Discovery of an Orally Bioavailable Dual PI3K/mTOR Inhibitor Based on Sulfonyl-Substituted Morpholinopyrimidines.

ABSTRACT: The discovery and optimization of a series of 2-morpholino-pyrimidine derivatives containing various sulfonyl side chains at the C₄ position led to the identification of compound 26 as a potent dual PI3K/mTOR inhibitor. It exhibited high inhibitory activity against PI3Kα/β/γ/δ (IC₅₀ = 20/376/204/46 nM) and mTOR (IC₅₀ = 189 nM), potent functional suppression of AKT phosphorylation (IC₅₀ = 196 nM), and excellent antiproliferative effects on a panel of cancer cells. Enzymic data and modeling simulation indicate that a cyclopropyl ring on the C₄ sulfone chain and a fluorine on the C₆ aminopyridyl moiety are responsible for its maintained PI3K activity and enhanced mTOR potency, respectively. Furthermore, compound 26

SUBMITTER: Shen S 

PROVIDER: S-EPMC6047022 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature