Effect of C132-Stereochemistry on the Molecular Properties of Chlorophylls.
-
- Furukawa Hiroyasu
- Institute of Industrial Science, The University of Tokyo
-
- Oba Toru
- Department of Bioscience and Biotechnology, Faculty of Science and Engineering, Ritsumeikan University
-
- Tamiaki Hitoshi
- Department of Bioscience and Biotechnology, Faculty of Science and Engineering, Ritsumeikan University
-
- Watanabe Tadashi
- Institute of Industrial Science, The University of Tokyo
この論文をさがす
説明
To elucidate the origin of differences in the monomeric properties of chlorophyll a and a′ (Chl a/a′; C132-(R/S)-epimers of Chl a), a series of Zn-Chl derivatives possessing a variety of C134 substituents were prepared. The (S)-epimers gave absorption and emission bands at slightly longer wavelengths than the corresponding (R)-epimers. The (S)-epimers had more intense CD peaks than the (R)-epimers. In comparison with Zn-Chl a/a′ (C134-Me), Zn-Chl with a bulky 2,4-dimethyl-3-pentyl moiety at the C134-position showed a greater difference between the 13C NMR chemical shifts of the epimers. These spectral differences between the (R)- and (S)-epimers were attributed to ruffling of the chlorin macrocycle, arising from a steric repulsion between the C132 and C17 moieties. The trend of the rate constant of epimerization, isomerization at the C132 position, in the C134-substituted Zn-Chls is in line with the above interpretation. The relationship between the spectroscopic and kinetic results and the distortion of the macrocycle is schematically represented.
収録刊行物
-
- Bulletin of the Chemical Society of Japan
-
Bulletin of the Chemical Society of Japan 73 (6), 1341-1351, 2000
公益社団法人 日本化学会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390282679098569472
-
- NII論文ID
- 130004150661
- 10009148628
-
- NII書誌ID
- AA00580132
-
- ISSN
- 13480634
- 00092673
-
- NDL書誌ID
- 5405591
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDLサーチ
- Crossref
- CiNii Articles
- OpenAIRE
-
- 抄録ライセンスフラグ
- 使用不可
