Amplification of acetylcholine-binding catenanes from dynamic combinatorial libraries |
| |
| Authors: | Lam Ruby T S Belenguer Ana Roberts Sarah L Naumann Christoph Jarrosson Thibaut Otto Sijbren Sanders Jeremy K M |
| |
| Institution: | Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK. |
| |
| Abstract: | Directed chemical synthesis can produce a vast range of molecular structures, but the intended product must be known at the outset. In contrast, evolution in nature can lead to efficient receptors and catalysts whose structures defy prediction. To access such unpredictable structures, we prepared dynamic combinatorial libraries in which reversibly binding building blocks assemble around a receptor target. We selected for an acetylcholine receptor by adding the neurotransmitter to solutions of dipeptide hydrazones proline-phenylalanine or proline-(cyclohexyl)alanine], which reversibly combine through hydrazone linkages. At thermodynamic equilibrium, the dominant receptor structure was an elaborate 2]-catenane consisting of two interlocked macrocyclic trimers. This complex receptor with a 100 nM affinity for acetylcholine could be isolated on a preparative scale in 67% yield. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
|
