Design, Synthesis, and Self-Assembly of “Artificial Dinucleotide Duplexes”
摘要:
The synthesis of the A-U and G-C functionalized systems 1, 2, 3, and 4 has been accomplished using palladium-mediated cross-coupling reactions. These systems undergo self-association in nonpolar solvents such as CDCl3 as judged from FABMS and NMR spectroscopic analyses.
herein report the self‐assembly of a lipophilic bromoguanosine derivative (G1) in homogeneous solution, in the solidstate and in planar bilayer membranes. The self‐assembly of G1, driven by H‐bonding and π–π stacking interactions can form different nano‐structures depending on incubation time. The G1 nanostructure is able to bind a bioactive dye like Rose Bengal. In crystal state, it shows ribbon type
5-N-tert-Butylaminoxylcytidine was synthesized as a new spin-labelled cytidine to detect guanosine by EPR spectroscopy. Metal-halogen exchange reaction of TBS-protected N-benzoyl-5-iodocytidine followed by a reaction with 2-methyl-2-nitrosopropane afforded 5-N-tert-butylhydroxylaminocytidine with considerable affinity for guanosine and its oxidation gave 5-N-tert-butylaminoxylcytidine. Changes in EPR parameters monitored its selective base pairing with guanosine derivatives and the formation of a 2:2 complex with 8-oxoguanosine. (C) 2015 Elsevier Ltd. All rights reserved.