1
|
Hatakenaka R, Nishikawa N, Mikata Y, Aoyama H, Yamashita K, Shiota Y, Yoshizawa K, Kawasaki Y, Tomooka K, Kamijo S, Tani F, Murafuji T. Efficient Synthesis and Structural Analysis of Chiral 4,4'-Biazulene. Chemistry 2024; 30:e202400098. [PMID: 38376431 DOI: 10.1002/chem.202400098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/20/2024] [Accepted: 02/20/2024] [Indexed: 02/21/2024]
Abstract
4,4'-Biazulene is a potentially attractive key component of an axially chiral biaryl compound, however, its structure and properties have not been clarified owing to the lack of its efficient synthesis. We report a breakthrough in the reliable synthesis of 4,4'-biazulene, which is achieved by the access to azulen-4-ylboronic acid pinacol ester and 4-iodoazulene as novel key synthetic intermediates for the Suzuki-Miyaura cross-coupling reaction. The X-ray crystallographic analysis of 4,4'-biazulene confirmed its axial chirality. The enantiomers of 4,4'-biazulene were successfully resolved by HPLC on the chiral stationary phase column. The kinetic experiments and DFT calculations indicate that the racemization energy barrier of 4,4'-biazulene is comparable to that of 1,1'-binaphthyl.
Collapse
Affiliation(s)
- Ryoji Hatakenaka
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8512, Japan
| | - Nanami Nishikawa
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8512, Japan
| | - Yuji Mikata
- Laboratory for Molecular & Functional Design, Department of Engineering, Nara Women's University, Nara, 630-8506, Japan
| | - Hiroki Aoyama
- Graduate School of Science, Kyushu University, Fukuoka, 819-0395, Japan
| | - Kohsuke Yamashita
- Graduate School of Engineering, Kyushu University, Fukuoka, 819-0395, Japan
| | - Yoshihito Shiota
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Yuuya Kawasaki
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan
| | - Katsuhiko Tomooka
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan
| | - Shin Kamijo
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8512, Japan
| | - Fumito Tani
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Toshihiro Murafuji
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8512, Japan
| |
Collapse
|
2
|
Maruoka K, Suzuki R, Kamishima T, Koseki Y, Ngoc Dao AT, Murafuji T, Kasai H. Total Synthesis of Azulene Derivative, a Blue Pigment Isolated from Lactarius indigo, and Colorant Application of Its Aqueous Dispersion. J Agric Food Chem 2023. [PMID: 37437259 DOI: 10.1021/acs.jafc.3c02387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
Safety concerns in the food industry have increased the demand for natural food colorants. However, the application ranges of natural blue colorants are insufficient because they are scarce in nature, and the currently available natural blue dyes are limited to water-soluble products. In this study, we investigated a fat-soluble azulene derivative isolated from the mushroom Lactarius indigo as a potential candidate for a natural blue colorant. We developed its first total synthesis, where the azulene skeleton was constructed from a pyridine derivative and an ethynyl group was converted into an isopropenyl group using zirconium complexes. Moreover, nanoparticles of the azulene derivative were prepared via reprecipitation method, and their colorant ability was investigated in aqueous solutions. The new candidate food colorant exhibited a deep-blue color in an organic solvent and aqueous dispersion.
Collapse
Affiliation(s)
- Kiyotaka Maruoka
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Ryuju Suzuki
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Takaaki Kamishima
- East Tokyo Laboratory, Genesis Research Institute, Inc., 717-86 Futamata, Ichikawa, Chiba 272-0001, Japan
| | - Yoshitaka Koseki
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Anh Thi Ngoc Dao
- Graduate School of Engineering, Nagasaki University, 1-14 Bunkyo, Nagasaki, Nagasaki 852-8521, Japan
| | - Toshihiro Murafuji
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi 753-8512, Japan
| | - Hitoshi Kasai
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| |
Collapse
|
3
|
Maruoka K, Kamishima T, Koseki Y, Suzuki R, Dao ATN, Murafuji T, Kasai H. Versatile Conversions of Substituents in Guaiazulene: Synthesis of Carboxylic Acid Derivatives with Controlled Regiospecific Reactivities. BCSJ 2022. [DOI: 10.1246/bcsj.20220122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kiyotaka Maruoka
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Takaaki Kamishima
- East Tokyo Laboratory, Genesis Research Institute, Inc., 717-86 Futamata, Ichikawa, Chiba 272-0001, Japan
| | - Yoshitaka Koseki
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Ryuju Suzuki
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Anh Thi Ngoc Dao
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Toshihiro Murafuji
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Hitoshi Kasai
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| |
Collapse
|
4
|
Tani F, Narita M, Murafuji T. Helicene Radicals: Molecules Bearing a Combination of Helical Chirality and Unpaired Electron Spin. Chempluschem 2020; 85:2093-2104. [DOI: 10.1002/cplu.202000452] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 08/19/2020] [Indexed: 12/25/2022]
Affiliation(s)
- Fumito Tani
- Institute for Materials Chemistry and Engineering Kyushu University Fukuoka 819-0395 Japan
| | - Masahiro Narita
- Institute for Materials Chemistry and Engineering Kyushu University Fukuoka 819-0395 Japan
| | - Toshihiro Murafuji
- Graduate School of Sciences and Technology for Innovation Yamaguchi University Yamaguchi 753-8512 Japan
| |
Collapse
|
5
|
Tashiro K, Murafuji T, Sumimoto M, Fujitsuka M, Yamazaki S. The formation mechanism of ZnTPyP fibers fabricated by a surfactant-assisted method. NEW J CHEM 2020. [DOI: 10.1039/d0nj02829k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Zn–N coordination and the sphere-to-rod transition of CTAB micelles contribute concertedly to the formation of ZnTPyP fibers.
