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Effects of acid-mediated deamination of cytidine and 5-methylcytidine on solid-phase synthesis of oligonucleotides
Yusuke Isono, Chihiro Karasugi, Takuya Akisawa, Takashi Osawa, Qin Ren, Michiaki Tatsuno, Fumi Ito, Takao Inoue, Junji Kawakami, Satoshi Obika, Masaki Shinoda
Tetrahedron Vol. 185 2025年7月 研究論文(学術雑誌)
出版者・発行元:Elsevier BV
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Antisense oligonucleotide targeting nicotinamide N-methyltransferase exhibits antitumor effects
Tomoaki Hara, Sikun Meng, Yuuya Kasahara, Takashi Osawa, Daisuke Motooka, Hiromichi Sato, Yasuko Arao, Yoshiko Saito, Kana Inoue, Yumiko Hamano, Yuichiro Doki, Hidetoshi Eguchi, Satoshi Obika, Hideshi Ishii
Molecular Therapy Nucleic Acids 2025年4月 研究論文(学術雑誌)
出版者・発行元:Elsevier BV
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Synthesis and structural analysis of dinucleotides containing 2′,3′-trans-bridged nucleic acids with trans-5,6- or 5,7-fused ring skeleton
Takashi Osawa, Ryota Nakanishi, Keito Uda, So Muramoto, Satoshi Obika
Communications Chemistry Vol. 8 No. 1 2025年3月22日 研究論文(学術雑誌)
出版者・発行元:Springer Science and Business Media LLC
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Synthesis of Coumarin-oligonucleiotide Conjugates for Application in DNA-encoded Libraries
Takashi Osawa
YAKUGAKU ZASSHI-JOURNAL OF THE PHARMACEUTICAL SOCIETY OF JAPAN Vol. 144 No. 10 p. 931-936 2024年10月
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In vitro screening of chemically synthesized dipeptide-antisense oligonucleotide conjugates to identify ligand molecules enhancing their activity
Takashi Osawa, Ryosuke Kita, Yuuya Kasahara, Harumi Yamaguma, Taisuke Nakayama, Haruhiko Kamada, Satoshi Obika
Bioorganic & Medicinal Chemistry Vol. 110 2024年8月1日 研究論文(学術雑誌)
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THF peroxide as a factor in generating desulphurised products from the solid-phase synthesis of phosphorothioate-modified oligonucleotides
Qin Ren, Takashi Osawa, Michiaki Tatsuno, Satoshi Obika
RSC Advances Vol. 14 No. 30 p. 21590-21596 2024年7月8日 研究論文(学術雑誌)
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Light-controllable cell-membrane disturbance for intracellular delivery.
Wenting Huo, Koji Miki, Huiying Mu, Takashi Osawa, Harumi Yamaguma, Yuuya Kasahara, Satoshi Obika, Yoshimasa Kawaguchi, Hisaaki Hirose, Shiroh Futaki, Yusuke Miyazaki, Wataru Shinoda, Shuji Akai, Kouichi Ohe
Journal of materials chemistry. B 2024年5月7日 研究論文(学術雑誌)
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Synthesis of Coumarin-Conjugated Oligonucleotides via Knoevenagel Condensation to Prepare an Oligonucleotide Library
Takashi Osawa, Satoshi Obika
Chemical and Pharmaceutical Bulletin Vol. 74 No. 2 p. 143-148 2024年2月1日 研究論文(学術雑誌)
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Synthesis, Duplex-Forming Ability, and Enzymatic Stability of Oligonucleotides Modified with Amide-Linked Dinucleotides Containing a 3',4'-Tetrahydropyran-Bridged Nucleic Acid.
Takashi Osawa, Taiki Akino, Satoshi Obika
The Journal of organic chemistry Vol. 89 No. 1 p. 269-280 2024年1月5日 研究論文(学術雑誌)
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Development of simple purification method for oligonucleotides synthesized using phosphoramidite for 5′-end modification as capping reagent
Qin Ren, Takashi Osawa, Satoshi Obika
Tetrahedron Vol. 150 2024年1月 研究論文(学術雑誌)
出版者・発行元:Elsevier BV
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Post-Synthetic Nucleobase Modification of Oligodeoxynucleotides by Sonogashira Coupling and Influence of Alkynyl Modifications on the Duplex-Forming Ability.
