作者:Mónica Alvarez-Pérez、Stephen M. Goldup、David A. Leigh、Alexandra M. Z. Slawin
DOI:10.1021/ja7102394
日期:2008.2.1
A chemically driven molecular information ratchet is described. The equilibrium macrocycle distribution in a [2]rotaxane is driven away from its 50:50 population of thread binding sites to a 33:67 ratio by benzoylation under the influence of a chiral catalyst The reaction corresponds to a dynamic kinetic resolution of rotaxane co-conformers that interconvert through shuttling.
Aza-peptidyl Michael Acceptors. A New Class of Potent and Selective Inhibitors of Asparaginyl Endopeptidases (Legumains) from Evolutionarily Diverse Pathogens
作者:Marion G. Götz、Karen Ellis James、Elizabeth Hansell、Jan Dvořák、Amritha Seshaadri、Daniel Sojka、Petr Kopáček、James H. McKerrow、Conor R. Caffrey、James C. Powers
DOI:10.1021/jm701311r
日期:2008.5.1
results suggest an evolutionary constraint on the topography of the prime side of the activesite. SAR also revealed that esters in the P1' position are more potent than disubstituted amides and that monosubstituted amides and alkyl derivatives show little or no inhibition. The preferred P1' residues have aromatic substituents. Aza-asparaginyl Michael acceptors react with thiols, which provides insight
Synthesis of fumaramide derived [3]rotaxanes as potential precursors for molecular boxes
作者:Nigel S. Simpkins、Damian F. Weske、Louise Male、Simon J. Coles、Mateusz B. Pitak
DOI:10.1039/c3cc42045k
日期:——
Three new fumaramide-derived [3]rotaxanes have been synthesized, with the aim of macrocycle linking to form a molecular box. In one case, a nine-component templated [3]rotaxane synthesis was accomplished in 40% yield. Rotaxane reduction resulted in an unexpectedly facile de-slipping process.