35904-02-0Relevant articles and documents
Efficient synthesis of 1,4-thiazepanones and 1,4-thiazepanes as 3d fragments for screening libraries
Pandey, Anil K.,Kirberger, Steven E.,Johnson, Jorden A.,Kimbrough, Jennifer R.,Partridge, Danika K. D.,Pomerantz, William C. K.
supporting information, p. 3946 - 3950 (2020/06/08)
1,4-Thiazepanes and 1,4-thiazepanones represent seven-membered ring systems with highly 3D character and are currently underrepresented in fragment screening libraries. A nuclear magnetic resonance (NMR) fragment screen identified 1,4-acylthiazepanes as new BET (bromodomain and extraterminal domain) bromodomain ligands; however, an efficient and readily diversified synthesis for library development has not been reported. Here we report a one-pot synthesis using α,β-unsaturated esters and 1,2-amino thiols to form 1,4-thiazepanones as precursors to 1,4-thiazepanes with high 3D character. This reaction proceeds in reasonable time (0.5-3 h) and in good yield and tolerates a broad scope of α,β-unsaturated esters. Several 1,4-thiazepanes were synthesized by a two-step transformation and were characterized as new BET bromodomain ligands using protein-observed 19F NMR. This synthesis should provide ready access to diverse 3D fragments for screening libraries.
