Design and studies of novel polyoxysterol-based porphyrin conjugates.

  title={Design and studies of novel polyoxysterol-based porphyrin conjugates.},
  author={Halina A Zhylitskaya and Vladimir N Zhabinskii and Raisa P Litvinovskaya and Raffaella Lettieri and Donato Monti and Mariano Venanzi and Vladimir A Khripach and Pavel Dra{\vs}ar},
  volume={77 11},
New types of steroid-porphyrin conjugates derived from 20-hydroxyecdysone (20E) and 24-epibrassinolide (EBl) were synthesized. An exceptional regioselectivity in the reaction of both steroids with porphyrin boronic acids was found to give side-chain-conjugated boronic esters as sole products. UV-Vis-, fluorescence and NMR spectroscopy yielded similar data for all the studied compounds confirming the solvent driven supramolecular assembly with formation of J-aggregates. CD measurements of water… CONTINUE READING
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