Format

Send to

Choose Destination
ACS Med Chem Lett. 2016 Mar 28;7(6):573-8. doi: 10.1021/acsmedchemlett.6b00022. eCollection 2016 Jun 9.

2,8-Disubstituted-1,6-Naphthyridines and 4,6-Disubstituted-Isoquinolines with Potent, Selective Affinity for CDK8/19.

Author information

1
Cancer Research UK Cancer Therapeutics Unit, The Institute of Cancer Research , London SW7 3RP, UK.
2
Merck KGaA, Darmstadt 64293, Germany.

Abstract

We demonstrate a designed scaffold-hop approach to the discovery of 2,8-disubstituted-1,6-naphthyridine- and 4,6-disubstituted-isoquinoline-based dual CDK8/19 ligands. Optimized compounds in both series exhibited rapid aldehyde oxidase-mediated metabolism, which could be abrogated by introduction of an amino substituent at C5 of the 1,6-naphthyridine scaffold or at C1 of the isoquinoline scaffold. Compounds 51 and 59 were progressed to in vivo pharmacokinetic studies, and 51 also demonstrated sustained inhibition of STAT1(SER727) phosphorylation, a biomarker of CDK8 inhibition, in an SW620 colorectal carcinoma human tumor xenograft model following oral dosing.

KEYWORDS:

CDK19; CDK8; aldehyde oxidase; kinase inhibitor; mediator complex

Supplemental Content

Full text links

Icon for American Chemical Society Icon for PubMed Central
Loading ...
Support Center