Atsushi Mikami, Shohei Mori, Takashi Osawa, Satoshi Obika
Chemistry A European Journal Vol. 29 No. 63 2023年11月13日 研究論文(学術雑誌)
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強塩基処理できないオリゴ核酸の3′-アミノリンカー修飾法の開発
大澤昂志
日本核酸化学会誌 No. 7 p. 3-8 2023年11月
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複数種の液体クロマトグラフ質量分析計を用いたモデル核酸医薬品の分析データの比較
廣瀬賢治, 吉田徳幸, 寺崎真樹, 瀬崎浩史, 唐澤薫, 岩崎了教, 高原健太郎, 滝口直美, 関口光明, 南海浩一, 斎藤恵美, 佐藤秀昭, 大澤昂志, 山口卓男, 伊藤浩介, 川上純司, 小比賀聡, 井上貴雄
医薬品医療機器レギュラトリーサイエンス Vol. 54 No. 5 2023年
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Synthesis and biophysical properties of tetravalent PEG-conjugated antisense oligonucleotide
Taslima Rahman Chowdhury, Tahia Taufiq, Kenta Ishida, Md Ariful Islam, Yuuya Kasahara, Takashi Osawa, Satoshi Obika
Bioorganic & Medicinal Chemistry Vol. 78 2023年1月 研究論文(学術雑誌)
出版者・発行元:Elsevier BV
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Development of Phosphoramidite Reagents for the Synthesis of Base-Labile Oligonucleotides Modified with a Linear Aminoalkyl and Amino-PEG Linker at the 3′-End
Takashi Osawa, Qin Ren, Satoshi Obika
Molecules Vol. 27 No. 23 2022年12月3日 研究論文(学術雑誌)
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Synthesis and physical and biological properties of 1,3-diaza-2-oxophenoxazine-conjugated oligonucleotides.
Ryohei Yamaji, Osamu Nakagawa, Yuki Kishimoto, Akane Fujii, Tomoki Matsumura, Taisuke Nakayama, Haruhiko Kamada, Takashi Osawa, Takao Yamaguchi, Satoshi Obika
Bioorganic & Medicinal Chemistry Vol. 72 p. 116972-116972 2022年10月15日 研究論文(学術雑誌)
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Synthesis, Duplex-Forming Ability, and Nuclease Resistance of Oligonucleotides Containing a Thymidine Derivative with a 1-Oxaspiro[4.5]decane Skeleton.
Takashi Osawa, Natsumi Yano, Hiroshi Aoyama, Satoshi Obika
Chemical & Pharmaceutical Bulletin Vol. 70 No. 10 p. 699-706 2022年10月 研究論文(学術雑誌)
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Synthesis and Properties of Oligonucleotides Containing 2'-O,4'-C-Methyleneoxy-Bridged Pyrimidine Derivatives.
Misa Shoji, Yasufumi Fuchi, Takashi Osawa, Han Kim, Yuta Ito, Yoshiyuki Hari
The Journal of Organic Chemistry Vol. 87 No. 17 p. 11743-11750 2022年9月2日 研究論文(学術雑誌)
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Conjugation of oligonucleotides with activated carbamate reagents prepared by the Ugi reaction for oligonucleotide library synthesis
Ryosuke Kita, Takashi Osawa, Satoshi Obika
RSC Chemical Biology Vol. 3 No. 6 p. 728-738 2022年6月 研究論文(学術雑誌)
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Synthesis of Sugar and Nucleoside Analogs and Evaluation of Their Anticancer and Analgesic Potentials.
Fahad Hussain, Fahad Imtiaz Rahman, Poushali Saha, Atsushi Mikami, Takashi Osawa, Satoshi Obika, S M Abdur Rahman
Molecules (Basel, Switzerland) Vol. 27 No. 11 2022年5月29日 研究論文(学術雑誌)
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New Cleavable Spacers for Tandem Synthesis of Multiple Oligo-nucleotides
Kazuki Yamamoto, Yasufumi Fuchi, Masaya Okabe, Takashi Osawa, Yuta Ito, Yoshiyuki Hari
SYNTHESIS-STUTTGART 2021年6月 研究論文(学術雑誌)
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The effect of the base triplets adjacent to A T•CG OR 5-methylc•CG triplet in the triplex DNA
Yuta Ito, Chisa Hama, Takashi Osawa, Yoshiyuki Hari
Heterocycles Vol. 103 No. 1 2021年 研究論文(学術雑誌)
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Synthesis and properties of oligonucleotides bearing thymidine derivatives with 1,6-dioxaspiro[4.5]decane skeleton.
