Discovery of First-in-Class, Potent, and Orally Bioavailable Embryonic Ectoderm Development (EED) Inhibitor with Robust Anticancer Efficacy
摘要:
Overexpression and somatic heterozygous mutations of EZH2, the catalytic subunit of polycomb repressive complex 2 (PRC2), are associated with several tumor types. EZH2 inhibitor, EPZ-6438 (tazemetostat), demonstrated clinical efficacy in patients with acceptable safety profile as monotherapy. EED, another subunit of PRC2 complex, is essential for its histone methyltransferase activity through direct binding to trimethylated lysine 27 on histone 3 (H3K27Me3). Herein we disclose the discovery of a first-in-class potent, selective, and orally bioavailable EED inhibitor compound 43 (EED226). Guided by X-ray crystallography, compound 43 was discovered by fragmentation and regrowth of compound 7, a PRC2 HTS hit that directly binds EED. The ensuing scaffold hopping followed by multiparameter optimization led to the discovery of 43. Compound 43 induces robust and sustained tumor regression in EZH2(MUT) preclinical DLBCL model. For the first time we demonstrate that specific and direct inhibition of EED can be effective as an anticancer strategy.
Discovery of First-in-Class, Potent, and Orally Bioavailable Embryonic Ectoderm Development (EED) Inhibitor with Robust Anticancer Efficacy
摘要:
Overexpression and somatic heterozygous mutations of EZH2, the catalytic subunit of polycomb repressive complex 2 (PRC2), are associated with several tumor types. EZH2 inhibitor, EPZ-6438 (tazemetostat), demonstrated clinical efficacy in patients with acceptable safety profile as monotherapy. EED, another subunit of PRC2 complex, is essential for its histone methyltransferase activity through direct binding to trimethylated lysine 27 on histone 3 (H3K27Me3). Herein we disclose the discovery of a first-in-class potent, selective, and orally bioavailable EED inhibitor compound 43 (EED226). Guided by X-ray crystallography, compound 43 was discovered by fragmentation and regrowth of compound 7, a PRC2 HTS hit that directly binds EED. The ensuing scaffold hopping followed by multiparameter optimization led to the discovery of 43. Compound 43 induces robust and sustained tumor regression in EZH2(MUT) preclinical DLBCL model. For the first time we demonstrate that specific and direct inhibition of EED can be effective as an anticancer strategy.
A process for producing a cyanopyridine represented by general formula (3) (wherein R represents hydrogen or halogen; X¹ and X² represent each hydrogen or halogen, provided at least one of them represents halogen; and n represents an integer of 1 or 2), characterized by reacting an ammonium halide with a trichloromethylpyridine represented by general formula (1) (wherein R, X¹, X² and n are each as defined above) in the presence of a metal compound represented by the general formula (2): MXm wherein M represents copper or zinc; X represents halogen or oxygen; and m represents an integer of 2 or 1.
一种生产通式(3)代表的氰基吡啶的工艺(其中R代表氢或卤素;X¹和X²各自代表氢或卤素,但至少其中一个代表卤素;n代表1或2的整数),其特征在于在通式(2)代表的金属化合物存在下,使卤化铵与通式(1)代表的三氯甲基吡啶反应(其中R、X¹、X²和n各自如上定义):MXm 其中 M 代表铜或锌;X 代表卤素或氧;m 代表 2 或 1 的整数。
[EN] USE OF TRIAZOLOPYRIMIDINE, TRIAZOLOPYRIDINE COMPOUNDS AND COMPOSITION THEREOF FOR TREATING PRC2-MEDIATED DISEASES<br/>[FR] UTILISATION DE TRIAZOLOPYRIMIDINE, DE COMPOSÉS DE TRIAZOLOPYRIDINE ET D'UNE COMPOSITION DE CEUX-CI POUR LE TRAITEMENT DE MALADIES MÉDIÉES PAR PRC2<br/>[ZH] 三氮唑并嘧啶、三氮唑并吡啶化合物及其组合物用于治疗PRC2介导的疾病