Photoaddition of 4,6-Dimethyltetrahydrobenzoangelicin to Thymine in DNA: X-ray Studies and Experiments with Model Oligonucleotides¶
作者:Sergio Caffieri、Giorgia Miolo、Francesco Dall'Acqua、Franco Benetollo、Gabriella Bombieri
DOI:10.1562/0031-8655(2000)072<0023:podtti>2.0.co;2
日期:——
The crystal structures of 4,6-dimethyltetrahydrobenzoangelicen (THBA), a furocoumarin analog, and of its furan-side cis-syn cycloadduct with thymine formed in the photoreaction with DNA, have been determined. The crystal structure of the latter compound contained only one enantiomeric form corresponding to the addition to a 5'-XpT site. Contrary to most psoralen derivatives studied, THBA showed higher photoreactivity toward synthetic oligonucleotides containing that sequence than toward those with the 5'-TpX sequence.