Collapse
Affiliation(s)
- Keigo Tashiro
- Division of Natural Science, Graduate School of Sciences and Technology for Innovation
- Yamaguchi University
- Yamaguchi 753-8512
- Japan
| | - Toshihiro Murafuji
- Division of Natural Science, Graduate School of Sciences and Technology for Innovation
- Yamaguchi University
- Yamaguchi 753-8512
- Japan
| | - Michinori Sumimoto
- Division of Applied Chemistry, Graduate School of Sciences and Technology for Innovation
- Yamaguchi University
- Ube, 755-8611
- Japan
| | - Mamoru Fujitsuka
- The Institute of Scientific and Industrial Research (SANKEN)
- Osaka University
- Osaka 567-0047
- Japan
| | - Suzuko Yamazaki
- Division of Natural Science, Graduate School of Sciences and Technology for Innovation
- Yamaguchi University
- Yamaguchi 753-8512
- Japan
| |
Collapse
|
6
|
Narita M, Teraoka T, Murafuji T, Shiota Y, Yoshizawa K, Mori S, Uno H, Kanegawa S, Sato O, Goto K, Tani F. An Azulene-Based Chiral Helicene and Its Air-Stable Cation Radical. BCSJ 2019. [DOI: 10.1246/bcsj.20190219] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Masahiro Narita
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Takaaki Teraoka
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Toshihiro Murafuji
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Yoshihito Shiota
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Shigeki Mori
- Advanced Research Support Center, Ehime University, Matsuyama, Ehime 790-8577, Japan
| | - Hidemitsu Uno
- Graduate School of Science and Engineering, Ehime University, Matsuyama, Ehime 790-8577, Japan
| | - Shinji Kanegawa
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Kenta Goto
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Fumito Tani
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 819-0395, Japan
| |
Collapse
|
7
|
Kamijo S, Kamijo K, Murafuji T. Aryl Ketone Mediated Photoinduced Radical Coupling for the Alkylation of Benzazoles Employing Saturated Heterocyclic Compounds. SYNTHESIS-STUTTGART 2019. [DOI: 10.1055/s-0037-1611895] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
An aryl ketone mediated synthesis of 2-alkylated benzazoles was achieved via radical coupling under photoirradiation starting from saturated heterocycles and 2-sulfonylated benzazoles, such as benzothiazoles, benzoxazole, and benzimidazole. Heterocyclic compounds, including a cyclic ether, azacycles, and tetrahydrothiophene, were applicable, and the benzazole unit was site-selectively installed at the carbon center proximal to the heteroatom. The present transformation takes place at ambient temperature under neutral reaction conditions without the aid of any metallic catalysts or reagents.
Collapse
Affiliation(s)
- Shin Kamijo
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University
| | | | | |
Collapse
|
8
|
Narita M, Murafuji T, Yamashita S, Fujinaga M, Hiyama K, Oka Y, Tani F, Kamijo S, Ishiguro K. Synthesis of 2-Iodoazulenes by the Iododeboronation of Azulen-2-ylboronic Acid Pinacol Esters with Copper(I) Iodide. J Org Chem 2018; 83:1298-1303. [DOI: 10.1021/acs.joc.7b02820] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Masahiro Narita
- Graduate
School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Toshihiro Murafuji
- Graduate
School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi 753-8512, Japan
- Department
of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi 753-8512, Japan
- Graduate
School of Medicine, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Saki Yamashita
- Department
of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Masayuki Fujinaga
- Graduate
School of Medicine, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Kumiko Hiyama
- Graduate
School of Medicine, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Yurie Oka
- Graduate
School of Medicine, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Fumito Tani
- Institute
for Materials Chemistry and Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Shin Kamijo
- Graduate
School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi 753-8512, Japan
- Department
of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Katsuya Ishiguro
- Graduate
School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi 753-8512, Japan
- Department
of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi 753-8512, Japan
| |
Collapse
|
9
|
Murafuji T, F. M. Hafizur Rahman A, Yamashita K, Narita M, Ishiguro K, Kamijo S, Miyakawa I, Mikata Y. Synthesis and Antifungal Activities of Pyridine Bioisosteres of a Bismuth Heterocycle Derived from Diphenyl Sulfone. HETEROCYCLES 2018. [DOI: 10.3987/com-18-13876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
10
|
Abstract
The synthesis of alkylated pyrimidines was achieved via benzophenone-mediated photoinduced coupling between saturated heterocycles and sulfonylpyrimidines. The pyrimidine ring was selectively introduced at the nonacidic C(sp3)-H bond proximal to heteroatoms including oxygen, nitrogen, and sulfur. This is a coupling reaction mediated solely by photoexcited benzophenone, an organic molecule, without the aid of any metallic catalysts or reagents.
