Formation of a Hydrogen-Bonded Barbiturate [2]-Rotaxane
摘要:
Interlocked structures containing the classic Hamilton barbiturate binding motif comprising two 2,6-diamidopyridine units are reported for the first time. Stable [2]-rotaxanes can be accessed either through hydrogen-bonded preorganization by a barbiturate thread followed by a Cu+-catalyzed "click" stoppering reaction or by a Cu2+-mediated Glaser homocoupling reaction.
hydrogen‐bonded rotaxanes through five‐component clipping reactions. A solid‐state study showed the participation of the pyridine nitrogen atom in the stabilization of the mechanical bond between the thread and the benzylic amide macrocycle. The addition of external complementary binders to a series of interlocked bis(2,6‐di(acylamino)pyridines) promoted restraint of the back and forward ring motion. The original
Structural Studies on Hydrogen-Bonding Receptors for Barbiturate Guests That Use Metal Ions as Allosteric Inhibitors
作者:Mohammad H. Al-Sayah、Robert McDonald、Neil R. Branda
DOI:10.1002/ejoc.200300389
日期:2004.1
Receptor 1 was designed to bind barbiturate substrates through a six-point hydrogen-bonding motif only in the absence of metalallosteric cofactors. It was predicted that the binding of metalions by bipyridine ligands in 1 would result in a geometric change in the receptor to inhibit substrate recognition. However, receptor 1 showed minimal affinity for the barbiturateguests even in the absence of
Formation of a Hydrogen-Bonded Barbiturate [2]-Rotaxane
作者:Arnaud Tron、Peter J. Thornton、Mathias Rocher、Henri-Pierre Jacquot de Rouville、Jean-Pierre Desvergne、Brice Kauffmann、Thierry Buffeteau、Dominique Cavagnat、James H. R. Tucker、Nathan D. McClenaghan
DOI:10.1021/ol500099u
日期:2014.3.7
Interlocked structures containing the classic Hamilton barbiturate binding motif comprising two 2,6-diamidopyridine units are reported for the first time. Stable [2]-rotaxanes can be accessed either through hydrogen-bonded preorganization by a barbiturate thread followed by a Cu+-catalyzed "click" stoppering reaction or by a Cu2+-mediated Glaser homocoupling reaction.