2-Aminobenzoxazole ligands of the hepatitis C virus internal ribosome entry site
摘要:
2-Aminobenzoxazoles have been synthesized as ligands for the hepatitis C virus (HCV) internal ribosome entry site (IRES) RNA. The compounds were designed to explore the less basic benzoxazole system as a replacement for the core scaffold in previously discovered benzimidazole viral translation inhibitors. Structure-activity relationships in the target binding of substituted benzoxazole ligands were investigated. (C) 2014 Elsevier Ltd. All rights reserved.
Nucleophilic Substitution of Halogens with Amines in 2- and 4-Nitrophenols
作者:Zbigniew Wróbel、Andrzej Kwast
DOI:10.1055/s-2006-958946
日期:2007.1
Fluorine and chlorine in halonitrophenols are efficiently replaced with alkylamines in acetonitrile or in an excess of the amine at elevated temperature.
卤代硝基苯酚中的氟和氯在高温下被乙腈中的烷基胺或过量的胺有效取代。
Utilization of 2-nitrophenols in annulations with aryl isothiocyanates towards the synthesis of 2-aminobenzoxazoles
作者:Thanh D. Nguyen、Danh T. Tran、Tan N. Huynh、Thang M. Ly、Tung T. Nguyen
DOI:10.1039/d3ra02873a
日期:——
A method for the annulation of 2-nitrophenols with aryl isothiocyanates is reported. The reactions proceeded in the presence of an iron(iii) acetylacetonate catalyst, elemental sulfur, NaOH as a base, and DMSO as a solvent. Derivatives of 2-aminobenzoxazoles bearing nitro, cyano, acetyl, sulfone, secondary amine, and pyrrolyl groups were successfully isolated.
Synthesis of 2-benzyl benzoxazoles and benzothiazoles <i>via</i> elemental sulfur promoted cyclization of styrenes with 2-nitrophenols and <i>N</i>,<i>N</i>-dialkyl-3-nitroanilines
作者:Truong K. Chau、Nguyen T. Ho、Tuan H. Ho、Anh T. Nguyen、Khoa D. Nguyen、Nam T. S. Phan、Ha V. Le、Tung T. Nguyen
DOI:10.1039/d3ob01775c
日期:——
Annulation of 2-nitrophenols and N,N-dialkyl-3-nitroanilines with styrenes in the presence of elemental sulfur and the base DABCO successfully yielded 2-benzyl benzoxazoles and 2-benzyl benzothiazoles, respectively.
Discovery of 5-(4-methylpiperazin-1-yl)-2-nitroaniline derivatives as a new class of SIRT6 inhibitors
作者:Weining Sun、Xiuli Chen、Shenzhen Huang、Wenpei Li、Chenyu Tian、Shengyong Yang、Linli Li
DOI:10.1016/j.bmcl.2020.127215
日期:2020.8
SIRT6 is a deacetylase of histone H3 and inhibitors of SIRT6 have been thought as potential agents for treatment of diabetes. Herein we report the discovery of a series of new SIRT6 inhibitors containing the skeleton 1-phenylpiperazine. Among them, compound 5-(4-methylpiperazin-1-yl)-2-nitroaniline (6d) is the most potent one, which showed an IC50 value of 4.93 mu M against SIRT6 in the Fluor de Lys (FDL) assay. It displayed K-D values of 9.76 mu M and 10 mu M in surface plasmon resonance (SPR) and isothermal titration calorimetry (ITC) assays, respectively. In selectivity assay, 6d showed no activity against other members of the HDAC family (SIRT1-3 and HDAC1-11) at concentrations up to 200 mu M. In a mouse model of type 2 diabetes, 6d could significantly increase the level of glucose transporter GLUT-1, thereby reducing blood glucose. Overall, this study provides a promising lead compound for subsequent drug discovery targeting SIRT6.
[EN] MEDICINAL AGENT COMPRISING THIAZOLIDINE DERIVATIVE OR SALT THEREOF AS ACTIVE INGREDIENT<br/>[FR] AGENT MÉDICINAL COMPRENANT UN DÉRIVÉ DE THIAZOLIDINE OU SEL DE CELUI-CI COMME INGRÉDIENT ACTIF