Development of Potent and Selective Inhibitors of Aldo–Keto Reductase 1C3 (Type 5 17β-Hydroxysteroid Dehydrogenase) Based on N-Phenyl-Aminobenzoates and Their Structure–Activity Relationships
摘要:
Aldo-keto reductase 1C3 (AKR1C3; type 5 17 beta-hydroxysteroid dehydrogenase) is overexpressed in castration resistant prostate cancer (CRPC) and is implicated in the intratumoral biosynthesis of testosterone and 5 alpha-dihydrotestosterone. Selective AKR1C3 inhibitors are required because compounds should not inhibit the highly related AKR1C1 and AKR1C2 isoforms which are involved in the inactivation of Sa-dihydrotestosterone. NSAIDs, N-phenylanthranilates in particular, are potent but nonselective AKR1C3 inhibitors. Using flufenamic acid, 2-{[3-(trifluoromethyl)phenyl]amino}benzoic acid, as lead compound, five classes of structural analogues were synthesized and evaluated for AKR1C3 inhibitory potency and selectivity. Structure-activity relationship (SAR) studies revealed that a meta-carboxylic acid group relative to the amine conferred pronounced AKR1C3 selectivity without loss of potency, while electron withdrawing groups on the phenylamino B-ring were optimal for AKR1C3 inhibition. Lead compounds did not inhibit COX-1 or COX-2 but blocked the AKR1C3 mediated production of testosterone in LNCaP-AKR1C3 cells. These compounds offer promising leads toward new therapeutics for CRPC.
Design, synthesis and biological research of novel N-phenylbenzamide-4-methylamine acridine derivatives as potential topoisomerase I/II and apoptosis-inducing agents
作者:Bin Zhang、Zhende Dou、Zheng Xiong、Ning Wang、Shan He、Xiaojun Yan、Haixiao Jin
DOI:10.1016/j.bmcl.2019.126714
日期:2019.12
inhibition, western blot assay and cell apoptosis detection. In summary, 9b effectively inhibited the activity of Topo I/II and inducedDNAdamage in CCRF-CEM cells and, moreover, significantly induced cell apoptosis in a concentration-dependent manner. These observations provide new information and guidance for the structural optimization of more novel acridine derivatives.
最初基于氨苯磺酸(m -AMSA)的结构设计和合成了一系列新型的N-苯基苯甲酰胺-4-甲胺a啶衍生物。分子对接表明,代表性化合物9a具有与DNA拓扑异构酶(Topo)II结合的亲和力,与m -AMSA相当,而且9a可以与Topo I发生优先相互作用。合成9a和类似物9b - 9f之后,这些都在体外进行了测试合成的化合物对三种不同的癌细胞系(K562,CCRF-CEM和U937)具有有效的抗增殖活性。其中,化合物9b,9c和9d对CCRF-CEM细胞表现出最高的活性,IC 50值为0.82至0.91μM。此外,9b和9d还显示出对U937细胞的高抗增殖活性,IC 50值分别为0.33和0.23μM。通过Topo I / II抑制,蛋白质印迹分析和细胞凋亡检测评估了这些化合物的药理学机理。综上所述,9b在CCRF-CEM细胞中有效抑制Topo I / II的活性并诱导DNA损伤,此外,以浓度依
Acridone‐Benzimidazole Ring‐Fused Ligands: A New Class of Sensitizers of Lanthanide Luminescence via Low‐Energy Excitation
作者:Emmanuel Deiters、Frédéric Gumy、Jean‐Claude G. Bünzli
DOI:10.1002/ejic.200901148
日期:2010.6
investigations conducted in the same solvent demonstrate that ligand HLAB1 sensitizes europium luminescence (Q(Eu)(L) = 10% and tau(Eu) = 0.93 ms) whereas ligand HLAB2 sensitizes the luminescence of NIR-emitting Ln(III) ions, in particular Yb-III (Q(Yb)(L) = 0.86 % and tau(Yb) = 29.3 mu s). The sensitization efficiencies eta(sens) of both ligands have been determined for these two complexes and found to
N-substituted-3(10H)-acridones as visible-light photosensitizers for organic photoredox catalysis
作者:Kun Chen、Yong Cheng、Yongzhi Chang、Enqin Li、Qing-Long Xu、Can Zhang、Xiaoan Wen、Hongbin Sun
DOI:10.1016/j.tet.2017.12.019
日期:2018.1
N-Substituted-3(10H)-acridones have been established as visible-light organic photocatalyst. These photosensitizers are efficient for oxidative coupling reaction of N-aryl tetrahydroisoquinolines with various nucleophiles. Notably, N-methyl-3(10H)-acridone (Ia) is stable and can be effectively prepared. It is a water-soluble and atom-economic catalyst, and thus holds promise for green chemical applications
In order to explore the structure-activity relationships in the acronycine series, simplified analogues of cis-1,2-diacetoxy-1,2-dihydroacronycine and cis-1,2-diacetoxy-1,2-dihydrobenzo[b]acronycine (S23906-1, under clinical trials) lacking the fused pyran ring, but possessing an acetoxymethyl leaving group at position 4 were prepared. These new analogues only displayed marginal antiproliferative activity