bismuth(III)-Catalyzed Oxidative Cross-Coupling of 3-Hydroxycarbazoles with Arenols under an Oxygen Atmosphere
Kasama, K., Koike, Y., Dai, H. & Yakura, T., 2023/08/28, In: Organic Letters.Research output: Contribution to journal › Article › peer-review
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Characterization of retinal chromophore and protonated Schiff base in Thermoplasmatales archaeon heliorhodopsin using solid-state NMR spectroscopy
Suzuki, S., Kumagai, S., Nagashima, T., Yamazaki, T., Okitsu, T., Wada, A., Naito, A., Katayama, K., Inoue, K., Kandori, H. & Kawamura, I., 2023/05, In: Biophysical Chemistry. 296, 106991.Research output: Contribution to journal › Article › peer-review
6 Scopus citations -
Ring-Opening Cyclization of Spirocyclopropanes with Stabilized Phosphorus Ylides: Access to Indane and Azulene Skeletons
Onuki, Y., Yamazaki, K., Masuda, Y., Yakura, T. & Nambu, H., 2023/08/10, In: Advanced Synthesis and Catalysis. 365, 15, p. 2536-2544 9 p.Research output: Contribution to journal › Article › peer-review
2 Scopus citations -
Solid-state NMR for the characterization of retinal chromophore and Schiff base in TAT rhodopsin embedded in membranes under weakly acidic conditions
Arikawa, S., Sugimoto, T., Okitsu, T., Wada, A., Katayama, K., Kandori, H. & Kawamura, I., 2023, In: Biophysics and physicobiology. 20, e201017.Research output: Contribution to journal › Article › peer-review
Open Access6 Scopus citations -
一価のカチオン性ヨウ素反応剤を用いるアルキンの求電子的環化反応
Translated title of the contribution :Cationic Iodine (I)–Mediated Electrophilic Cyclization of Alkynes Research output: Contribution to journal › Article › peer-review
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2022
Lipase-Catalyzed Kinetic Resolution of C1-Symmetric Heterocyclic Biaryls
Kasama, K., Hinami, Y., Mizuno, K., Horino, S., Nishio, T., Yuki, C., Kanomata, K., Moustafa, G. A. I., Gröger, H. & Akai, S., 2022/05/01, In: Chemical and Pharmaceutical Bulletin. 70, 5, p. 391-399 9 p.Research output: Contribution to journal › Article › peer-review
Open Access4 Scopus citations -
Photoreaction Pathways of Bacteriorhodopsin and Its D96N Mutant as Revealed by in Situ Photoirradiation Solid-State NMR
Shigeta, A., Otani, Y., Miyasa, R., Makino, Y., Kawamura, I., Okitsu, T., Wada, A. & Naito, A., 2022/03, In: Membranes. 12, 3, 279.Research output: Contribution to journal › Article › peer-review
Open Access3 Scopus citations -
Rapid Synthesis of Polycyclic Aromatic Compounds by Iodocyclization of Ynamides
Okitsu, T., Itoh, M., Inui, A., Muta, E., Nakamoto, R., Adachi, Y., Wada, A. & Hatano, M., 2022/08, In: Asian Journal of Organic Chemistry. 11, 8, e202200275.Research output: Contribution to journal › Article › peer-review
6 Scopus citations -
Rhodium(II)-Catalyzed Site-Selective Intramolecular Insertion of Aryldiazoacetates into Unactivated Primary C−H Bond: A Direct Route to 2-Unsubstituted Indanes
Nambu, H., Amano, R., Tamura, T. & Yakura, T., 2022/07/19, In: Advanced Synthesis and Catalysis. 364, 14, p. 2422-2428 7 p.Research output: Contribution to journal › Article › peer-review
2 Scopus citations -
2021
Chemo- And regioselective cross-dehydrogenative coupling reaction of 3-hydroxycarbazoles with arenols catalyzed by a mesoporous silica-supported oxovanadium
Kasama, K., Kanomata, K., Hinami, Y., Mizuno, K., Uetake, Y., Amaya, T., Sako, M., Takizawa, S., Sasai, H. & Akai, S., 2021/10/25, In: RSC Advances. 11, 56, p. 35342-35350 9 p.Research output: Contribution to journal › Article › peer-review
Open Access8 Scopus citations -
Concise preparation and biological evaluations of 9-cis-retinoic acid analogues having an aromatic ring
