期刊
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
卷 2009, 期 1, 页码 21-31出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.200800804
关键词
Natural products; Chlorophyll; Catabolism; Biomimetic synthesis; Structure elucidation; Tetrapyrroles
资金
- Austrian National Science Foundation [P16097, P19596]
- Stipendien-Fonds der Deutschen Chemischen Industrie (Frankfurt, Germany)
Twenty years ago, the molecular basis for the seasonal disappearance of chlorophyll was still enigmatic. In the. meantime, our knowledge on chlorophyll breakdown has grown considerably. As outlined here, it has been possible to decipher the basic transformations involved in natural chlorophyll breakdown by identification of chlorophyll catabolites in higher plants, and with the help of the synthesis of (putative) catabolic intermedidtes. In vascular plants, chlorophyll breakdown typically converts the green plant. pigments efficiently into colorless and non-fluorescent tetrapyrroles. It involves colored intermediates only fleetingly and in an (elusive) enzyme-bound form. The non-fluorescent chlorophyll catabolites accumulate in the vacuoles of degreened leaves and are considered the products, primarily, of a detoxification process. However, they are effective antioxidants, and may thus also have physiologically beneficial chemical properties. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
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