Takashi Osawa, Miho Kawaguchi, Ye-Jin Jang, Yuta Ito, Yoshiyuki Hari
Bioorganic & medicinal chemistry Vol. 31 2020年12月23日 研究論文(学術雑誌)
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Synthesis of Oligonucleotides Containing 2'-N-alkylaminocarbonyl-2'-amino-LNA (2'-urea-LNA) Moieties Using Post-Synthetic Modification Strategy.
Shoko Yamashita, Kodai Nishida, Takashi Osawa, Ayumi Nakanishi, Yuta Ito, Yoshiyuki Hari
Molecules (Basel, Switzerland) Vol. 25 No. 2 2020年1月15日
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Synthesis and hybridizing property of oligonucleotides including 2'-C,4'-C-ethyleneoxy-bridged 2'-deoxyadenosine with an exocyclic methylene unit
Osawa T, Onishi Y, Wakita S, Ito Y, Hari Y
Heterocycles Vol. 101 No. 1 p. 284-297 2020年 研究論文(学術雑誌)
出版者・発行元:
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Synthesis of 2'-C,4'-C-Methyleneoxy-Bridged Thymidine Derivatives and Properties of Modified Oligonucleotides.
Osawa T, Kim H, Shoji M, Saijo M, Dohi M, Ito Y, Obika S, Hari Y
The Journal of organic chemistry Vol. 84 No. 21 p. 13336-13342 2019年10月 研究論文(学術雑誌)
出版者・発行元:
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Synthesis of the Methyl Analog of 2'-O,4'-C-Ethylene-Bridged 5-Methyluridine via Intramolecular Radical Cyclization and Properties of Modified Oligonucleotides.
Ito Y, Tsutsui N, Osawa T, Hari Y
The Journal of organic chemistry Vol. 84 No. 14 p. 9093-9100 2019年7月 研究論文(学術雑誌)
出版者・発行元:
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SYNTHESIS AND HYBRIDIZATION PROPERTIES OF OLIGONUCLEOTIDES INCLUDING 2 '-N-ALKOXYCARBONYL-2 '-AMINO-LNA DERIVATIVES
Osawa Takashi, Yamashita Shoko, Nakanishi Ayumi, Ito Yuta, Hari Yoshiyuki
HETEROCYCLES Vol. 99 No. 1 p. 502-520 2019年4月1日 研究論文(学術雑誌)
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2′-C,4′-C-Ethyleneoxy-Bridged 2′-Deoxyribonucleic Acids (EoDNAs) with thymine nucleobases: Synthesis, duplex-forming ability, and enzymatic stability
Takashi Osawa, Satoshi Obika, Yoshiyuki Hari
Methods in Molecular Biology Vol. 1973 p. 59-89 2019年 論文集(書籍)内論文
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Post-synthetic modification of oligonucleotides containing 5-trifluoromethylpyrimidine bases
Ito Yuta, Matsuo Misaki, Yamamoto Kazuki, Yamashita Wakana, Osawa Takashi, Hari Yoshiyuki
TETRAHEDRON Vol. 74 No. 47 p. 6854-6860 2018年11月22日 研究論文(学術雑誌)
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SYNTHESIS AND PROPERTIES OF OLIGONUCLEOTIDES CONTAINING 3'-O,4'-C-ETHYLENEOXY-BRIDGED 5-METHYLURIDINES
Osawa Takashi, Hitomi Yuka, Wakita Sawako, Kim Han, Dohi Masakazu, Horiba Masahiko, Ito Yuta, Obika Satoshi, Hari Yoshiyuki
HETEROCYCLES Vol. 97 No. 1 p. 306-313 2018年9月18日 研究論文(学術雑誌)
出版者・発行元:
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Photoredox-Catalyzed Deformylative 1,4-Addition of 2'-Deoxy-5'-O-phthalimidonucleosides for Synthesis of 5'-Carba Analogs of Nucleoside 5'-Phosphates
Ito Yuta, Kimura Airi, Osawa Takashi, Hari Yoshiyuki
JOURNAL OF ORGANIC CHEMISTRY Vol. 83 No. 18 p. 10701-10708 2018年9月 研究論文(学術雑誌)
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Synthesis and hybridizing properties of isoDNAs including 3′-O,4′-C-ethyleneoxy-bridged 5-methyluridine derivatives
Takashi Osawa, Yuka Hitomi, Sawako Wakita, Han Kim, Yuta Ito, Yoshiyuki Hari
