653-47, a potentiator, significantly potentiates the cAMP-response element binding protein (CREB) inhibitory activity of 666-15. 653-47 is also a very weak CREB inhibitor with IC50 of 26.3 μM[1].
653-47 (5-10 μM) synergistically inhibits CREB-mediated gene transcription with 666-15[1].
[1]. Xie F, et al. Discovery of a Synergistic Inhibitor of cAMP-Response Element Binding Protein (CREB)-Mediated Gene Transcription with 666-15. J Med Chem. 2019;62(24):11423-11429.
















