BRD4 Structure–Activity Relationships of Dual PLK1 Kinase/BRD4 Bromodomain Inhibitor BI-2536
摘要:
A focused library of analogues of the dual PLK1 kinase/BRD4 bromodomain inhibitor BI-2536 was prepared and then analyzed for BRD4 and PLK1 inhibitory activities. Particularly, replacement of the cyclopentyl group with a 3-bromobenzyl moiety afforded the most potent BRD4 inhibitor of the series (39j) with a K-i = 8.7 nM, which was equipotent against PLK1. The superior affinity of 39j over the parental compound to BRD4 possibly derives from improved interactions with the WPF shelf. Meanwhile, substitution of the pyrimidine NH with an oxygen atom reversed the PLK1/BRD4 selectivity to convert BI-2536 into a BRD4-selective inhibitor, likely owing to the loss of a critical hydrogen bond in PLK1. We believe further fine-tuning will furnish a BRD4 "magic bullet" or an even more potent PLK1/BRD4 dual inhibitor toward the expansion and improved efficacy of the chemotherapy arsenal.
[EN] PYRROLO[2,3-D]PYRIMIDINE DERIVATIVES AND THEIR USE IN THE TREATMENT OF CANCER<br/>[FR] DÉRIVÉS DE PYRROLO[2,3-D]PYRIMIDINE ET LEUR UTILISATION DANS LE TRAITEMENT DU CANCER
申请人:SENTINEL ONCOLOGY LTD
公开号:WO2021074251A1
公开(公告)日:2021-04-22
The invention provides compounds of the formula (1): or a salt or tautomer thereof wherein A, R1, R2, R3, R4, R5 and R6 are as defined herein. The compounds are inhibitors of Wee1 and/or PLK1 kinase and are envisaged to be useful in the treatment of cancers.
The present invention provides PLK1 inhibitor compounds of formula I:
Useful in the treatment or control of cell proliferative disorders, particularly oncological disorders. These compounds and formulations containing such compounds may be useful in the treatment or control of solid tumors, such as, for example, breast, colon, lung and prostate tumors and other oncological diseases such as non-Hodgkin's lymphomas.
The present invention provides PLK1 inhibitor compounds of formula I:
Useful in the treatment or control of cell proliferative disorders, particularly oncological disorders. These compounds and formulations containing such compounds may be useful in the treatment or control of solid tumors, such as, for example, breast, colon, lung and prostate tumors and other oncological diseases such as non-Hodgkin's lymphomas.
Combining structure- and property-based optimization to identify selective FLT3-ITD inhibitors with good antitumor efficacy in AML cell inoculated mouse xenograft model
FLT3 mutation is among the most common genetic mutations in acute myeloid leukemia (AML), which is also related with poor overall survival and refractory in AML patients. Recently, FLT3 inhibitors have been approved for AML therapy. Herein, a series of new compounds with pyrazole amine scaffold was discovered, which showed potent inhibitory activity against FLT3-ITD and significant selectivity against both FLT3-ITD and AML cells expressing FLT3-ITD. Compound 46, possessing the most promising cellular activity, blocked the autophosphorylation of FLT3 pathway in MV4-11 cell line. Furthermore, the apoptosis and downregulation of P-STAT5 were also observed in tumor cells extracted from the MV411 cell xenografts model upon compound 46 treatment. Compound 46 was also metabolically stable in vitro and suppressed tumor growth significantly in MV4-11 xenografts model in vivo. Compound 46 showed no toxicity to the viscera of mice and caused no decrease in body weight of mice. In conclusion, the results of this study could provide valuable insights into discovery of new FLT3 inhibitors, and compound 46 was worthy of further development as potential drug candidate to treat AML (C) 2019 Elsevier Masson SAS. All rights reserved.
Synthesis of 1-methyl-4-(N-aroyl)-piperidinamides with anti-inflammatory and analgesic activities
Two series of 1-methyl-4-(N-aroyl)-piperidinamides were synthesized and evaluated for their anti-inflammatory and analgesic properties, as well as for their gastrointestinal irritation liability. A non-aromatic derivative, 1-methyl-4-(N-cyclohexanoyl)-piperidinamide, was synthe sized and evaluated in order to obtain a more exhaustive knowledge of the structure-activity relationship. (C) 1998 Elsevier Science S.A. All rights reserved.