• Title/Summary/Keyword: Bispsoralen derivatives

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Synthesis and Photophysical Properties of Bispsoralen Derivatives Linked by a Bisamide-polymethylene Chain

  • Yoo, Dong-Jin
    • Bulletin of the Korean Chemical Society
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    • v.28 no.10
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    • pp.1715-1719
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    • 2007
  • New bispsoralen derivatives 5-10, 8-MOP-NHCO(CH2)nCONH-8-MOP (BPSBA-Cn, n = 0, 1, 2, 3, 4 and 5) in which 5 position of an 8-methoxypsoralen (8-MOP) is linked by various lengths of bisamide polymethylene chain to 5 position of the other 8-MOP, have been synthesized by the amidation of 5-amino-8-methoxypsoralen (12) with α,ω-alkanoyl dichloride. Photophysical properties of their derivatives including π?π stacking interaction between the two aromatic moieties were investigated by UV absorption and fluorescence emission spectra. Efficient ring-ring stacking interactions have been observed in BPSBA-C4 (9) from the percent hypochromism (%H) of the models.