Okitsu, T., Iwatsuka, K., Nakagawa, K., Okano, T. & Wada, A., 2021, In: Heterocycles. 103, 1Research output: Contribution to journal › Article › peer-review
1 Scopus citations -
Diastereo- And enantioselective intramolecular 1,6-c-h insertion reaction of diaryldiazomethanes catalyzed by chiral dirhodium(II) carboxylates
Ito, M., Kondo, Y., Namie, R., Natori, Y., Takeda, K., Nambu, H., Anada, M., Yamamoto, Y. & Hashimoto, S., 2021, In: Heterocycles. 103, 2Research output: Contribution to journal › Article › peer-review
Open Access -
Stereoselective alkylation of oxathiazinane N,O-ketals for the construction of AZA-quaternary carbon centers
Nambu, H., Tanaka, E., Okada, M., Hirosawa, C., Noda, N., Fujiwara, T. & Yakura, T., 2021, In: Heterocycles. 103, 1Research output: Contribution to journal › Article › peer-review
Open Access -
Structure of a retinal chromophore of dark-adapted middle rhodopsin as studied by solid-state nuclear magnetic resonance spectroscopy
Kawamura, I., Seki, H., Tajima, S., Makino, Y., Shigeta, A., Okitsu, T., Wada, A., Naito, A. & Sudo, Y., 2021, In: Biophysics and physicobiology. 18, p. 177-185 9 p.Research output: Contribution to journal › Article › peer-review
Open Access6 Scopus citations -
Synthesis of 1-azaazulenes using ring-opening cyclization of spirocyclopropane with amine
Nambu, H., Onuki, Y., Yamazaki, K. & Yakura, T., 2021, In: Heterocycles. 103, 2Research output: Contribution to journal › Article › peer-review
1 Scopus citations -
求 核 剤 に よ る ス ピ ロ シ ク ロ プ ロ パ ン の- 開 裂 環 化 反 応 の 開 発 と そ の 応 用
Translated title of the contribution :Ring-opening cyclizarions of spirocyclopropanes wirh nucleophiles and rheir applicarions Research output: Contribution to journal › Article › peer-review
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2020
A dearomative ipso-iodocyclization/desymmetrization sequence leading to optically active tricyclic piperazine scaffolds
Okitsu, T., Horike, A., Shimazawa, N. & Wada, A., 2020/05/14, In: Organic and Biomolecular Chemistry. 18, 18, p. 3501-3511 11 p.Research output: Contribution to journal › Article › peer-review
12 Scopus citations -
Anatomy of the coronary arteries in fetal pigs: comparison with human anatomy.
Y, D., K, Y., K, S., K, R., Z, W., H, T., Xiao K, L. & SQ., Y., 2020, In: Anatomical Science International. 95, 2, p. 265-276Research output: Contribution to journal › Article › peer-review
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Enantiodivergent Synthesis of Axially Chiral Biphenyls from σ-Symmetric 1,1'-Biphenyl-2,6-diol Derivatives by Single Lipase-Catalyzed Acylative and Hydrolytic Desymmetrization
Kasama, K., Aoyama, H. & Akai, S., 2020/02/14, In: European Journal of Organic Chemistry. 2020, 6, p. 654-661 8 p.Research output: Contribution to journal › Article › peer-review
16 Scopus citations -
Ring-opening cyclization of spirocyclopropanes using sulfoxonium ylides
Onuki, Y., Nambu, H. & Yakura, T., 2020, In: Chemical and Pharmaceutical Bulletin. 68, 5, p. 479-486 8 p.Research output: Contribution to journal › Article › peer-review
Open Access11 Scopus citations -
Synthesis and biological evaluation of 2-epi-jaspine B analogs as selective sphingosine kinase 1 inhibitors
Yang, H., Li, Y., Chai, H., Yakura, T., Liu, B. & Yao, Q., 2020/05, In: Bioorganic Chemistry. 98, 103369.Research output: Contribution to journal › Article › peer-review
16 Scopus citations -
Synthesis of one double bond-inserted retinal analogs and their binding experiments with opsins: Preparation of novel red-shifted channelrhodopsin variants
Okitsu, T., Yamano, Y., Shen, Y. C., Sasaki, T., Kobayashi, Y., Morisawa, S., Yamashita, T., Imamoto, Y., Shichida, Y. & Wada, A., 2020/03/01, In: Chemical and Pharmaceutical Bulletin. 68, 3, p. 265-272 8 p.Research output: Contribution to journal › Article › peer-review
