A hit to lead discovery of novel N-methylated imidazolo-, pyrrolo-, and pyrazolo-pyrimidines as potent and selective mTOR inhibitors.

Abstract:

:A series of N-7-methyl-imidazolopyrimidine inhibitors of the mTOR kinase have been designed and prepared, based on the hypothesis that the N-7-methyl substituent on imidazolopyrimidine would impart selectivity for mTOR over the related PI3Kα and δ kinases. The corresponding N-Me substituted pyrrolo[3,2-d]pyrimidines and pyrazolo[4,3-d]pyrimidines also show potent mTOR inhibition with selectivity toward both PI3α and δ kinases. The most potent compound synthesized is pyrazolo[4,3-d]pyrimidine 21c. Compound 21c shows a Ki of 2 nM against mTOR inhibition, remarkable selectivity (>2900×) over PI3 kinases, and excellent potency in cell-based assays.

journal_name

Bioorg Med Chem Lett

authors

Lee W,Ortwine DF,Bergeron P,Lau K,Lin L,Malek S,Nonomiya J,Pei Z,Robarge KD,Schmidt S,Sideris S,Lyssikatos JP

doi

10.1016/j.bmcl.2013.07.027

subject

Has Abstract

pub_date

2013-09-15 00:00:00

pages

5097-104

issue

18

eissn

0960-894X

issn

1464-3405

pii

S0960-894X(13)00872-X

journal_volume

23

pub_type

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