The present invention relates generally to the field of therapeutic compounds. More specifically, the present invention relates to certain substituted pyrazolo[1,5-a]pyrimidin-7-amine compounds PPA that specifically inhibit
cyclin-dependent
protein kinases (CDKs), particularly CDK12 and / or CDK13, e.g., selective for CDK12 and / or CDK13 over CDK7. In addition to selectively inhibiting CDK12 and / or CDK13, the compounds also act as selective
cyclin K degraders, thereby removing key cofactors required for CDK12 and / or CDK13 activation. This provides additional cellular
potency and selectivity. The present invention also relates to methods for inhibiting CDKs, particularly CDK12 and / or CDK13; and to disorders associated with CDKs, particularly CDK12 and / or CDK13, disorders resulting from inappropriate activity of CDKs, particularly CDK12 and / or CDK13, disorders associated with CDK mutations, particularly CDK12 mutations and / or CDK13 mutations, disorders associated with CDK overexpression, particularly CDK12 and / or CDK13 overexpression, disorders associated with pathway activation upstream of CDKs, particularly CDK12 and / or CDK13, The present invention relates to pharmaceutical compositions comprising such compounds, and to the use of such compounds and compositions, both
in vitro and
in vivo, for treating disorders that are ameliorated by inhibition of CDK12 and / or CDK13, including proliferative disorders;
cancer; viral infections (including HIV); neurodegenerative disorders (including Alzheimer's
disease and Parkinson's
disease);
ischemia;
kidney disease; cardiovascular disorders (including atherosclerosis); autoimmune disorders (including
rheumatoid arthritis), and disorders caused by dysfunction of translation in cells (including muscular dystrophies). Optionally, the treatment further comprises treatment (e.g., simultaneous or
sequential treatment) with additional active agents, such as
DNA repair inhibitors,
immune checkpoint inhibitors,
immune system stimulants,
cell cycle checkpoint inhibitors, Her2 blockers, transcription inhibitors, cytotoxic chemotherapeutic agents, and the like.