SYNTHESIS OF A BIS-MESYLATE SALT OF 4-AMINO-N-(1 -((3-CHLORO-2- FLUOROPHENYL)AMINO)-6-METHYLISOQUINOLIN-5-YL)THIENO[3,2- D]PYRIMIDINE-7-CARBOXAMIDE AND INTERMEDIATES THERETO

A manufacturing process to a bis-mesylate salt 1b of the pan-RAF inhibitor 4-amino-n-(1-((3-chloro-2-fluorophenyl)amino)-6-methylisoquinolin-5-yl)thieno[3,2-d]pyrimidine-7-carboxamide. The process features a number of efficient key reactions, including a robust and scalable Pd-catalyzed carbonylatio...

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Main Authors BACHMANN, Stephan, ZHANG, Haiming, CARRERA, Diane Elizabeth, BIGLER, Raphael, MONDIERE, Regis Jean Georges, KOENIG, Stefan G, ZELL, Daniel, STUMPF, Andreas, NAKAGAWA, Yuki, ZHANG, Jie, GE, Yonghui, GOSSELIN, Francis, MERCADO-MARIN, Eduardo V, FINET, Laure Elisabeth Simone, DALZIEL, Michael Euan
Format Patent
LanguageEnglish
Published 04.01.2024
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:A manufacturing process to a bis-mesylate salt 1b of the pan-RAF inhibitor 4-amino-n-(1-((3-chloro-2-fluorophenyl)amino)-6-methylisoquinolin-5-yl)thieno[3,2-d]pyrimidine-7-carboxamide. The process features a number of efficient key reactions, including a robust and scalable Pd-catalyzed carbonylation reaction to generate thienopyrimidine 2 and a highly chemoselective Pt/V/C-catalyzed nitro group reduction to access penultimate intermediate 7. The final amide coupling of 7 and 2 was accomplished by a mild and safe protocol employing N,N,N',N'-tetramethylchloroformamidinium hexafluorophosphate (TCFH) as the coupling reagent, to produce a 1:1 adduct of the freebase and THF. The adduct afforded compound 1b with excellent yield, purity, and form stability on a multikilogram production scale after reaction with MsOH and recrystallization. The methods are able to produce a compound having upwards of 95% purity.
Bibliography:Application Number: AU20220303488