Collapse
Affiliation(s)
- Shin Kamijo
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University , Yamaguchi 753-8512, Japan
| | - Kaori Kamijo
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University , Yamaguchi 753-8512, Japan
| | - Toshihiro Murafuji
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University , Yamaguchi 753-8512, Japan
| |
Collapse
|
11
|
|
12
|
Affiliation(s)
- Shin Kamijo
- Graduate School of Sciences and Technology for Innovation and ‡Department of
Biology and Chemistry, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Kaori Kamijo
- Graduate School of Sciences and Technology for Innovation and ‡Department of
Biology and Chemistry, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Kiyotaka Maruoka
- Graduate School of Sciences and Technology for Innovation and ‡Department of
Biology and Chemistry, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Toshihiro Murafuji
- Graduate School of Sciences and Technology for Innovation and ‡Department of
Biology and Chemistry, Yamaguchi University, Yamaguchi 753-8512, Japan
| |
Collapse
|
13
|
Murafuji T, Tasaki Y, Fujinaga M, Tao K, Kamijo S, Ishiguro K. Blue Amino Acids Derived from Azulen-1-ylboronic Acid Pinacol Ester via the Petasis Reaction. SYNTHESIS-STUTTGART 2016. [DOI: 10.1055/s-0036-1588907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Toshihiro Murafuji
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University
| | | | | | - Keisuke Tao
- Graduate School of Science and Engineering, Yamaguchi University
| | - Shin Kamijo
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University
| | - Katsuya Ishiguro
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University
| |
Collapse
|
14
|
Kamijo S, Takao G, Kamijo K, Tsuno T, Ishiguro K, Murafuji T. Alkylation of Nonacidic C(sp3)–H Bonds by Photoinduced Catalytic Michael-Type Radical Addition. Org Lett 2016; 18:4912-4915. [DOI: 10.1021/acs.orglett.6b02391] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shin Kamijo
- Graduate School of Sciences and Technology for Innovation and ‡Department of
Biology and Chemistry, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Go Takao
- Graduate School of Sciences and Technology for Innovation and ‡Department of
Biology and Chemistry, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Kaori Kamijo
- Graduate School of Sciences and Technology for Innovation and ‡Department of
Biology and Chemistry, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Teruo Tsuno
- Graduate School of Sciences and Technology for Innovation and ‡Department of
Biology and Chemistry, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Katsuya Ishiguro
- Graduate School of Sciences and Technology for Innovation and ‡Department of
Biology and Chemistry, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Toshihiro Murafuji
- Graduate School of Sciences and Technology for Innovation and ‡Department of
Biology and Chemistry, Yamaguchi University, Yamaguchi 753-8512, Japan
| |
Collapse
|
15
|
Koide T, Takesue M, Murafuji T, Satomi K, Suzuki Y, Kawamata J, Terai K, Suzuki M, Yamada H, Shiota Y, Yoshizawa K, Tani F. An Azulene‐Fused Tetracene Diimide with a Small HOMO–LUMO Gap. Chempluschem 2016; 82:1010-1014. [DOI: 10.1002/cplu.201600356] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Taro Koide
- Institute for Materials Chemistry and Engineering Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Moritaka Takesue
- Institute for Materials Chemistry and Engineering Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Toshihiro Murafuji
- Graduate School of Medicine Yamaguchi University Yamaguchi 753-8512 Japan
| | - Koichiro Satomi
- Graduate School of Medicine Yamaguchi University Yamaguchi 753-8512 Japan
| | - Yasutaka Suzuki
- Graduate School of Medicine Yamaguchi University Yamaguchi 753-8512 Japan
| | - Jun Kawamata
- Graduate School of Medicine Yamaguchi University Yamaguchi 753-8512 Japan
| | - Kengo Terai
- Graduate School of Materials Science Nara Institute of Science and Technology (NAIST) 8916-5 Takayama-cho, Ikoma Nara 630-0192 Japan
| | - Mitsuharu Suzuki
- Graduate School of Materials Science Nara Institute of Science and Technology (NAIST) 8916-5 Takayama-cho, Ikoma Nara 630-0192 Japan
| | - Hiroko Yamada
- Graduate School of Materials Science Nara Institute of Science and Technology (NAIST) 8916-5 Takayama-cho, Ikoma Nara 630-0192 Japan
| | - Yoshihito Shiota
- Institute for Materials Chemistry and Engineering Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Fumito Tani
- Institute for Materials Chemistry and Engineering Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| |
Collapse
|
16
|
