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Structure-Based Discovery and Development of a Series of Potent and Selective Bromodomain and Extra-Terminal Protein Inhibitors.

Abstract：

:BRD4 has recently emerged as a promising drug target. Therefore, identifying novel inhibitors with distinct properties could enrich their use in anticancer treatment. Guided by the cocrystal structure of hit compound 4 harboring a five-membered-ring linker motif, we quickly identified lead compound 7, which exhibited good antitumor effects in an MM.1S xenograft model by oral administration. Encouraged by its high potency and interesting scaffold, we performed further lead optimization to generate a novel potent series of bromodomain and extra-terminal (BET) inhibitors with a (1,2,4-triazol-5-yl)-3,4-dihydroquinoxalin-2(1H)-one structure. Among them, compound 19 was found to have the best balance of activity, stability, and antitumor efficacy. After confirming its low brain penetration, we conducted comprehensive preclinical studies, including a multiple-species pharmacokinetics profile, extensive cellular mechanism studies, hERG assay, and in vivo antitumor growth effect testing, and we found that compound 19 is a potential BET protein drug candidate for the treatment of cancer.

journal_name

J Med Chem

journal_title

Journal of medicinal chemistry

authors

Hu J,Tian CQ,Damaneh MS,Li Y,Cao D,Lv K,Yu T,Meng T,Chen D,Wang X,Chen L,Li J,Song SS,Huan XJ,Qin L,Shen J,Wang YQ,Miao ZH,Xiong B

doi

10.1021/acs.jmedchem.9b01094

subject

Has Abstract

pub_date

2019-09-26 00:00:00

pages

8642-8663

issue

18

eissn

0022-2623

issn

1520-4804

journal_volume

62

pub_type

杂志文章

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