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Abe T, Hirao S, Kitamori M, Itoh T, Chiba Y. A Mild Bischler–Napieralski-Type Cyclization of Trichloromethyl Carbamates for the Synthesis of β-Carbolinones. HETEROCYCLES 2020. [DOI: 10.3987/com-19-s(f)19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Abe T, Aoyama S, Ohmura M, Taniguchi M, Yamada K. Revisiting Furodiindolines: One-Pot Synthesis of Furodiindolines Using Indole 2,3-Epoxide Surrogates and Their Synthetic Applications. Org Lett 2019; 21:3367-3371. [PMID: 30997809 DOI: 10.1021/acs.orglett.9b01108] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Furodiindolines have emerged as versatile intermediates in various transformations, which are easily obtained from indole 2,3-epoxide surrogates via a one-pot procedure and allowed access to heterocyclic compounds with structural diversity and complexity. Four types of transformations from the furodiindolines have been achieved: (i) dehydrative rearrangement to afford 2,3'-biindoles, (ii) hydrolysis/cyclization to give 3,4-disubstituted quinolines, (iii) ring-opening/cyclization to give pyrroloindolines, and (iv) aminal cleavage to give a 3,3-disubstituted 2-oxindole.
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Affiliation(s)
- Takumi Abe
- Faculty of Pharmaceutical Sciences , Health Sciences University of Hokkaido , Ishikari-tobetsu, Hokkaido 0610293 , Japan
| | - Sakura Aoyama
- Faculty of Pharmaceutical Sciences , Health Sciences University of Hokkaido , Ishikari-tobetsu, Hokkaido 0610293 , Japan
| | - Masami Ohmura
- Faculty of Pharmaceutical Sciences , Health Sciences University of Hokkaido , Ishikari-tobetsu, Hokkaido 0610293 , Japan
| | - Masato Taniguchi
- Faculty of Pharmaceutical Sciences , Health Sciences University of Hokkaido , Ishikari-tobetsu, Hokkaido 0610293 , Japan
| | - Koji Yamada
- Faculty of Pharmaceutical Sciences , Health Sciences University of Hokkaido , Ishikari-tobetsu, Hokkaido 0610293 , Japan
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Abe T, Kosaka Y, Asano M, Harasawa N, Mishina A, Nagasue M, Sugimoto Y, Katakawa K, Sueki S, Anada M, Yamada K. Direct C4-Benzylation of Indoles via Tandem Benzyl Claisen/Cope Rearrangements. Org Lett 2019; 21:826-829. [DOI: 10.1021/acs.orglett.8b04120] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Takumi Abe
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Yuta Kosaka
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Miku Asano
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Natsuki Harasawa
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Akane Mishina
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Misato Nagasue
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Yuri Sugimoto
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
| | - Kazuaki Katakawa
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi 202-8585, Japan
| | - Shunsuke Sueki
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi 202-8585, Japan
| | - Masahiro Anada
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi 202-8585, Japan
| | - Koji Yamada
- Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 061-0293, Japan
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