Kamijo S, Takao G, Kamijo K, Hirota M, Tao K, Murafuji T. Photo-induced Substitutive Introduction of the Aldoxime Functional Group to Carbon Chains: A Formal Formylation of Non-Acidic C(sp3
)−H Bonds. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201603810] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Shin Kamijo
- Graduate School of Science and Engineering and Graduate School of Sciences and Technology for Innovation; Yamaguchi University; Yamaguchi 753-8512 Japan
| | - Go Takao
- Graduate School of Science and Engineering and Graduate School of Sciences and Technology for Innovation; Yamaguchi University; Yamaguchi 753-8512 Japan
| | - Kaori Kamijo
- Graduate School of Science and Engineering and Graduate School of Sciences and Technology for Innovation; Yamaguchi University; Yamaguchi 753-8512 Japan
| | - Masaki Hirota
- Graduate School of Science and Engineering and Graduate School of Sciences and Technology for Innovation; Yamaguchi University; Yamaguchi 753-8512 Japan
| | - Keisuke Tao
- Graduate School of Science and Engineering and Graduate School of Sciences and Technology for Innovation; Yamaguchi University; Yamaguchi 753-8512 Japan
| | - Toshihiro Murafuji
- Graduate School of Medicine; Yamaguchi University; Yamaguchi 753-8512 Japan
| |
Collapse
|
17
|
Kamijo S, Takao G, Kamijo K, Hirota M, Tao K, Murafuji T. Photo-induced Substitutive Introduction of the Aldoxime Functional Group to Carbon Chains: A Formal Formylation of Non-Acidic C(sp3
)−H Bonds. Angew Chem Int Ed Engl 2016; 55:9695-9. [DOI: 10.1002/anie.201603810] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 06/06/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Shin Kamijo
- Graduate School of Science and Engineering and Graduate School of Sciences and Technology for Innovation; Yamaguchi University; Yamaguchi 753-8512 Japan
| | - Go Takao
- Graduate School of Science and Engineering and Graduate School of Sciences and Technology for Innovation; Yamaguchi University; Yamaguchi 753-8512 Japan
| | - Kaori Kamijo
- Graduate School of Science and Engineering and Graduate School of Sciences and Technology for Innovation; Yamaguchi University; Yamaguchi 753-8512 Japan
| | - Masaki Hirota
- Graduate School of Science and Engineering and Graduate School of Sciences and Technology for Innovation; Yamaguchi University; Yamaguchi 753-8512 Japan
| | - Keisuke Tao
- Graduate School of Science and Engineering and Graduate School of Sciences and Technology for Innovation; Yamaguchi University; Yamaguchi 753-8512 Japan
| | - Toshihiro Murafuji
- Graduate School of Medicine; Yamaguchi University; Yamaguchi 753-8512 Japan
| |
Collapse
|
18
|
Affiliation(s)
- Shin Kamijo
- Graduate School of Science and Engineering, Yamaguchi University
| | - Mizuki Watanabe
- Graduate School of Science and Engineering, Yamaguchi University
| | - Kaori Kamijo
- Graduate School of Science and Engineering, Yamaguchi University
| | - Keisuke Tao
- Graduate School of Science and Engineering, Yamaguchi University
| | | |
Collapse
|
19
|
Affiliation(s)
- Shin Kamijo
- Graduate School of Science and Engineering, ‡Department of Biology and Chemistry, and §Graduate School
of Medicine, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Keisuke Tao
- Graduate School of Science and Engineering, ‡Department of Biology and Chemistry, and §Graduate School
of Medicine, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Go Takao
- Graduate School of Science and Engineering, ‡Department of Biology and Chemistry, and §Graduate School
of Medicine, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Hiroshi Tonoda
- Graduate School of Science and Engineering, ‡Department of Biology and Chemistry, and §Graduate School
of Medicine, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Toshihiro Murafuji
- Graduate School of Science and Engineering, ‡Department of Biology and Chemistry, and §Graduate School
of Medicine, Yamaguchi University, Yamaguchi 753-8512, Japan
| |
Collapse
|
20
|
Kamijo S, Tao K, Takao G, Murooka H, Murafuji T. Ether derivatization via two-step protocol comprised of photochemical ethereal C–H bond chlorination and nucleophilic substitution. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.02.102] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
21
|
Ninomiya K, Harada Y, Kanetou T, Suenaga Y, Murafuji T, Tsunashima R. Synthesis and acid–base properties of a proton-bridged biaryl compound based on pyridylazulene. NEW J CHEM 2015. [DOI: 10.1039/c5nj01651g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the synthesis and acid–base properties of 1,1′-bi(2-pyridylazulene) and the crystal structure of its mono-protonated form in which pyridyl moieties are interacted by an intramolecular hydrogen bond.
