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Nakagawa A, Aoyagi S, Omachi H, Ishino K, Nishino M, Rio J, Ewels C, Shinohara H. Isolation and structure determination of missing fullerenes Gd@C 74(CF 3) n through in situ trifluoromethylation. R Soc Open Sci 2018; 5:181015. [PMID: 30839731 PMCID: PMC6170568 DOI: 10.1098/rsos.181015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 08/29/2018] [Indexed: 05/04/2023]
Abstract
Our trifluoromethyl functionalization method enables the dissolution and isolation of missing metallofullerenes of Gd@C74(CF3) n . After multi-stage high-performance liquid chromatography purification, Gd@C74(CF3)3 and two regioisomers of Gd@C74(CF3) are isolated. X-ray crystallographic analysis reveals that all of the isolated metallofullerenes react with CF3 groups on pentagons of the D 3 h-symmetry C74 cages. Highest occupied molecular orbital-lowest unoccupied molecular orbital gaps of these trifluoromethylated derivatives, estimated by absorption spectra, are in the range 0.71-1.06 eV, consistent with density functional calculations.
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Affiliation(s)
- Ayano Nakagawa
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Nagoya City University, Nagoya 467-8501, Japan
| | - Haruka Omachi
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
- Research Center for Materials Science, Nagoya University, Nagoya 464-8602, Japan
| | - Katsuma Ishino
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
| | - Makiko Nishino
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
| | - Jeremy Rio
- Institut des Materiaux Jean Rouxel (IMN), Université de Nantes, CNRS UMR6502, 2 Rue de la Houssiniere, BP32229, Nantes 44322, France
| | - Chris Ewels
- Institut des Materiaux Jean Rouxel (IMN), Université de Nantes, CNRS UMR6502, 2 Rue de la Houssiniere, BP32229, Nantes 44322, France
| | - Hisanori Shinohara
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
- Institute for Advanced Research, Nagoya University, Nagoya 464-8602, Japan
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Peng X, Liu J, Wang C, Han Z, Shu Y, Li X, Zhou L, Qiu M. Unusual prenylated phenols with antioxidant activities from Ganoderma cochlear. Food Chem 2014; 171:251-7. [PMID: 25308666 DOI: 10.1016/j.foodchem.2014.08.127] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2014] [Revised: 08/25/2014] [Accepted: 08/28/2014] [Indexed: 12/31/2022]
Abstract
Seven new prenylated phenols, five novel phenols (1-5) with polycyclic skeleton and two new phenols (6 and 7) with a carbon chain, along with one known compound (8) were isolated from the fruiting bodies of Ganoderma cochlear. The structures of new compounds were elucidated by the spectroscopic technologies, X-ray crystallography analysis and chiral HPLC chromatography. All compounds showed antioxidant effect in radical scavenging assays and a plausible biosynthetic pathway for 1-8 was proposed.
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Affiliation(s)
- XingRong Peng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; Graduate University of the Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - JieQing Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - CuiFang Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - ZhongHui Han
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Yi Shu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - XuYang Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; Graduate University of the Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Lin Zhou
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - MingHua Qiu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China.
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