Human Toll-like Receptor (TLR) 8-Specific Agonistic Activity in Substituted Pyrimidine-2,4-diamines
摘要:
Activation of human toll-like receptor-8 (TLR8) evokes a distinct cytokine profile favoring the generation of Type 1 helper T cells. A multiplexed high-throughput screen had led to the identification of N-4-butyl-5-iodo-6-methylpyrimidine-2,4-diamine as a pure TLR8 agonist, and a detailed structure-activity relationship study of this chemotype was undertaken. A butyl substituent at N-4 was optimal, and replacement of the 5-iodo group with chloro, bromo, or fluoro groups led to losses in potency, as did the introduction of aromatic bulk. Drawing from our previous structure-based design, several 5-alkylamino derivatives were evaluated. Significant enhancement of potency was achieved in 5-(4-aminobutyl)-N-4-butyl-6-methylpyrimidine-2,4-diamine. This compound potently induced Th1-biasing IFN-gamma And IL-12 in human blood, but lower levels of the proinflammatory cytokines IL-1 beta, IL-6, and IL-8. These results suggest that the inflammatory and reactogenic propensities of this compound could be considerably more favorable than other TLR8 agonists under evaluation.
The various examples presented herein are directed to compounds of the Formula:
wherein R
1
-R
5
are defined herein, and uses of such compounds to, among other things, inhibit an immune response in a subject.
[EN] INHIBITORS OF PHOSPHOINOSITIDE 3-KINASE AND HISTONE DEACETYLASE FOR TREATMENT OF CANCER<br/>[FR] INHIBITEURS DE LA PHOSPHOINOSITIDE 3-KINASE ET DE L'HISTONE DÉSACÉTYLASE POUR LE TRAITEMENT DU CANCER
申请人:US HEALTH
公开号:WO2018237007A1
公开(公告)日:2018-12-27
The present invention is directed to a dual inhibitor of phosphoinositide 3-kinase (PI3K) and histone deacetylase (HDAC), including a core containing a quinazoline moiety or a quinazolin-4(3H)-one moiety, a kinase hinge binding moiety, and a histone deacetylase pharmacophore, a pharmaceutically acceptable salt thereof, a prodrug thereof, or solvate thereof. The present invention is also directed to a histone deacetylase inhibitor, including a core containing a quinazolin-4(3H)-one moiety and a histone deacetylase pharmacophore.
Design, Synthesis, and Biological Evaluation of Quinazolin-4-one-Based Hydroxamic Acids as Dual PI3K/HDAC Inhibitors
作者:Ashish Thakur、Gregory J. Tawa、Mark J. Henderson、Carina Danchik、Suiyang Liu、Pranav Shah、Amy Q. Wang、Garrett Dunn、Md Kabir、Elias C. Padilha、Xin Xu、Anton Simeonov、Surender Kharbanda、Richard Stone、Gurmit Grewal
DOI:10.1021/acs.jmedchem.0c00193
日期:2020.4.23
quinazolin-4-one based hydroxamic acids was rationally designed and synthesized as novel dual PI3K/HDAC inhibitors by incorporating an HDAC pharmacophore into a PI3K inhibitor (Idelalisib) via an optimized linker. Several of these dual inhibitors were highly potent (IC50 < 10 nM) and selective against PI3Kγ, δ and HDAC6 enzymes and exhibited good antiproliferative activity against multiple cancer cell lines
The various examples presented herein are directed to compounds of the Formula:
wherein R1-R5 are defined herein, and uses of such compounds to, among other things, inhibit an immune response in a subject.
INHIBITORS OF PHOSPHOINOSITIDE 3-KINASE AND HISTONE DEACETYLASE FOR TREATMENT OF CANCER
申请人:THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY, DEPARTMENT OF HEALTH AND HUMAN SERVIC
公开号:US20200165257A1
公开(公告)日:2020-05-28
The present invention is directed to a dual inhibitor of phosphoinositide 3-kinase (PI3K) and histone deacetylase (HDAC), including a core containing a quinazoline moiety or a quinazolin-4(3H)-one moiety, a kinase hinge binding moiety, and a histone deacetylase pharmacophore, a pharmaceutically acceptable salt thereof, a prodrug thereof, or solvate thereof. The present invention is also directed to a histone deacetylase inhibitor, including a core containing a quinazolin-4(3H)-one moiety and a histone deacetylase pharmacophore.