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1996 (1)
1Author    Verena Scheumann, Michael Helfrich, Siegrid Schoch, Wolfhart RüdigerRequires cookie*
 Title    Reduction of the Formyl Group of Zinc Pheophorbide b in vitro and in vivo: a Model for the Chlorophyll b to a Transformation  
 Abstract    The chemical reduction of the formyl group of pheophorbide b with sodium cyanoborohy­ dride in methanol leads to 7 '-methoxy-and 7 1-hydroxy-pheophorbide a. The same reaction with zinc pheophorbide b yields in addition zinc pheophorbide a. This was characterized by mass and 'H -NM R spectroscopy. Infiltration of zinc pheophorbides a and b and of zinc 7 1-hydroxy-pheophorbide a into etiolated oat leaves yielded phytylated products. The best yield in the esterification was obtained with 7 1-hydroxy-pheophorbide a. Analysis of the products revealed the formation of zinc pheophytin a from all infiltrated compounds. The significance for the transformation of chlorophyll b into chlorophyll a is discussed. 
  Reference    Z. Naturforsch. 51c, 185—1 (1996); received Novem ber 17/D ecem ber 18 1995 
  Published    1996 
  Keywords    Avena sativa L, Infiltration into Etiolated Leaves, Chemical Reduction, Cyanoborohydride, Phytylation 
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 TEI-XML for    default:Reihe_C/51/ZNC-1996-51c-0185.pdf 
 Identifier    ZNC-1996-51c-0185 
 Volume    51