Studies on Plant Bile Pigments-6. Photochemically Assisted Reaction of a Model for Phytochrome Interconversion A-dihydrobilindione with Nucleophiles As
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چکیده
From the A-dihydrobilindione 3. the pyridinium derivatives 6a,b and analogues therwf have been obtained by a formal nucleophilic substitution. The reaction is rationalized as a photochemically assisted oxidation of 3 with a subsequent regioselective addition of pyridine at C-5. By thermolysis. 6a.b yields back the parent bilin 3, together with an oxidation product. The significance of the reaction with respect to the phytochrome interconversion is discussed.
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تاریخ انتشار 2007