Journal of Medicinal Chemistry p. 676 - 695 (2020)
Update date:2022-08-15
Topics:
Guo, Weikai
Xing, Yajing
Zhang, Qiansen
Xie, Jiuqing
Huang, Dongxia
Gu, Haijun
He, Peng
Zhou, Miaoran
Xu, Shifen
Pang, Xiufeng
Liu, Mingyao
Yi, Zhengfang
Chen, Yihua
The transcriptional repressor B-cell lymphoma 6 (BCL6) is frequently misregulated in diffuse large B-cell lymphoma (DLBCL) and has emerged as an attractive drug target for the treatments of lymphoma. In this article, a series of N-phenyl-4-pyrimidinamine derivatives were designed and synthesized as potent BCL6 inhibitors by optimizing hit compound N4-(3-chloro-4-methoxyphenyl)-N2-isobutyl-5-fluoro-2,4-pyrimidinediamine on the basis of the structure-activity relationship. Among them, compound 14j displayed the most potent activities, which significantly blocked the interaction of BCL6 with its corepressors, reactivated BCL6 target genes in a dose-dependent manner, and had better effects compared with the two positive controls. Further studies indicated that a low dose of 14j could effectively inhibit germinal center formation. More importantly, 14j not only showed potent inhibition of DLBCL cell proliferation in vitro but also strongly suppressed the growth of DLBCL in vivo.
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