Zobrazeno 1 - 10 of 259 pro vyhledávání: '"Takayoshi Arai"'
1
Akademický článek
Development of a novel light-up probe for detection of G-quadruplexes in stress granules
Autor: Keisuke Iida, Natsumi Suzuki, Ayano Sasaki, Shunsuke Ishida, Takayoshi Arai
Publikováno v: Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022)
Abstract G-quadruplexes (G4s) regulate various biological processes in cells. However, cellular imaging of dynamically forming G4s in biomolecular condensates using small molecules has been poorly investigated. Herein, we present a fluorescent light-
Externí odkaz: https://doaj.org/article/86277afa2f6a49ce80c1333373ea0c3a
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2
Akademický článek
Association of Halogen Bonding and Hydrogen Bonding in Metal Acetate-Catalyzed Asymmetric Halolactonization
Autor: Takayoshi Arai, Kodai Horigane, Ohji Watanabe, Junki Kakino, Noriyuki Sugiyama, Hiroki Makino, Yuto Kamei, Shinnosuke Yabe, Masahiro Yamanaka
Publikováno v: iScience, Vol 12, Iss , Pp 280-292 (2019)
Summary: Cooperative activation using halogen bonding and hydrogen bonding works in metal-catalyzed asymmetric halolactonization. The Zn3(OAc)4-3,3′-bis(aminoimino)binaphthoxide (tri-Zn) complex catalyzes both asymmetric iodolactonization and bromo
Externí odkaz: https://doaj.org/article/9502e03c9184489d9f24308a2c614ff2
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3
Akademický článek
Dinuclear PhosphoiminoBINOL-Pd Container for Malononitrile: Catalytic Asymmetric Double Mannich Reaction for Chiral 1,3-Diamine Synthesis
Autor: Takayoshi Arai, Katsuya Sato, Ayu Nakamura, Hiroki Makino, Hyuma Masu
Publikováno v: Scientific Reports, Vol 8, Iss 1, Pp 1-8 (2018)
Abstract A phosphoiminoBINOL ligand was designed to form a dinuclear metal complex that could hold a malononitrile molecule. The dinuclear bis(phosphoimino)binaphthoxy-Pd2(OAc)2 complex catalyzed a double Mannich reaction of N-Boc-imines with malonon
Externí odkaz: https://doaj.org/article/3aba38173d474b4281e90a6baef4cb64
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4
Akademický článek
Chiral Bis(Imidazolidine)Pyridine-Cu Complex-Catalyzed Enantioselective [3+2]-Cycloaddition of Azomethine Imines with Propiolates
Autor: Yuta Ogino, Takayoshi Arai
Publikováno v: Molecules, Vol 17, Iss 5, Pp 6170-6178 (2012)
[3+2] Cycloaddition of azomethine imines with electron-deficient terminal alkynes was smoothly catalyzed by a chiral bis(imidazolidine)pyridine-CuOAc complex to give bicyclic pyrazolo[1,2-a]pyrazolone derivatives with up to 74% ee.
Externí odkaz: https://doaj.org/article/8c20242e379a46e08e43e1f423f771dc
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9
Akademický článek
Catalytic Asymmetric Iodoesterification of Simple Alkenes.
Autor: Takayoshi Arai1 tarai@faculty.chiba-u.jp, Kodai Horigane1, Suzuki, Takumi K.1, Ryosuke Itoh2, Masahiro Yamanaka2
Publikováno v: Angewandte Chemie. 7/27/2020, Vol. 132 Issue 31, p12680-12683. 4p.
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10
A Hypervalent Cyclic Dibenzoiodolium Salt as a Halogen‐Bond‐Donor Catalyst for the [4+2] Cycloaddition of 2‐Alkenylindoles
Autor: Yuki Nishida, Takumi Suzuki, Satoru Kuwano, Takayoshi Arai, Yuri Takagi, Emi Amma, Ryoya Tajima
Publikováno v: ChemPlusChem. 86:741-744
A stable, hypervalent cyclic dibenzoiodolium salt acted as a strong halogen bonding (XB)-donor catalyst for [4+2] cycloaddition of 2-alkenylindoles, and not as an oxidizing agent. The cross-[4+2] cycloaddition of 2-vinylindoles with 2-alkenylindoles
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46faaffd2b6ac3cb568a6e6d8b3559bb
https://doi.org/10.1002/cplu.202100089
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