Collapse
Affiliation(s)
- Kazuki Ninomiya
- Graduate School of Medicine
- Yamaguchi University
- Yamaguchi 753-8512
- Japan
| | - Yumi Harada
- Department of Biology and Chemistry
- Yamaguchi University
- Yamaguchi
- Japan
| | - Tomoaki Kanetou
- Graduate School of Science and Engineering
- Yamaguchi University
- Yamaguchi 753-8512
- Japan
| | - Yuma Suenaga
- Graduate School of Medicine
- Yamaguchi University
- Yamaguchi 753-8512
- Japan
| | | | - Ryo Tsunashima
- Graduate School of Science and Engineering
- Yamaguchi University
- Yamaguchi 753-8512
- Japan
| |
Collapse
|
22
|
|
23
|
Nakae T, Kikuchi T, Mori S, Okujima T, Murafuji T, Uno H. Bisarylation of 1,1′,3,3′-Tetrahalo-2,2′-biazulene under Suzuki–Miyaura Cross-coupling Conditions. CHEM LETT 2014. [DOI: 10.1246/cl.131142] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Takahiro Nakae
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University
| | - Takashi Kikuchi
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University
| | - Shigeki Mori
- Integrated Center for Sciences, Ehime University
| | - Tetsuo Okujima
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University
| | | | - Hidemitsu Uno
- Department of Chemistry and Biology, Graduate School of Science and Engineering, Ehime University
| |
Collapse
|
24
|
Murafuji T, Kitagawa K, Yoshimatsu D, Kondo K, Ishiguro K, Tsunashima R, Miyakawa I, Mikata Y. Heterocyclic bismuth carboxylates based on a diphenyl sulfone scaffold: Synthesis and antifungal activity against Saccharomyces cerevisiae. Eur J Med Chem 2013; 63:531-5. [DOI: 10.1016/j.ejmech.2013.02.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Revised: 02/22/2013] [Accepted: 02/25/2013] [Indexed: 10/27/2022]
|
25
|
|
26
|
Abe N, Fujii H, Nakatani M, Murafuji T, Gunji T, Ikeda R, Konakahara T. Synthesis of Benzotropone-Annulated 1-Azaazulenes and Related Compounds by Suzuki-Miyaura Coupling / Aldol Condensation Cascade Reaction and Evaluations of Their Cytotoxic Activity against HeLa S3 Cells. HETEROCYCLES 2012. [DOI: 10.3987/com-11-s(p)7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
27
|
Abe N, Yoshioka E, Koizumi K, Nakashima K, Fujii H, Murafuji T, Gunji T. Synthesis and Complexation of Bis(1-azaazulen-2-yl)amines and Bis(1-azaazulen-2-yl) Sulfides. HETEROCYCLES 2012. [DOI: 10.3987/com-12-12507] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
28
|
Kamimura A, Ishikawa S, Noguchi F, Moriyama T, So M, Murafuji T, Uno H. Unexpected formation of stannolanes and trigonal bipyramidal tin complexes by radical cyclization reaction. Chem Commun (Camb) 2012; 48:6592-4. [DOI: 10.1039/c2cc31753b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
29
|
Matano Y, Kon Y, Saito A, Kimura Y, Murafuji T, Imahori H. Divergent Synthesis of 2,5-Diarylphospholes Based on Cross-coupling Reactions: Substituent Effects on the Optical and Redox Properties of Benzene–Phosphole–Benzene π-Systems. CHEM LETT 2011. [DOI: 10.1246/cl.2011.919] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
30
|
Chen J, Murafuji T, Tsunashima R. Insertion of Benzyne into a Bi–S Bond: A New Synthetic Route to ortho-Functionalized Bismuthanes and Its Application to the Synthesis of Dibenzothiophene. Organometallics 2011. [DOI: 10.1021/om200228x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Jing Chen
- Graduate School of Medicine, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Toshihiro Murafuji
- Graduate School of Medicine, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Ryo Tsunashima
- Graduate School of Science and Engineering, Yamaguchi University, Yamaguchi 753-8512, Japan
| |
Collapse
|
31
|
Abe N, Yoshioka E, Fujii H, Murafuji T, Ikeda R, Konakahara T, Gunji T. Synthesis of 12,12a-Dihydro-7,12a-diazacyclohepta[cd]benz[g]azulen-12-one (Cyclohepta[mn]pyrrolo[1,2-c][1,4]benzodiazepin-12-one) and Evaluation of Cytotoxic Activity against HeLa S3 Cells. HETEROCYCLES 2011. [DOI: 10.3987/com-11-12207] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
32
|
Murafuji T, Fujiwara Y, Yoshimatsu D, Miyakawa I, Migita K, Mikata Y. Bismuth heterocycles based on a diphenyl sulfone scaffold: synthesis and substituent effect on the antifungal activity against Saccharomyces cerevisiae. Eur J Med Chem 2010; 46:519-25. [PMID: 21177000 DOI: 10.1016/j.ejmech.2010.11.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Revised: 11/12/2010] [Accepted: 11/21/2010] [Indexed: 10/18/2022]
Abstract
A series of heterocyclic organobismuth(III) compounds 2 [ClBi(5-R-C6H(3)-2-SO2C6H(4)-1'-): R=Me, Ph, MeO, Cl, H, t-Bu, CF3, F, Me2N] was synthesized in order to study the relative importance of structure and specific substitutions in relation to their lipophilicity and antifungal activity against the yeast Saccharomyces cerevisiae. A clear structure-activity relationship between the size of the inhibition zone and the value of ClogP was found for 2. These results suggest that the higher the lipophilicity, the lower the antifungal activity. Thus, 2e (R=H) and 2h (R=F), which had ClogP values of 1.18 and 1.45, respectively, were most active. In contrast, 2b (R=Ph) and 2f (R=t-Bu) had ClogP values of 3.06 and 3.00, respectively, and exhibited no antifungal activity. Compound 6b ClBi[5-(OH)C6H(3)-2-SO(2)-5'-(OH)C6H(3)-1'-] had an estimated ClogP value of 0.81 but exhibited only low activity in spite of its low ClogP value, suggesting that such a considerable decrease in lipophilicity lowers inhibition activity. Bismuth carboxylate 7b derived from p-nitrobenzoic acid and 2e exhibited inhibition activity comparable to those of 2e and 2h despite its higher lipophilicity (ClogP=2.68).