Open Access4 Scopus citations -
Synthesis of sphingosine-related azetidine alkaloids, penaresidins: Construction of highly substituted azetidine rings
Fujiwara, T. & Yakura, T., 2020, In: Heterocycles. 101, 2, p. 383-406 24 p.Research output: Contribution to journal › Article › peer-review
Open Access3 Scopus citations -
Visual adaptation of opsin genes to the aquatic environment in sea snakes
Seiko, T., Kishida, T., Toyama, M., Hariyama, T., Okitsu, T., Wada, A., Toda, M., Satta, Y. & Terai, Y., 2020/12, In: BMC Evolutionary Biology. 20, 1, 158.Research output: Contribution to journal › Article › peer-review
Open Access4 Scopus citations -
Ynamides enabled 6-, 7-, and 8-endo-dig iodocyclization of ethoxyethyl ethers: rapid construction of medium-sized oxacycles at room temperature
Okitsu, T., Namura, A., Kondo, S., Tada, S., Yanagida, M. & Wada, A., 2020/03/21, In: Organic Chemistry Frontiers. 7, 6, p. 879-884 6 p.Research output: Contribution to journal › Article › peer-review
19 Scopus citations -
2019
Base-promoted lipase-catalyzed kinetic resolution of atropisomeric 1,1′-biaryl-2,2′-diols
Moustafa, G. A. I., Kasama, K., Higashio, K. & Akai, S., 2019, In: RSC Advances. 9, 3, p. 1165-1175 11 p.Research output: Contribution to journal › Article › peer-review
Open Access21 Scopus citations -
Chemo- and stereoselective six-membered oxonium ylide formation–[2,3]-sigmatropic rearrangement of 2-diazo-3-ketoesters with dirhodium(II) catalyst and its application to the synthesis of (+)-tanikolide
Jinnouchi, H., Nambu, H., Takahashi, K., Fujiwara, T. & Yakura, T., 2019/04/19, In: Tetrahedron. 75, 16, p. 2436-2445 10 p.Research output: Contribution to journal › Article › peer-review
Open Access7 Scopus citations -
Protecting-Group-Free Formal Synthesis of Aspidospermidine: Ring-Opening Cyclization of Spirocyclopropane with Amine Followed by Regioselective Alkylations
Nambu, H., Tamura, T. & Yakura, T., 2019/12/20, In: Journal of Organic Chemistry. 84, 24, p. 15990-15996 7 p.Research output: Contribution to journal › Article › peer-review
Open Access17 Scopus citations -
Ring-opening cyclization of spirocyclopropanes with stabilized sulfonium ylides for the construction of a chromane skeleton
Nambu, H., Onuki, Y., Ono, N., Tsuge, K. & Yakura, T., 2019, In: Chemical Communications. 55, 46, p. 6539-6542 4 p.Research output: Contribution to journal › Article › peer-review
Open Access22 Scopus citations -
2018
2-Iodo-N-isopropyl-5-methoxybenzamide as a highly reactive and environmentally benign catalyst for alcohol oxidation
Yakura, T., Fujiwara, T., Yamada, A. & Nambu, H., 2018, In: Beilstein Journal of Organic Chemistry. 14, p. 971-978 8 p.Research output: Contribution to journal › Article › peer-review
Open Access12 Scopus citations -
Acetic Acid as a Highly Reactive and Easily Separable Catalyst for the Oxidative Cleavage of Tetrahydrofuran-2-methanols to γ-Lactones
Yakura, T., Fujiwara, T., Nishi, H., Nishimura, Y. & Nambu, H., 2018, In: Synlett. 29, 17, p. 2316-2320 5 p.Research output: Contribution to journal › Article › peer-review
4 Scopus citations -
Divergent synthesis of (+)-tanikolide and its analogues employing stereoselective rhodium(II)-catalyzed reaction
Jinnouchi, H., Nambu, H., Fujiwara, T. & Yakura, T., 2018/03/08, In: Tetrahedron. 74, 10, p. 1059-1070 12 p.Research output: Contribution to journal › Article › peer-review
Open Access14 Scopus citations -
Divergent total synthesis of penaresidin B and its straight side chain analogue
Fujiwara, T., Hashimoto, K., Umeda, M., Murayama, S., Ohno, Y., Liu, B., Nambu, H. & Yakura, T., 2018/08/30, In: Tetrahedron. 74, 35, p. 4578-4591 14 p.Research output: Contribution to journal › Article › peer-review
