Discovery of a Novel Highly Selective Histamine H4 Receptor Antagonist for the Treatment of Atopic Dermatitis.

Abstract:

:The histamine H4 receptor (H4R), a member of the G-protein coupled receptor family, has been considered as a potential therapeutic target for treating atopic dermatitis (AD). A large number of H4R antagonists have been disclosed, but no efficient agents controlling both pruritus and inflammation in AD have been developed yet. Here, we have discovered a novel class of orally available H4R antagonists showing strong anti-itching and anti-inflammation activity as well as excellent selectivity against off-targets. A pharmacophore-based virtual screening system constructed in-house successfully identified initial hit compound 9, and the subsequent homology model-guided optimization efficiently led us to discover pyrido[2,3- e]tetrazolo[1,5- a]pyrazine analogue 48 as a novel chemotype of a potent and highly selective H4R antagonist. Importantly, orally administered compound 48 exhibits remarkable efficacy on antipruritus and anti-inflammation with a favorable pharmacokinetic (PK) profile in several mouse models of AD. Thus, these data strongly suggest that our compound 48 is a promising clinical candidate for treatment of AD.

journal_name

J Med Chem

authors

Ko K,Kim HJ,Ho PS,Lee SO,Lee JE,Min CR,Kim YC,Yoon JH,Park EJ,Kwon YJ,Yun JH,Yoon DO,Kim JS,Park WS,Oh SS,Song YM,Cho WK,Morikawa K,Lee KJ,Park CH

doi

10.1021/acs.jmedchem.7b01855

subject

Has Abstract

pub_date

2018-04-12 00:00:00

pages

2949-2961

issue

7

eissn

0022-2623

issn

1520-4804

journal_volume

61

pub_type

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