Photooxidative cleavage of zinc 20-substituted chlorophyll derivatives: conformationally P-helix-favored formation of regioselectively 19–20 opened linear tetrapyrroles
書誌事項
- 公開日
- 2012-06
- 資源種別
- journal article
- 権利情報
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- https://www.springer.com/tdm
- https://www.springer.com/tdm
- DOI
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- 10.1039/c1pp05301a
- 公開者
- Springer Science and Business Media LLC
この論文をさがす
説明
Photoreaction of zinc methyl 20-substituted meso(pyro)pheophorbide-a prepared by modifying naturally occurring chlorophyll-a in the presence of oxygen molecules gave its C19-C20 oxidative cleavage (1-carbonyl-19-oxo-bilatrienes) as the major products and the regioisomeric C1-C20 cleavage (19-carbonyl-1-oxo-bilatrienes) as the minor products. The resulting zinc complexes of linear tetrapyrroles took a helical conformation and the P-conformers were preferential over the M-stereoisomers due to the presence of their 17S,18S-chiral centers. The helical conformers (diastereomers) of the corresponding nickel complexes were separated by reverse-phase or chiral HPLC and their conformational changes were observed in solution.
収録刊行物
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- Photochemical & Photobiological Sciences
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Photochemical & Photobiological Sciences 11 (6), 898-907, 2012-06
Springer Science and Business Media LLC
