149965-78-6Relevant articles and documents
An Alkynylpyrimidine-Based Covalent Inhibitor That Targets a Unique Cysteine in NF-κB-Inducing Kinase
Al-Khawaldeh, Islam,Al Yasiri, Mohammed J.,Aldred, Gregory G.,Basmadjian, Christine,Bordoni, Cinzia,Harnor, Suzannah J.,Heptinstall, Amy B.,Hobson, Stephen J.,Jennings, Claire E.,Khalifa, Shaimaa,Lebraud, Honorine,Martin, Mathew P.,Miller, Duncan C.,Shrives, Harry J.,de Souza, Jo?o V.,Stewart, Hannah L.,Temple, Max,Thomas, Huw D.,Totobenazara, Jane,Tucker, Julie A.,Tudhope, Susan J.,Wang, Lan Z.,Bronowska, Agnieszka K.,Cano, Céline,Endicott, Jane A.,Golding, Bernard T.,Hardcastle, Ian R.,Hickson, Ian,Wedge, Stephen R.,Willmore, Elaine,Noble, Martin E. M.,Waring, Michael J.
, p. 10001 - 10018 (2021/07/26)
NF-κB-inducing kinase (NIK) is a key enzyme in the noncanonical NF-κB pathway, of interest in the treatment of a variety of diseases including cancer. Validation of NIK as a drug target requires potent and selective inhibitors. The protein contains a cysteine residue at position 444 in the back pocket of the active site, unique within the kinome. Analysis of existing inhibitor scaffolds and early structure-activity relationships (SARs) led to the design of C444-targeting covalent inhibitors based on alkynyl heterocycle warheads. Mass spectrometry provided proof of the covalent mechanism, and the SAR was rationalized by computational modeling. Profiling of more potent analogues in tumor cell lines with constitutively activated NIK signaling induced a weak antiproliferative effect, suggesting that kinase inhibition may have limited impact on cancer cell growth. This study shows that alkynyl heterocycles are potential cysteine traps, which may be employed where common Michael acceptors, such as acrylamides, are not tolerated.
Formal alkyne aza-prins cyclization: Gold(I)-catalyzed cycloisomerization of mixed N,O-acetals generated from homopropargylic amines to highly substituted piperidines
Cheoljae, Kim,Hyo, Jin Bae,Ji, Hyung Lee,Wook, Jeong,Haejin, Kim,Sampath, Vasu,Young, Ho Rhee
supporting information; scheme or table, p. 14660 - 14661 (2010/02/28)
(Chemical Equation Presented). A new gold(I)-catalyzed cycloisomerization to access highly substituted piperidines has been developed. By combining a conceptually new way of generating iminium ions using cationic gold(I) complexes and an efficient cyclization reaction that can minimize a potentially competing aza-Cope rearrangement, the proposed reaction successfully circumvents a long-standing problem in the classical aza-Prins reaction. Synthetic utility of the catalytic reaction was demonstrated by a synthesis of optically active 2-alkyl-piperidin-4-one.
