A pentacyclic aurora kinase inhibitor (AKI-001) with high in vivo potency and oral bioavailability.

Abstract:

:Aurora kinase inhibitors have attracted a great deal of interest as a new class of antimitotic agents. We report a novel class of Aurora inhibitors based on a pentacyclic scaffold. A prototype pentacyclic inhibitor 32 (AKI-001) derived from two early lead structures improves upon the best properties of each parent and compares favorably to a previously reported Aurora inhibitor, 39 (VX-680). The inhibitor exhibits low nanomolar potency against both Aurora A and Aurora B enzymes, excellent cellular potency (IC50 < 100 nM), and good oral bioavailability. Phenotypic cellular assays show that both Aurora A and Aurora B are inhibited at inhibitor concentrations sufficient to block proliferation. Importantly, the cellular activity translates to potent inhibition of tumor growth in vivo. An oral dose of 5 mg/kg QD is well tolerated and results in near stasis (92% TGI) in an HCT116 mouse xenograft model.

journal_name

J Med Chem

authors

Rawson TE,Rüth M,Blackwood E,Burdick D,Corson L,Dotson J,Drummond J,Fields C,Georges GJ,Goller B,Halladay J,Hunsaker T,Kleinheinz T,Krell HW,Li J,Liang J,Limberg A,McNutt A,Moffat J,Phillips G,Ran Y,Safina B,U

doi

10.1021/jm800052b

subject

Has Abstract

pub_date

2008-08-14 00:00:00

pages

4465-75

issue

15

eissn

0022-2623

issn

1520-4804

journal_volume

51

pub_type

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