Chemistry of Bacteriochlorophyll b: Identification of Some (Photo)Oxidation Products
نویسنده
چکیده
Photoreactions o f bacteriochlorophyll b have been studied. They all arise from reactions at the A8,8' double-bond. The A7,8-isomerisation product 3 is formed under anaerobic conditions. Irradiation in the presence of oxygen leads to three products arising from an autoxidation reaction involving singlet oxygen. The structures o f two o f them (4, 5) have been established from their methylpheophorbides 10 and 11 containing an 8-acetyl and 8-(meth)oxyethyl-substituent, respectively, in addition to the isomerized A7,8-double bond.
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