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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 5, Number 6
BKCSDE 5(6)
June 20, 1984 

 
Title
Isolation and Physical Properties of Photochemical 8-Methoxypsoralen-thymidine 4',5'-C4-Monoadducts
Author
Sang Chul Shim, Ho Kwon Kang
Keywords
Abstract
The 8-methoxypsoralen thymidine monoadducts are isolated from the irradiation mixture of 8-methoxypsoralen and thymidine in a dry film state by a flash column followed by lobar column chromatography. Some physical properties of the adducts were determined. The fluorescence maximum and quantum yield of the monoadduct are dependent on the solvent polarity and the phosphorescence to fluorescence quantum yield ratio was 2.10 which was significantly increased by external heavy atoms. The phosphorescence lifetime was 1.2s which is relatively large compared to other coumarin derivatives. Accurate spectral data of the monoadducts are presented.
Page
219 - 223
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