Journal of Photoscience

Korean Society of Photoscience (한국광과학회)
권호 표지

The Modification of Exocyclic Ketone on Methyl(Pyro) pheophorbide-a and Influence with Visible Spectra

  • Wang, Jin-Jun (Bio-Organic Science Division,Korea Research Instituteof Chemical Technology) ;
  • Han, Guang-Fan (Bio-Organic Science Division,Korea Research Instituteof Chemical Technology) ;
  • Shim, Young-Key (Bio-Organic Science Division,Korea Research Instituteof Chemical Technology)
  • Published : 2001.03.01
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Abstract

The methyl pheophorbide-a (MP-a) and methyl pyropheophorbide-a (MPP-a) were modified by reaction of exocyclic ketone in E-ring with nucleophilic reagent and several chlorin derivatives were synthesized. The change of the structure in E-ring served an expanding conjugation region and introduction of electron-withdrawing group, which strongly influenced the visible spectra. The Qy bands of synthesized compounds were affected by the substituents on the Qy axis(N$\sub$21/-N$\sub$23/).

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