Discovery of dual orexin receptor antagonists with rat sleep efficacy enabled by expansion of the acetonitrile-assisted/diphosgene-mediated 2,4-dichloropyrimidine synthesis.

Abstract:

:Recent clinical studies have demonstrated that dual orexin receptor antagonists (OX1R and OX2R antagonists or DORAs) represent a novel treatment option for insomnia patients. Previously we have disclosed several compounds in the diazepane amide DORA series with excellent potency and both preclinical and clinical sleep efficacy. Additional SAR studies in this series were enabled by the expansion of the acetonitrile-assisted, diphosgene-mediated 2,4-dichloropyrimidine synthesis to novel substrates providing an array of Western heterocycles. These heterocycles were utilized to synthesize analogs in short order with high levels of potency on orexin 1 and orexin 2 receptors as well as in vivo sleep efficacy in the rat.

journal_name

Bioorg Med Chem Lett

authors

Roecker AJ,Mercer SP,Harrell CM,Garson SL,Fox SV,Gotter AL,Prueksaritanont T,Cabalu TD,Cui D,Lemaire W,Winrow CJ,Renger JJ,Coleman PJ

doi

10.1016/j.bmcl.2014.03.052

subject

Has Abstract

pub_date

2014-05-01 00:00:00

pages

2079-85

issue

9

eissn

0960-894X

issn

1464-3405

pii

S0960-894X(14)00279-0

journal_volume

24

pub_type

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