P hotodon of (N-acety~ ycyl) oligopeptide-linked anthraquinone molecules was investigated. In an acetonitrile solution, the photoexcited anthraquinone moiety abstracted intramolecularly the hydrogen atom of the methylene site of glycine residue. The biradial formed was followed by the formation of GO bonding via radical recombination to produce ring-clrmure products in high yielda (23-582). A variety of oligopeptide spacers between ...
