Synthesis of 2-(p-chlorobenzyl)-3-aryl-6-methoxybenzofurans as selective ligands for antiestrogen-binding sites. Effects on cell proliferation and cholesterol synthesis
摘要:
A series of nonsteroidal compounds, 2-(p-chlorobenzyl)-3-aryl-6-methoxybenzofurans derived from the 2-(p-chlorobenzyl)-6-methoxy-3(2H)-benzofuranones has been synthesized. The key steps in the synthesis were reactions of 2-(p-chlorobenzyl)-6-methoxy-3(2H)-benzofuranones with the arylorganometallic reagents followed by dehydration of the resulting carbinols. The benzofurans are ligands for antiestrogen-binding sites (AEBS) and display no significant interaction with the estrogen receptor (ER). All bind to AEBS with equivalent or greater affinity than tamoxifen. These compounds decrease [H-3]thymidine incorporation in AEBS-containing EL4 lymphoid cells and MCF7 breast cancer cells in a concentration-dependent manner between 10(-8) and 10(-6) M and are generally more inhibitory than tamoxifen. In contrast, they have no effect on [H-3]thymidine incorporation by an AEBS-deficient variant of the MCF7 cell line, RTx6. The present findings of (1) selective and high affinity binding of the benzofurans to AEBS, (2) their concentration-dependent inhibition of [H-3]thymidine incorporation in AEBS-containing cells, and (3) their lack of antiproliferative effect in an AEBS-deficient cell line suggest a functional role for AEBS in mediating the antigrowth effect of these compounds. Two of the more active benzofuran compounds also significantly inhibited de novo cholesterol biosynthesis in EL4 cells which lack ER. This effect could be obtained after 5 h of treatment and preceded significant loss of cell viability. This is the first demonstration that selective ligands of AEBS (other than the known nonsteroidal antiestrogens) interfere with cholesterol biosynthesis-an action that may contribute to their antigrowth effect.
Design, synthesis, and biological evaluation of a novel dual peroxisome proliferator-activated receptor alpha/delta agonist for the treatment of diabetic kidney disease through anti-inflammatory mechanisms
a dual PPAR-α/δ agonist, and the selectivity against PPAR-γ is still to be improved. Sulfuretin has been shown to suppress the expression of PPAR-γ and improve the pathogenesis of diabetic complications. In this study, by hybridizing the carboxylic acid of GFT505 and the parent nucleus of sulfuretin, we pioneeringly designed and synthetized a series of novel dual PPAR-α/δ agonists, expecting to provide
[EN] AURONES AND METHODS OF USING AURONES TO TREAT TUBERCULOSIS<br/>[FR] AURONES ET MÉTHODES D'UTILISATION D'AURONES POUR TRAITER LA TUBERCULOSE
申请人:MIDDLE TENNESSEE STATE UNIV
公开号:WO2020223439A1
公开(公告)日:2020-11-05
This disclosure describes compounds, compositions, and methods for treating or preventing infection or disease including, in some specific embodiments, treating or preventing tuberculosis and/or infection with Mycobacterium tuberculosis (Mtb). In one aspect, this disclosure describes aurones including, for example, aurone 9504, aurone 9505, aurone 9501, aurone 9510, aurone AA2A, and aurone AA8, compositions including aurones, and methods of using aurones for treating or preventing tuberculosis.
The first synthesis of peracetyl glycosyl aurone derivatives and aurone glucosides
作者:Arjun Kafle、Shrijana Bhattarai、Scott T. Handy
DOI:10.1016/j.tet.2020.131528
日期:2020.10
therapeutic importance, also exist in variously glycosylated forms. Although a large number of glycosylated aurone derivatives have been isolated from plant sources, no syntheses have been reported yet. Inspired from this gap, here we report the firstsynthesis of peracetylated glycosyl derivatives of synthetic aurones. The direct O-glycosylation was achieved by reacting 6-hydroxy aurones with 2, 3, 4, 6-tetra-O-acetyl-α-D
Abstract A facile synthesis of novel dispiroheterocycles has been developed through one-pot [3+2] cycloaddition between isatins, amino acids, and aurones. Thirty different dispiroheterocycles were synthesized eusing this method which features mild conditions, convenient operation, and high efficacy. Evaluation of the bioactivity of these dispiroheterocyclic products revealed antiviralactivity against tobacco
effects on these enzymes as both trypsin and amylase were activated, but a significant inhibition was achieved for the lipase enzyme. Upon examining the binding energies of the synthesized compounds with the enzymes, it was observed that the experimental findings partially aligned with the docking results. These in vitro and in silico results of these hybrid aurones against digestive enzymes, signify their
在这项工作中,我们成功设计并合成了一些新型吡咯烷-三唑-橙酮杂化物的文库,即 ( Z )-2-亚苄基-6-((1-(2-(吡咯烷-1-基)乙基)-1 H -1,2,3-三唑-4-基)甲氧基)苯并呋喃-3(2H ) -酮衍生物5(ak)。所有合成的杂化橙酮的结构均根据光谱(FT-IR、1 H NMR、13 C NMR)和 HRMS 数据得到确认。在生物学研究中,分析了合成化合物对消化酶、淀粉酶、脂肪酶和胰蛋白酶的影响。这些化合物对这些酶表现出不同的影响,因为胰蛋白酶和淀粉酶都被激活,但对脂肪酶具有显着的抑制作用。在检查合成化合物与酶的结合能时,观察到实验结果与对接结果部分一致。这些杂种橙酮对抗消化酶的体外和计算机结果表明它们作为抗炎和抗肥胖剂的潜力。