Template-assisted preferential formation of a syn photodimer in a pyrophosphate-induced self-assembly of a thymine-functionalized isothiouronium receptor.
[reaction: see text] The effect of anion templation is investigated for the photodimerization of a thymine-functionalized isothiouronium receptor. The receptor forms a photodimer at the thymine moiety in methanol upon UV irradiation, while the isothiouronium moiety works as an oxoanion binding site via a two-point hydrogen-bonding motif. As compared to the case of a free receptor, the presence of pyrophosphate (PPi) resulted in the preferential formation of the syn-type photodimer, which would be desirable for recognizing the templated PPi.
Kato
Yuichi
Y
Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan.
Nishizawa
Seiichi
S
Teramae
Norio
N