Development of New Thiophene-Containing Triaryl Pyrazoline Derivatives As PI3Kγ Inhibitors

Overview

Journal Molecules

Publisher MDPI

Specialty Biology

Date 2022 Apr 23

PMID 35458602

Authors

Bing Yang

Bo Zhang

Qun Zhao

Jin Li

Yujun Shi

Affiliations

Soon will be listed here.

Abstract

A series of new thiophene-containing triaryl pyrazoline derivatives, -, were synthesized and evaluated regarding PI3K inhibition activity and anti-tumor potency based on a trial of introducing significant moieties, including pyrazoline and thiophene, and simplifying the parallel ring structures. Most of the tested compounds indicated potent PI3K inhibitory potency, with this series of compounds showing more potency for PI3Kγ than PI3Kα. The top hit seemed more potent than the positive control on inhibiting PI3Kγ (IC values: 0.066 μM versus 0.777 μM) and more selective from PI3Kα (Index values: 645 versus 1.74). It could be inferred that the combination of - and -, as well as the modification of the electron-donating moieties, led to the improvement in potency. The anti-proliferation inhibitory activity and the enzymatic inhibition potency indicated consistent tendencies. The top hit could inhibit the phosphorylation of Akt by inhibiting PI3K through the PI3K-Akt-mTOR pathway. The molecular docking simulation indicated that the binding pattern of into PI3Kγ was preferable than that of PI3Kα, with more hydrogen bond, more π-involved interactions, and fewer π-sulfur interactions. The information in this work is referable for the further development of selective inhibitors for specific isoforms of PI3K.

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