Regioselective direct CH arylation of 2a led to thiazoles 2b and 2c with a 4-tolyl moiety in C5- and C4-position displaying 5- to 9-fold increased σ1 affinity.
Thiazole-Based σ<sub>1</sub>Receptor Ligands: Diversity by Late-Stage C−H Arylation of Thiazoles, Structure-Affinity and Selectivity Relationships, and Molecular Interactions
作者:Artur K. Kokornaczyk、Dirk Schepmann、Junichiro Yamaguchi、Kenichiro Itami、Erik Laurini、Maurizio Fermeglia、Sabrina Pricl、Bernhard Wünsch
DOI:10.1002/cmdc.201700166
日期:2017.7.6
derivatives represent promising σ1 ligands with high σ1 affinity and selectivity over the σ2 subtype. To increase ligand efficiency, the thiophene ring was replaced bioisosterically by a thiazole ring, and the pyran ring was opened. Late-stage diversification by regioselective C-Harylation of thiazoles 9 a-c resulted in a set of 53 compounds with high diversity. This set of compounds was analyzed