Abstract:
:A novel class of therapeutic drug candidates for heart failure, highly potent and selective GRK2 inhibitors, exhibit potentiation of β-adrenergic signaling in vitro studies. Hydrazone derivative 5 and 1,2,4-triazole derivative 24a were identified as hit compounds by HTS. New scaffold generation and SAR studies of all parts resulted in a 4-methyl-1,2,4-triazole derivative with an N-benzylcarboxamide moiety with highly potent activity toward GRK2 and selectivity over other kinases. In terms of subtype selectivity, these compounds showed enough selectivity against GRK1, 5, 6, and 7 with almost equipotent inhibition to GRK3. Our medicinal chemistry efforts led to the discovery of 115h (GRK2 IC50 = 18 nM), which was obtained the cocrystal structure with human GRK2 and an inhibitor of GRK2 that potentiates β-adrenergic receptor (βAR)-mediated cAMP accumulation and prevents internalization of βARs in β2AR-expressing HEK293 cells treated with isoproterenol. Therefore, 115h appears to be a novel class of therapeutic for heart failure treatment.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Okawa T,Aramaki Y,Yamamoto M,Kobayashi T,Fukumoto S,Toyoda Y,Henta T,Hata A,Ikeda S,Kaneko M,Hoffman ID,Sang BC,Zou H,Kawamoto Tdoi
10.1021/acs.jmedchem.7b00443subject
Has Abstractpub_date
2017-08-24 00:00:00pages
6942-6990issue
16eissn
0022-2623issn
1520-4804journal_volume
60pub_type
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