Bioorganic and Medicinal Chemistry Vol. 26 No. 14 p. 3875-3881 2018年 研究論文(学術雑誌)
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Triplex- and Duplex-Forming Abilities of Oligonucleotides Containing 2 '-Deoxy-5-trifluoromethyluridine and 2 '-Deoxy-5-trifluoromethylcytidine
Yuta Ito, Misaki Matsuo, Takashi Osawa, Yoshiyuki Hari
CHEMICAL & PHARMACEUTICAL BULLETIN Vol. 65 No. 10 p. 982-988 2017年10月 研究論文(学術雑誌)
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Synthesis, duplex-forming ability, enzymatic stability, and in vitro antisense potency of oligonucleotides including 2'-C,4'-C-ethyleneoxy-bridged thymidine derivatives
Takashi Osawa, Motoki Sawamura, Fumito Wada, Tsuyoshi Yamamoto, Satoshi Obika, Yoshiyuki Hari
ORGANIC & BIOMOLECULAR CHEMISTRY Vol. 15 No. 18 p. 3955-3963 2017年5月 研究論文(学術雑誌)
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SYNTHESIS OF THE 5-METHYLURIDINE MONOMER OF 3 '-O,4 '-C-ETHYLENEOXY-BRIDGED NUCLEIC ACID
Takashi Osawa, Masakazu Dohi, Yuka Hitomi, Yuta Ito, Satoshi Obika, Yoshiyuki Hari
HETEROCYCLES Vol. 95 No. 1 p. 342-352 2017年1月 研究論文(学術雑誌)
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Synthesis and properties of novel 2 '-C,4 '-C-ethyleneoxy-bridged 2 '-deoxyribonucleic acids with exocyclic methylene groups
Takashi Osawa, Satoshi Obika, Yoshiyuki Hari
ORGANIC & BIOMOLECULAR CHEMISTRY Vol. 14 No. 40 p. 9481-9484 2016年10月 研究論文(学術雑誌)
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Synthesis and Properties of the 5-Methyluridine Derivative of 3,4-Dihydro-2H-pyran-Bridged Nucleic Acid (DpNA)
Takashi Osawa, Yoshiyuki Hari, Masakazu Dohi, Yuya Matsuda, Satoshi Obika
JOURNAL OF ORGANIC CHEMISTRY Vol. 80 No. 21 p. 10474-10481 2015年11月 研究論文(学術雑誌)
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Synthesis and properties of thymidines with six-membered amide bridge
Yoshiyuki Hari, Takashi Osawa, Yutaro Kotobuki, Aiko Yahara, Ajaya R. Shrestha, Satoshi Obika
Bioorganic and Medicinal Chemistry Vol. 21 No. 14 p. 4405-4412 2013年7月15日 研究論文(学術雑誌)
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Synthesis and Properties of 2 '-O,4 '-C-Ethyleneoxy Bridged 5-Methyluridine
Yoshiyuki Hari, Tomohiko Morikawa, Takashi Osawa, Satoshi Obika
ORGANIC LETTERS Vol. 15 No. 14 p. 3702-3705 2013年7月 研究論文(学術雑誌)
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Amido-Bridged Nucleic Acids (AmNAs): Synthesis, Duplex Stability, Nuclease Resistance, and in Vitro Antisense Potency
Aiko Yahara, Ajaya Ram Shrestha, Tsuyoshi Yamamoto, Yoshiyuki Hari, Takashi Osawa, Masaki Yamaguchi, Masaru Nishida, Tetsuya Kodama, Satoshi Obika
CHEMBIOCHEM Vol. 13 No. 17 p. 2513-2516 2012年11月 研究論文(学術雑誌)
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Synthesis and duplex-forming ability of oligonucleotides containing 4 '-carboxythymidine
Yoshiyuki Hari, Takashi Osawa, Satoshi Obika
ORGANIC & BIOMOLECULAR CHEMISTRY Vol. 10 No. 48 p. 9639-9649 2012年 研究論文(学術雑誌)
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Synthesis and Properties of a Bridged Nucleic Acid with a Perhydro-1,2-oxazin-3-one Ring
Ajaya R. Shrestha, Yoshiyuki Hari, Aiko Yahara, Takashi Osawa, Satoshi Obika
JOURNAL OF ORGANIC CHEMISTRY Vol. 76 No. 24 p. 9891-9899 2011年12月 研究論文(学術雑誌)