Process development and large-scale synthesis of a c-met kinase inhibitor

…, CJ Cowden, AJ Davies, JS Edwards…

Index: Stewart, Gavin W.; Brands, Karel M. J.; Brewer, Sarah E.; Cowden, Cameron J.; Davies, Antony J.; Edwards, John S.; Gibson, Andrew W.; Hamilton, Simon E.; Katz, Jason D.; Keen, Stephen P.; Mullens, Peter R.; Scott, Jeremy P.; Wallace, Debra J.; Wise, Christopher S. Organic Process Research and Development, 2010 , vol. 14, # 4 p. 849 - 858

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Citation Number: 13

Abstract

A highly convergent synthesis of c-Met kinase inhibitor 1 has been demonstrated on a multikilogram scale using three key fragments: dihalotricyclic core 2, chiral sulfamide side chain 3, and pyrazole boronic ester 4. The chirality in sulfamide side chain 3 was installed using the cheap and readily available starting material (S)-epichlorohydrin. A total of 2.71 kg of 1 were isolated in seven steps (the longest linear sequence).