4138-40-3Relevant articles and documents
Promiscuity and selectivity in covalent enzyme inhibition: A systematic study of electrophilic fragments
J?st, Christian,Nitsche, Christoph,Scholz, Therese,Roux, Lionel,Klein, Christian D.
supporting information, p. 7590 - 7599 (2014/12/11)
Covalent ligand-target interactions offer significant pharmacological advantages. However, off-target reactivity of the reactive groups, which usually have electrophilic properties, must be minimized, and the selectivity of irreversible inhibitors is a crucial requirement. We therefore performed a systematic study to determine the selectivity of several electrophilic groups that can be used as building blocks for covalently binding ligands. Six reactive groups with modulated electrophilicity were combined with 11 nonreactive moieties, resulting in a small combinatorial library of 72 fragment-like compounds. These compounds were screened against a group of 11 enzyme targets to assess their selectivity and their potential for promiscuous binding to proteins. The assay results showed a considerably lower degree of promiscuity than initially expected, even for those members of the screening collection that contain supposedly highly reactive electrophiles.
Selective N-alkylation of arylamines with alkyl chloride in ionic liquids: Scope and applications
Monopoli, Antonio,Cotugno, Pietro,Cortese, Marina,Calvano, Cosima Damiana,Ciminale, Francesco,Nacci, Angelo
supporting information; experimental part, p. 3105 - 3111 (2012/06/30)
An efficient N-selective alkylation of primary aromatic amines in molten quaternary ammonium salts, as the solvent, under relatively mild and base-free conditions is presented. On the basis of the Kamlet-Taft parameters and the nucleophilicity of the IL (ionic liquid) anions, the influence of the ionic liquid was evaluated. This protocol was validated on a larger multigram scale and with the syntheses of bioactive heterocycles (e.g., 1,4-benzothiazine and quinoxalines) and new efficient MALDI matrixes. Copyright
A new entry to the phenanthridine ring system
Mondal, Poulomi,Thander, Latibuddin,Chattopadhyay, Shital K.
supporting information; scheme or table, p. 1328 - 1331 (2012/04/04)
A new synthesis of phenanthridine derivatives having three-point diversity has been developed based on the sequential application of three-atom economic processes viz. aza-Claisen rearrangement, ring-closing enyne metathesis and Diels-Alder reaction as key steps. An unexpected isomerisation was observed during aza-Claisen rearrangement of N-allylanilines which may open up new opportunities in heterocyclic synthesis.