Structural Characterization of Picket-fence Porphyrinatoiron with ω-Hydroxy-2, 2-dimethylicosanoyl Side-chains vs. ω-Cholinephosphoryl-2, 2-dimethylicosanoyl Side-chains by FAB High-energy-CID MS/MS
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概要
- 論文の詳細を見る
Applicability of FAB high-energy-CID MS/MS to structural characterization of two types of tetraphenylporphyrin (TPP)-derivatives was examined. These tetraphenylporphyrin (TPP)-derivatives, 20-hydroxy-2,2-dimethylicosanoyl picket-fence porphyrinatoiron and 20-cholinephosphoryl-2,2-dimethylicosanoyl picket-fence porphyrinatoiron have four 2,2-dimethylicosanamido long-chains in common in their structures, which keep a balance between hydrophobic and hydrophilic properties. The structural difference between the two compounds is that the former has a hydroxyl group at the remote end of the 2,2-dimethylicosanamido long-chain, while the latter has a phosphocholine ester functional group at the remote-end. This structural difference gives rise to different features as well as some analogies in their FAB and the high-energy-CID MS/MS spectra. Differences and analogies in those spectra were also noted between the long-chain porphyrin derivatives we are describing here and the pivaloyl-type porphyrins we reported previously [T. Shibue, H. Kambe, H. Nishide, S. Akashi, N. Dohmae, and Y. Ohashi, Eur. Mass Spectrom., 3, 291-299 (1997)]. By selecting a precursor ion at m/z 476, which corresponds to the 20-cholinephosphoryl-2,2-dimethylicosanoyl group, charge-remote fragmentation was observed. This observation reminded us our previous study on the imidazole-tailed picket-fence porphyrin fragmentations.
- 日本質量分析学会の論文
- 1998-06-01
著者
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TSUCHIDA Eishun
Department of Polymer Chemistry, Advanced Research Institute for Science and Engineering, Waseda Uni
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NISHIDE Hiroyuki
Department of Polymer Chemistry, Advanced Research Institute For Science and Engineering, Waseda Uni
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OHASHI Yoko
Glycobiology Research, Frontier Research Program, The Institute of Physical and Chemical Research (R
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SHIBUE Toshimichi
Materials Characterization Central Laboratory, Waseda Univ.
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西出 宏之
早稲田大学理工学術院
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Nishide Hiroyuki
Department Of Applied Chemistry Waseda University
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西出 宏之
早稲田大学理工学術院 応用化学専攻
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Ohashi Yoko
Glycobiology Research Frontier Research Program The Institute Of Physical And Chemical Research (rik
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Akashi Satoko
The Institute Of Physical And Chemical Research (riken)
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Shibue T
Waseda Univ. Tokyo Jpn
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Shibue Toshimichi
Mccl Waseda Univ.
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Shibue Toshimichi
Materials Characterization Central Laboratory Waseda Univ.
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KAMBE Hisashi
Materials Characterization Central Laboratory, Waseda University
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Kambe Hisahi
Materials Characterization Central Laboratory Waseda University
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Tsuchida Eishun
Department Of Applied Chemistry Waseda University
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