Collapse
Affiliation(s)
- Toshihiro Murafuji
- Graduate School of Medicine, Department of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi 753-8512, Japan.
| | | | | | | | | | | |
Collapse
|
33
|
Ohshita J, Matsui S, Yamamoto R, Mizumo T, Ooyama Y, Harima Y, Murafuji T, Tao K, Kuramochi Y, Kaikoh T, Higashimura H. Synthesis of Dithienobismoles as Novel Phosphorescence Materials. Organometallics 2010. [DOI: 10.1021/om100560n] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Joji Ohshita
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
| | - Shigenori Matsui
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
| | - Roh Yamamoto
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
| | - Tomonobu Mizumo
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
| | - Yousuke Ooyama
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
| | - Yutaka Harima
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
| | - Toshihiro Murafuji
- Department of Chemistry, Graduate School of Medicine, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Keisuke Tao
- Department of Chemistry, Graduate School of Medicine, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Yusuke Kuramochi
- Tsukuba Laboratories, Sumitomo Chemical Co. Ltd., Tsukuba 300-3294, Japan
| | - Takashi Kaikoh
- Tsukuba Laboratories, Sumitomo Chemical Co. Ltd., Tsukuba 300-3294, Japan
| | | |
Collapse
|
34
|
Abe N, Fujii H, Nagamatsu K, Gunji T, Murafuji T. The Reaction of [(1-Azaazulen-2-yl)imino]phosphorane with Arylaldehydes: Formation of Bis[(1-azaazulen-2-yl)amino]arylmethanes. HETEROCYCLES 2010. [DOI: 10.3987/com-10-12050] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
35
|
|
36
|
Murafuji T, Sugihara Y, Fujinaga M, Suetake K, Gyoji K, Kurotobi K. An Easy Access to 2-Substituted Azulenes from Azulene-2-boronic Acid Pinacol Ester. SYNTHESIS-STUTTGART 2008. [DOI: 10.1055/s-0028-1083224] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
37
|
Shibasaki T, Ooishi T, Yamanouchi N, Murafuji T, Kurotobi K, Sugihara Y. A New Efficient Route to 2-Substituted Azulenes Based on Sulfonyl Group Directed Lithiation. J Org Chem 2008; 73:7971-7. [DOI: 10.1021/jo801166f] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Toshihisa Shibasaki
- Graduate School of Medicine, Yamaguchi University, Yamaguchi City 753-8512, Japan, and Department of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi City 753-8512, Japan
| | - Takeo Ooishi
- Graduate School of Medicine, Yamaguchi University, Yamaguchi City 753-8512, Japan, and Department of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi City 753-8512, Japan
| | - Nobuhiko Yamanouchi
- Graduate School of Medicine, Yamaguchi University, Yamaguchi City 753-8512, Japan, and Department of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi City 753-8512, Japan
| | - Toshihiro Murafuji
- Graduate School of Medicine, Yamaguchi University, Yamaguchi City 753-8512, Japan, and Department of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi City 753-8512, Japan
| | - Kei Kurotobi
- Graduate School of Medicine, Yamaguchi University, Yamaguchi City 753-8512, Japan, and Department of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi City 753-8512, Japan
| | - Yoshikazu Sugihara
- Graduate School of Medicine, Yamaguchi University, Yamaguchi City 753-8512, Japan, and Department of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi City 753-8512, Japan
| |
Collapse
|
38
|
Hirakawa S, Kawamata J, Suzuki Y, Tani S, Murafuji T, Kasatani K, Antonov L, Kamada K, Ohta K. Two-Photon Absorption Properties of Azulenyl Compounds Having a Conjugated Ketone Backbone. J Phys Chem A 2008; 112:5198-207. [DOI: 10.1021/jp800415b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shoichiro Hirakawa
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yoshida, Yamaguchi 753-8512, Japan, Department of Advanced Materials Science and Engineering, Faculty of Engineering, Yamaguchi University, Tokiwadai, Ube 755-8611, Japan, and Photonics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka 563-8577, Japan
| | - Jun Kawamata
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yoshida, Yamaguchi 753-8512, Japan, Department of Advanced Materials Science and Engineering, Faculty of Engineering, Yamaguchi University, Tokiwadai, Ube 755-8611, Japan, and Photonics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka 563-8577, Japan
