| 1 | Author | Verena Scheumann, Michael Helfrich, Siegrid Schoch, Wolfhart Rüdiger | Requires 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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