13 Scopus citations -
Iodide-Catalyzed Ring-Opening Cyclization of Cyclohexane-1,3-dione-2-spirocyclopropanes
Nambu, H., Onuki, Y., Ono, N. & Yakura, T., 2018/08/06, In: Advanced Synthesis and Catalysis. 360, 15, p. 2938-2944 7 p.Research output: Contribution to journal › Article › peer-review
Open Access14 Scopus citations -
Production of a Light-Gated Proton Channel by Replacing the Retinal Chromophore with Its Synthetic Vinylene Derivative
Takayama, R., Kaneko, A., Okitsu, T., Tsunoda, S. P., Shimono, K., Mizuno, M., Kojima, K., Tsukamoto, T., Kandori, H., Mizutani, Y., Wada, A. & Sudo, Y., 2018/06/07, In: Journal of Physical Chemistry Letters. 9, 11, p. 2857-2862 6 p.Research output: Contribution to journal › Article › peer-review
13 Scopus citations -
Red-Tuning of the Channelrhodopsin Spectrum Using Long Conjugated Retinal Analogues
Shen, Y. C., Sasaki, T., Matsuyama, T., Yamashita, T., Shichida, Y., Okitsu, T., Yamano, Y., Wada, A., Ishizuka, T., Yawo, H. & Imamoto, Y., 2018/09/25, In: Biochemistry. 57, 38, p. 5544-5556 13 p.Research output: Contribution to journal › Article › peer-review
Open Access11 Scopus citations -
Retinal Configuration of ppR Intermediates Revealed by Photoirradiation Solid-State NMR and DFT
Makino, Y., Kawamura, I., Okitsu, T., Wada, A., Kamo, N., Sudo, Y., Ueda, K. & Naito, A., 2018/07/03, In: Biophysical Journal. 115, 1, p. 72-83 12 p.Research output: Contribution to journal › Article › peer-review
Open Access12 Scopus citations -
Silyl Group-Directed 6-exo-dig Iodocyclization of Homopropargylic Carbamates and Amides
Okitsu, T., Nakahigashi, H., Sugihara, R., Fukuda, I., Tsuji, S., In, Y. & Wada, A., 2018/12/12, In: Chemistry - A European Journal. 24, 70, p. 18638-18642 5 p.Research output: Contribution to journal › Article › peer-review
5 Scopus citations -
2017
3-Methylene-4-amido-1,2-diazetidine as a Formal 1,4-Dipole Precursor: Lewis Acid-Catalyzed Nucleophilic Addition with Silylated Nucleophiles
Okitsu, T., Kobayashi, K., Kan, R., Yoshida, Y., Matsui, Y. & Wada, A., 2017/09/01, In: Organic Letters. 19, 17, p. 4592-4595 4 p.Research output: Contribution to journal › Article › peer-review
13 Scopus citations -
Alternative formation of red-shifted channelrhodopsins: Noncovalent incorporation with retinal-based enamine-type schiff bases and mutated channelopsin
Okitsu, T., Matsuyama, T., Yamashit, T., Ishizuk, T., Yawo, H., Imamoto, Y., Shichid, Y. & Wada, A., 2017, In: Chemical and Pharmaceutical Bulletin. 65, 4, p. 356-358 3 p.Research output: Contribution to journal › Article › peer-review
Open Access3 Scopus citations -
An Efficient Route to Highly Substituted Indoles via Tetrahydroindol-4(5H)-one Intermediates Produced by Ring-Opening Cyclization of Spirocyclopropanes with Amines
Nambu, H., Hirota, W., Fukumoto, M., Tamura, T. & Yakura, T., 2017/11/27, In: Chemistry - A European Journal. 23, 66, p. 16799-16805 7 p.Research output: Contribution to journal › Article › peer-review
Open Access21 Scopus citations -
Development of novel catalytic system, iodoarene-Oxone®, on hypervalent iodine oxidation of phenols and alcohols
Yakura, T., Nambu, H. & Fujiwara, T., 2017, In: Yuki Gosei Kagaku Kyokaishi/Journal of Synthetic Organic Chemistry. 75, 3, p. 209-218 10 p.Research output: Contribution to journal › Article › peer-review
1 Scopus citations -
Solid-state nuclear magnetic resonance structural study of the retinal-binding pocket in sodium ion pump rhodopsin
Shigeta, A., Ito, S., Inoue, K., Okitsu, T., Wada, A., Kandori, H. & Kawamura, I., 2017/01/31, In: Biochemistry. 56, 4, p. 543-550 8 p.Research output: Contribution to journal › Article › peer-review
27 Scopus citations