| | - Yasutaka Suzuki
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yoshida, Yamaguchi 753-8512, Japan, Department of Advanced Materials Science and Engineering, Faculty of Engineering, Yamaguchi University, Tokiwadai, Ube 755-8611, Japan, and Photonics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka 563-8577, Japan
| | - Seiji Tani
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yoshida, Yamaguchi 753-8512, Japan, Department of Advanced Materials Science and Engineering, Faculty of Engineering, Yamaguchi University, Tokiwadai, Ube 755-8611, Japan, and Photonics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka 563-8577, Japan
| | - Toshihiro Murafuji
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yoshida, Yamaguchi 753-8512, Japan, Department of Advanced Materials Science and Engineering, Faculty of Engineering, Yamaguchi University, Tokiwadai, Ube 755-8611, Japan, and Photonics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka 563-8577, Japan
| | - Kazuo Kasatani
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yoshida, Yamaguchi 753-8512, Japan, Department of Advanced Materials Science and Engineering, Faculty of Engineering, Yamaguchi University, Tokiwadai, Ube 755-8611, Japan, and Photonics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka 563-8577, Japan
| | - Liudmil Antonov
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yoshida, Yamaguchi 753-8512, Japan, Department of Advanced Materials Science and Engineering, Faculty of Engineering, Yamaguchi University, Tokiwadai, Ube 755-8611, Japan, and Photonics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka 563-8577, Japan
| | - Kenji Kamada
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yoshida, Yamaguchi 753-8512, Japan, Department of Advanced Materials Science and Engineering, Faculty of Engineering, Yamaguchi University, Tokiwadai, Ube 755-8611, Japan, and Photonics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka 563-8577, Japan
| | - Koji Ohta
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yoshida, Yamaguchi 753-8512, Japan, Department of Advanced Materials Science and Engineering, Faculty of Engineering, Yamaguchi University, Tokiwadai, Ube 755-8611, Japan, and Photonics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka 563-8577, Japan
| |
Collapse
|
39
|
Mustafizur Rahman AFM, Murafuji T, Shibasaki T, Suetake K, Kurotobi K, Sugihara Y, Azuma N, Mikata Y. Characterization of Azulenylphosphine Derivatives. Unexpected Debromination and Its Synthetic Utility in the Preparation of 2-Substituted Azulene. Organometallics 2007. [DOI: 10.1021/om0607090] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Toshihiro Murafuji
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Toshihisa Shibasaki
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Kouichi Suetake
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Kei Kurotobi
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Yoshikazu Sugihara
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Nagao Azuma
- Department of Chemistry, Faculty of Science, Ehime University, Matsuyama 790-8577, Japan
| | - Yuji Mikata
- Department of Chemistry, Faculty of Science, Nara Women's University, Nara 630-8506, Japan
| |
Collapse
|
40
|
Murafuji T, Azuma T, Miyoshi Y, Ishibashi M, Rahman AFMM, Migita K, Sugihara Y, Mikata Y. Inhibition of jack bean urease by organobismuth compounds. Bioorg Med Chem Lett 2006; 16:1510-3. [PMID: 16406781 DOI: 10.1016/j.bmcl.2005.12.034] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2005] [Revised: 11/30/2005] [Accepted: 12/12/2005] [Indexed: 11/25/2022]
Abstract
Inhibitory activity of organobismuth compounds, triarylbismuthanes 1 and their dihalides 2 and 3, was examined against jack bean urease. Besides triarylbismuth dichlorides 2, triarylbismuth difluorides 3 and bismuthanes 1 exhibited the activity. Of all these compounds, triphenylbismuth difluoride 3a and tris(4-fluorophenyl)bismuth dichloride 2b showed the highest activity. These results indicate that generation of the inhibitory effect is not always governed by the Lewis acidity at the bismuth center. Such a tendency of inhibition by the organobismuth compounds is in good accord with that observed in the antibacterial activity against Helicobacter pylori, suggesting that H. pylori-produced urease may be a therapeutic target by bismuth-based drugs.
