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N-(Pyrimidin-2-yl)-1,2,3,4-tetrahydroisoquinolin-6-amine Derivatives as Selective Janus Kinase 2 Inhibitors for the Treatment of Myeloproliferative Neoplasms.

Abstract：

:In this study, we described a series of N-(pyrimidin-2-yl)-1,2,3,4-tetrahydroisoquinolin-6-amine derivatives as selective JAK2 (Janus kinase 2) inhibitors. Systematic exploration of the structure-activity relationship though cyclization modification based on previously reported compound 18e led to the discovery of the superior derivative 13ac. Compound 13ac showed excellent potency on JAK2 kinase, SET-2, and Ba/F3V617F cells (high expression of JAK2V617F mutation) with IC50 values of 3, 11.7, and 41 nM, respectively. Further mechanistic studies demonstrated that compound 13ac could downregulate the phosphorylation of downstream proteins of JAK2 kinase in cells. Compound 13ac also showed good selectivity in kinase scanning and potent in vivo antitumor efficacy with 82.3% tumor growth inhibition in the SET-2 xenograft model. Moreover, 13ac significantly ameliorated the disease symptoms in a Ba/F3-JAK2V617F allograft model, with 77.1% normalization of spleen weight, which was more potent than Ruxolitinib.

journal_name

J Med Chem

journal_title

Journal of medicinal chemistry

authors

Yang T,Hu M,Chen Y,Xiang M,Tang M,Qi W,Shi M,He J,Yuan X,Zhang C,Liu K,Li J,Yang Z,Chen L

doi

10.1021/acs.jmedchem.0c01488

subject

Has Abstract

pub_date

2020-12-10 00:00:00

pages

14921-14936

issue

23

eissn

0022-2623

issn

1520-4804

journal_volume

63

pub_type

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