Amidation strategy for final-step α-hydroxytropolone diversification
摘要:
alpha-Hydroxytropolones (alpha HTs) are excellent metalloenzyme-inhibiting fragments that have been the basis for the development of potent inhibitors of various therapeutically important enzymes. The following anuscript describes a final-step amidation approach for alpha HT diversification. The method takes advantage of a scalable chromatography-free synthesis of a carboxylic acid-appended alpha HT and the present manuscript describes the conversion of this compound to eight amide-containing alpha HTs three of which should be useful as chemical probes. This general strategy is expected to find widespread usage in both chemical biology and medicinal chemistry studies on alpha HTs. (C) 2018 Elsevier Ltd. All rights reserved.
[EN] COMPOSITIONS AND METHODS FOR INHIBITING INFLUENZA RNA POLYMERASE PA ENDONUCLEASE [FR] COMPOSITIONS ET PROCÉDÉS POUR INHIBER L'ENDONUCLÉASE DE LA PA DE L'ARN POLYMÉRASE DE LA GRIPPE
Troponoids Can Inhibit Growth of the Human Fungal Pathogen Cryptococcus neoformans
作者:Maureen J. Donlin、Anthony Zunica、Ashlyn Lipnicky、Aswin K. Garimallaprabhakaran、Alex J. Berkowitz、Alexandre Grigoryan、Marvin J. Meyers、John E. Tavis、Ryan P. Murelli
DOI:10.1128/aac.02574-16
日期:2017.4
anticryptococcal therapies are needed. The troponoids are based on natural products isolated from western red cedar, and have a broad range of antimicrobial activities. Extracts of western red cedar inhibit the growth of several fungal species, but neither western red cedar extracts nor troponoid derivatives have been tested against C. neoformans We screened 56 troponoids for their ability to inhibit C. neoformans
新型隐球菌是一种常见于免疫抑制患者的病原体。可用两性霉素B和氟康唑治疗,但死亡率仍保持在15%~30%。因此,需要新的和更有效的抗隐球菌疗法。类黄酮是基于从西部红柏中分离出来的天然产物,具有广泛的抗菌活性。西部红柏提取物可抑制几种真菌的生长,但西部红柏提取物和类黄酮衍生物均未针对新型隐球菌进行测试 我们筛选了 56 种类黄酮抑制新型隐球菌生长的能力并评估它们是否具有吸引力开发成抗隐球菌药物的候选药物。我们确定了相对于载体处理的对照化合物抑制 80% 的隐球菌生长的 MIC,并确定了 MIC 范围为 0.2 至 15 μM 的 12 种化合物。我们筛选了 MIC ≤ 20 μM 的化合物在肝肝癌细胞中的细胞毒性。50% 的细胞毒性值 (CC50s) 范围为 4 至 >100 μM。大多数肌钙蛋白的治疗指数(TI、CC50/MIC)较低,大多数<8。然而,两种化合物的 TI 值 > 8,包括 TI
The present disclosure provides compounds of the formula (I), (II), (III), wherein the variables are as defined herein for use in the treatment of fungal infections. In some embodiments, the fungal infection is an infection of Cryptococcus neojormans fungus. Also provided herein are compositions comprising a compound of formula I, II, or III and a second anti-fungal agent.
Troponoid Atropisomerism: Studies on the Configurational Stability of Tropone-Amide Chiral Axes
作者:Danielle R. Hirsch、Anthony J. Metrano、Elizabeth A. Stone、Golo Storch、Scott J. Miller、Ryan P. Murelli
DOI:10.1021/acs.orglett.9b00707
日期:2019.4.5
Configurationally stable, atropisomeric motifs are an important structural element in a number of molecules, including chiral ligands, catalysts, and molecular devices. Thus, understanding features that stabilize chiral axes is of fundamental interest throughout the chemical sciences. The following details the high rotational barriers about the Ar–C(O) bond of tropone amides, which significantly exceed
Antiviral activity of amide-appended α-hydroxytropolones against herpes simplex virus-1 and -2
作者:Andreu Gazquez Casals、Alex J. Berkowitz、Alice J. Yu、Hope E. Waters、Daniel V. Schiavone、Diana M. Kapkayeva、Lynda A. Morrison、Ryan P. Murelli
DOI:10.1039/d2ra06749h
日期:——
to synthesize and test a targeted library of 4 additional amide-appended αHTs. The most potent of this new series had a 50% effective concentration (EC50) for viral inhibition of 72 nM, on par with the most potent αHT antivirals we have found to date. Given the ease of synthesis of amide-appended αHTs, this new class of antiviral compounds and the chemistry to make them should be highly valuable in future
Compositions and methods for inhibiting influenza RNA polymerase PA endonuclease
申请人:The Regents of the University of California
公开号:US10889556B2
公开(公告)日:2021-01-12
There are provided inter alia metalloenzyme inhibitors, such as inhibitors of influenza A RNA dependent RNA polymerase PA subunit endonuclease, and methods of synthesis and use of the same.
除其他外,还提供了金属酶抑制剂,例如甲型流感 RNA 依赖性 RNA 聚合酶 PA 亚基内切酶抑制剂,以及合成和使用这些抑制剂的方法。