ChemInform Abstract: SYNTHESES OF BILE PIGMENTS. X. SYNTHESIS AND PHOTOISOMERIZATION OF RACEMIC PHYTOCHROMOBILIN DIMETHYL ESTER

Abstract

Die Synthese der Titelverbindung (VI) gelang durch Kondensation der aus dem Pyrromethencarbonsäureester (Ia) über die Stufen (Ib)‐(III) erhältlichen Aldehyds (IV) mit dem bereits früher dargestellten Dihydropyrromethenon (V).

Chlorophyll Metabolism, an Overview

“…The primary product of the reduction is 3Z-PΦB, which must be isomerized to 3E-PΦB before incorporation into phytochrome. No specifi c isomerase has been detected and it may not exist since non-enzymatic 3Z/3E-isomerization of phytobilins occurs easily as a photochemical reaction (Weller and Gossauer, 1980) or as a chemical reaction catalyzed by glutathione (Beale and Cornejo, 1991a) and, is possibly also catalyzed by the apophytochrome protein (Frankenberg and Lagarias, 2003).…”