1218918-76-3Relevant articles and documents
CRTH2 antagonist MK-7246: A synthetic evolution from discovery through development
Molinaro, Carmela,Bulger, Paul G.,Lee, Ernest E.,Kosjek, Birgit,Lau, Stephen,Gauvreau, Danny,Howard, Melissa E.,Wallace, Debra J.,O'Shea, Paul D.
supporting information; experimental part, p. 2299 - 2309 (2012/05/20)
In this paper, we report the development of different synthetic routes to MK-7246 (1) designed by the Process Chemistry group. The syntheses were initially designed as an enabling tool for Medicinal Chemistry colleagues in order to rapidly explore structure-activity relationships (SAR) and to procure the first milligrams of diverse target molecules for in vitro evaluation. The initial aziridine opening/cyclodehydration strategy was also directly amenable to the first GMP deliveries of MK-7246 (1), streamlining the transition from milligram to kilogram-scale production needed to support early preclinical and clinical evaluation of this compound. Subsequently a more scalable and cost-effective manufacturing route to MK-7246 (1) was engineered. Highlights of the manufacturing route include an Ir-catalyzed intramolecular N-H insertion of sulfoxonium ylide 41 and conversion of ketone 32 to amine 31 in a single step with excellent enantioselectivity through a transaminase process. Reactions such as these illustrate the enabling impact and efficiency gains that innovative developments in chemo- and biocatalysis can have on the synthesis of pharmaceutically relevant target molecules.
Discovery of MK-7246, a selective CRTH2 antagonist for the treatment of respiratory diseases
Gallant, Michel,Beaulieu, Christian,Berthelette, Carl,Colucci, John,Crackower, Michael A.,Dalton, Chad,Denis, Danielle,Ducharme, Yves,Friesen, Richard W.,Guay, Daniel,Gervais, Franois G.,Hamel, Martine,Houle, Robert,Krawczyk, Connie M.,Kosjek, Birgit,Lau, Stephen,Leblanc, Yves,Lee, Ernest E.,Levesque, Jean-Franois,Mellon, Christophe,Molinaro, Carmela,Mullet, Wayne,O'Neill, Gary P.,O'Shea, Paul,Sawyer, Nicole,Sillaots, Susan,Simard, Daniel,Slipetz, Deborah,Stocco, Rino,S?rensen, Dan,Truong, Vouy Linh,Wong, Elizabeth,Wu, Jin,Zaghdane, Helmi,Wang, Zhaoyin
scheme or table, p. 288 - 293 (2011/02/27)
In this manuscript we wish to report the discovery of MK-7246 (4), a potent and selective CRTH2 (DP2) antagonist. SAR studies leading to MK-7246 along with two synthetic sequences enabling the preparation of this novel class of CRTH2 antagonist are reported. Finally, the pharmacokinetic and metabolic profile of MK-7246 is disclosed.
INDOLE DERIVATIVES AS CRTH2 RECEPTOR ANTAGONISTS
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Page/Page column 20-21, (2010/04/25)
The compound (+) {7R-[[(4-fluorophenyl)sulfonyl](methyl)ammo]-6,7,8,9-tetrahydropyrido[1,2-a]mdol-10-yl}acetic acid and pharmaceutically acceptable salts thereof are antagonists of the PGD2 receptor, CRTH2, and as such are useful in the treatment and/or prevention of CRTH2-meidated diseases such as asthma.