作者:Raghavan Krishnan、S. A. Lang、Marshall M. Siegel
DOI:10.1002/jhet.5570230640
日期:1986.11
The synthesis of 3-amino-7-chloro-1-ethyl-6-fluoro-4(1H)quinolinone derivatives is described. These were investigated for their antibacterial activity.
描述了3-氨基-7-氯-1-乙基-6-氟-4(1 H)喹啉酮衍生物的合成。研究了它们的抗菌活性。
Discovery of Potent and Selective Inhibitors of Cdc2-Like Kinase 1 (CLK1) as a New Class of Autophagy Inducers
represent new promising agents for the treatment of a wide range of medical illnesses. However, safe autophagy inducers for clinical applications are lacking. Inhibition of cdc2-like kinase 1 (CLK1) was recently found to efficiently induce autophagy. Unfortunately, most of the known CLK1 inhibitors have unsatisfactory selectivity. Herein, we report the discovery of a series of new CLK1 inhibitors containing
自噬诱导剂代表了用于治疗多种医学疾病的新的有前途的药物。但是,缺乏用于临床应用的安全自噬诱导剂。最近发现抑制cdc2样激酶1(CLK1)可以有效诱导自噬。不幸的是,大多数已知的CLK1抑制剂的选择性都不令人满意。在这里,我们报告发现了一系列新的包含1 H- [1,2,3]三唑[4,5- c ]喹啉骨架的CLK1抑制剂。其中,化合物25是最有效和最具选择性的,相对于CLK1的IC 50值为2 nM。与化合物络合CLK1的晶体结构25解决了,并且效力和化合物的激酶选择性25被解释。化合物25在体外测定中能够诱导自噬,并且在对乙酰氨基酚(APAP)诱导的肝损伤小鼠模型中显示出显着的保肝作用。总体而言,由于其效价和选择性,化合物25可用作未来的作用机理或自噬相关疾病治疗研究的化学探针或试剂。
Discovery and Optimization of a Novel Series of <i>N</i>-Arylamide Oxadiazoles as Potent, Highly Selective and Orally Bioavailable Cannabinoid Receptor 2 (CB<sub>2</sub>) Agonists
作者:Yuan Cheng、Brian K. Albrecht、James Brown、John L. Buchanan、William H. Buckner、Erin F. DiMauro、Renee Emkey、Robert T. Fremeau、Jean-Christophe Harmange、Beth J. Hoffman、Liyue Huang、Ming Huang、Josie Han Lee、Fen-Fen Lin、Matthew W. Martin、Hung Q. Nguyen、Vinod F. Patel、Susan A. Tomlinson、Ryan D. White、Xiaoyang Xia、Stephen A. Hitchcock
DOI:10.1021/jm800463f
日期:2008.8.1
describe the discovery of a novel class of oxadiazole derivatives from which potent and selective CB2 agonist leads were developed. Initial hit 7 was identified from a cannabinoid target-biased library generated by virtual screening of sample collections using a pharmacophore model in combination with a series of physicochemical filters. 7 was demonstrated to be a selective CB2 agonist (CB2 EC50 = 93
Toll-like receptor-8 agonistic activities in C2, C4, and C8 modified thiazolo[4,5-c]quinolines
作者:Hari Prasad Kokatla、Euna Yoo、Deepak B. Salunke、Diptesh Sil、Cameron F. Ng、Rajalakshmi Balakrishna、Subbalakshmi S. Malladi、Lauren M. Fox、Sunil A. David
DOI:10.1039/c2ob26705e
日期:——
Toll-like receptor (TLR)-8 agonists typified by the 2-alkylthiazolo[4,5-c]quinolin-4-amine (CL075) chemotype are uniquely potent in activating adaptive immune responses by inducing robust production of T helper 1-polarizing cytokines, suggesting that TLR8-active compounds could be promising candidate vaccine adjuvants, especially for neonatal vaccines. Alkylthiazoloquinolines with methyl, ethyl, propyl and butyl groups at C2 displayed comparable TLR8-agonistic potencies; activity diminished precipitously in the C2-pentyl compound, and higher homologues were inactive. The C2-butyl compound was unique in possessing substantial TLR7-agonistic activity. Analogues with branched alkyl groups at C2 displayed poor tolerance of terminal steric bulk. Virtually all modifications at C8 led to abrogation of agonistic activity. Alkylation on the C4-amine was not tolerated, whereas N-acyl analogues with short acyl groups (other than acetyl) retained TLR8 agonistic activity, but were substantially less water-soluble. Immunization in rabbits with a model subunit antigen adjuvanted with the lead C2-butyl thiazoloquinoline showed enhancements of antigen-specific antibody titers.