Collapse
Affiliation(s)
- Toshihiro Murafuji
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi 753-8512, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
41
|
Mustafizur Rahman AFM, Murafuji T, Kurotobi K, Sugihara Y, Azuma N. First Introduction of an Azulenyl Group into the Bismuth and Antimony Center. Synthesis and Structure of Azulenylbismuthanes and Their Difluorides. Organometallics 2004. [DOI: 10.1021/om040053f] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Toshihiro Murafuji
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Kei Kurotobi
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Yoshikazu Sugihara
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Nagao Azuma
- Department of Chemistry, Faculty of Science, Ehime University, Matsuyama 790-8577, Japan
| |
Collapse
|
42
|
Rahman AM, Murafuji T, Ishibashi M, Miyoshi Y, Sugihara Y. Effect of π-accepting substituent on the reactivity and spectroscopic characteristics of triarylbismuthanes and triarylbismuth dihalides. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.07.055] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
43
|
Ito S, Terazono T, Kubo T, Okujima T, Morita N, Murafuji T, Sugihara Y, Fujimori K, Kawakami J, Tajiri A. Efficient preparation of 2-azulenylboronate and Miyaura-Suzuki cross-coupling reaction with aryl bromides for easy access to poly(2-azulenyl)benzenes. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.04.057] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
44
|
Murafuji T, Miyoshi Y, Ishibashi M, Mustafizur Rahman AFM, Sugihara Y, Miyakawa I, Uno H. Antifungal activity of organobismuth compounds against the yeast Saccharomyces cerevisiae: structure–activity relationship. J Inorg Biochem 2004; 98:547-52. [PMID: 14987856 DOI: 10.1016/j.jinorgbio.2003.12.024] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2003] [Revised: 12/27/2003] [Accepted: 12/29/2003] [Indexed: 10/26/2022]
Abstract
Antifungal activity of organobismuth(III) and (V) compounds 1-9 was examined against the yeast, Saccharomyces cerevisiae. A clear structure-activity relationship was observed in these compounds. Thus, triarylbismuth dichlorides 2 [(4-YC6H4)3BiCl2: Y=MeO, F, Cl, CF3, CN, NO2] and halobismuthanes 6 [2-(t)BuSO2C6H4(4-YC6H4)BiX: Y=MeO, Me, H, Cl; X=Cl, Br, I], 7 [Bi(X)(C6H4-2-SO2C6H4-1'-): X=Cl, Br, I], 8 [2-Me2NCH2C6H4(Ph)BiX: X=Cl, Br] and 9 [4-MeC6H4(8-Me2NC10H6-1-)BiCl] showed the growth inhibition effect, while triarylbismuth difluorides 3 [(4-YC6H4)3BiF2] and triarylbismuthanes 1 [(4-YC6H4)3Bi], 4 [2-(t)BuSO2C6H4(4-YC6H4)2Bi] and 5 [4-YC6H4Bi(C6H4-2-SO2C6H4-1'-)] were not active at all irrespective of the nature of the substituents. Generation of the inhibition effect is governed by the facility of nucleophilic reaction at the bismuth center and the Lewis acidic bismuth center is an active site. Of all the bismuth compounds attempted, halobismuthanes 7 derived from diphenyl sulfone exhibited the highest activities. An X-ray crystallographic study of 7a [Bi(Cl)(C6H4-2-SO2C6H4-1'-)] revealed that the bismuth center adopts a seven-coordinated geometry, which is unusual in organobismuth(III) compounds, through the intramolecular and intermolecular coordination between the bismuth and oxygen atoms. The marked inhibition effect of 7 may be attributed to such a highly coordinated geometry, which allows the bismuth center to bind tightly with some biomolecules playing important roles in the growth of S. cerevisiae.
Collapse
Affiliation(s)
- Toshihiro Murafuji
- Department of Chemistry, Faculty of Science, Yamaguchi University, Yamaguchi 753-8512, Japan.
| | | | | | | | | | | | | |
Collapse
|
45
|
Kurotobi K, Miyauchi M, Takakura K, Murafuji T, Sugihara Y. Direct Introduction of a Boryl Substituent into the 2-Position of Azulene: Application of the Miyaura and Smith Methods to Azulene. European J Org Chem 2003. [DOI: 10.1002/ejoc.200300001] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
46
|
Murafuji T, Sugihara Y, Kurotobi K, Tabata H, Miyauchi M, Mustafizur RA, Migita K, Shimoyama H, Fujimori K. The First Generation of Azulenyl-Lithium and -Magnesium: A Novel, Versatile Method of Introducing a Substituent at the 2-Position of an Azulene Skeleton. SYNTHESIS-STUTTGART 2003. [DOI: 10.1055/s-2003-36245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
47
|
Murafuji T, Kurotobi K, Nakamura N, Sugihara Y. Recent Advances in the Synthesis of Optically Active Compounds Bearing a Chiral Heteroatom Center in the Group 13-16 Elements. CURR ORG CHEM 2002. [DOI: 10.2174/1385272023373365] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
48
|
Murafuji T, Azuma N, Suzuki H. First X-ray Structure Analysis of cis/trans Paired Diastereoisomeric Chlorobismuthanes Bearing a Chiral Bismuth Center Induced by the (R)-1-(Dimethylamino)ethyl Group as a Chiral Source. Unexpected Axial Disposition of the Benzylic Methyl Group Causing the Equilibrium Isomer Ratio in Solution To Be Insensitive to Steric Congestion around the Bismuth Atom. Organometallics 2002. [DOI: 10.1021/om00003a071] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
49
|
Murafuji T, Mutoh T, Satoh K, Tsunenari K, Azuma N, Suzuki H. Hypervalent Bond Formation in Halogeno(2-acylphenyl)bismuthanes. Organometallics 2002. [DOI: 10.1021/om00008a036] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
50
|
Kurotobi K, Tabata H, Miyauchi M, Murafuji T, Sugihara Y. Coupling Reaction of Azulenyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolanes with Haloazulenes. SYNTHESIS-STUTTGART 2002. [DOI: 10.1055/s-2002-31947] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|