927872-64-8Relevant academic research and scientific papers
Development of a green and sustainable manufacturing process for gefapixant citrate (MK-7264) Part 3: Development of a one-pot formylation-cyclization sequence to the diaminopyrimidine core
Basu, Kallol,Lehnherr, Dan,Martin, Gary E.,Desmond, Richard A.,Lam, Yu-Hong,Peng, Feng,Chung, John Y.L.,Arvary, Rebecca A.,Zompa, Michael A.,Zhang, Si-Wei,Liu, Jinchu,Dance, Zachary E.X.,Larpent, Patrick,Cohen, Ryan D.,Guzman, Francisco J.,Rogus, Nicholas J.,Di Maso, Michael J.,Ren, Hong,Maloney, Kevin M.
, p. 2462 - 2477 (2020/11/18)
The development of a safe, robust, and efficient manufacturing route for the synthesis of diaminopyrimidine 1, a key intermediate to gefapixant citrate (MK-7264), is described. A full mechanistic understanding of the cyclization step in the presence of guanidine was established by performing isotopic labeling experiments and identification of impurities. Guided by the mechanistic understanding, further attempts to modify the cyclization reaction by employing additives to reduce the triazine (9) formation and guanidine loading will also be presented. This newly developed method delivered compound 1 in 88-94% yield on a commercial scale and addressed the shortcomings of the early synthetic route including high PMI, low atom economy, long cycle-time, and multiple purifications to achieve the desired quality.
NOVEL PROCESS FOR SYNTHESIS OF A PHENOXY DIAMINOPYRIMIDINE COMPOUND
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, (2019/11/12)
Disclosed herein is a novel process for preparing Compound A free base, 5-((2,4-diaminopyrimidin-5-yl)oxy)-4-isopropyl-2-methoxybenzenesulfonamide, and a citrate salt of Compound A with simplified chemistry and a high overall yield: Compound A. In one emb
Identification and SAR of novel diaminopyrimidines. Part 1: The discovery of RO-4, a dual P2X3/P2X2/3 antagonist for the treatment of pain
Carter, David S.,Alam, Muzaffar,Cai, Haiying,Dillon, Michael P.,Ford, Anthony P.D.W.,Gever, Joel R.,Jahangir, Alam,Lin, Clara,Moore, Amy G.,Wagner, Paul J.,Zhai, Yansheng
scheme or table, p. 1628 - 1631 (2009/11/30)
P2X purinoceptors are ligand-gated ion channels whose endogenous ligand is ATP. Both the P2X3 and P2X2/3 receptor subtypes have been shown to play an important role in the regulation of sensory function and dual P2X3/P2X2/3 antagonists offer significant potential for the treatment of pain. A high-throughput screen of the Roche compound collection resulted in the identification of a novel series of diaminopyrimidines; subsequent optimization resulted in the discovery of RO-4, a potent, selective and drug-like dual P2X3/P2X2/3 antagonist.
Diaminopyrimidines as P2X3 and P2X2/3 modulators
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Page/Page column 17, (2008/12/08)
Compounds and methods for treating diseases mediated by a P2X3 and/or a P2X2/3 receptor antagonist, the compounds being of formula (I): wherein R1, R2, R3 and R4 are as defined herein.
Diaminopyrimidines as P2X3 and P2X2/3 modulators
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Page/Page column 31, (2008/06/13)
Compounds and methods for treating diseases mediated by a P2X3 and/or a P2X2/3 receptor antagonist, the methods comprising administering to a subject in need thereof an effective amount of a compound of formula (I): wherein D, X, Rs
Diaminopyrimidines as P2X3 and P2X2/3 modulators
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Page/Page column 32-33, (2010/11/26)
Compounds and methods for treating diseases mediated by a P2X3 and/or a P2X2/3 receptor antagonist, the compounds being of formula (I): wherein D, X, R1, R2, R3, R4, R5, R6
Process for synthesis of phenoxy diaminopyrimidine derivatives
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Page/Page column 19-20, (2010/11/26)
A method for preparing a compound of formula I the method comprising treating a compound of formula d with an iodination reagent, to form the compound of formula I, wherein R1, R2 and R3 are as defined herein.
