已建议对组蛋白脱乙酰基酶8(HDAC8)的特异性抑制是治疗神经母细胞瘤和T细胞恶性肿瘤的有前途的选择。研究了一种新型的高效和选择性HDAC8抑制剂,该抑制剂具有嘧啶并[1,2- c ] [1,3]苯并噻嗪-6-亚胺骨架,与包含锌结合基团的传统HDAC抑制剂概念完全不同( ZBG),在大多数情况下可能与目标蛋白表面相互作用的异羟肟酸酯基团,间隔基和封端基团。尽管缺少ZBG,但一些新化合物显示出对HDAC8的出色效价(单位为几纳摩尔)。嘧啶基[1,2- c] [1,3]苯并噻嗪-6-亚胺也抑制实体瘤和血液肿瘤细胞的生长。新型HDAC抑制剂类别的小尺寸和有益的理化性质突显了高度的药物相似性。这种和广泛的结构-活性关系表明,将具有嘧啶并[1,2- c ] [1,3]苯并噻嗪-6-亚胺骨架的化合物进一步开发为创新的高效抗癌药物的巨大潜力。
imidazole-containing organoboronic acid catalysts is described. This catalytic process with low catalyst loading enables the introduction of a wide variety of acyl functional groups into the equatorial position of cis-vicinal diols in unprotected hexapyranosides with excellent site selectivity. This is the first example that uses a Lewis base-containing boronicacid to enhance the nucleophilicity of
[EN] SELECTIVE HDAC8 INHIBITORS AND THEIR USES<br/>[FR] INHIBITEURS DE HDAC8 SÉLECTIFS ET LEURS UTILISATIONS
申请人:HOCHSCHULE DARMSTADT
公开号:WO2017077008A1
公开(公告)日:2017-05-11
The present invention relates to small molecule compounds based on benzopyrimido- or benzoimidazo-thiazin-imine as well as their (synthesis) intermediates and their use as HDAC inhibitors, in particular HDAC8 inhibitors. The present invention also relates to the use of said compounds in the treatment of cancer and as therapeutic agents for eukaryotic parasites and respective methods of treatment.
Ligandless Nickel-Catalyzed <i>Ortho</i>-Selective Directed Trifluoromethylthiolation of Aryl Chlorides and Bromides Using AgSCF<sub>3</sub>
作者:Tin Nguyen、Weiling Chiu、Xinying Wang、Madeleine O. Sattler、Jennifer A. Love
DOI:10.1021/acs.orglett.6b02689
日期:2016.11.4
A mild protocol for Ni-catalyzed trifluoromethylthiolation of aryl chlorides and bromides is described herein. The method utilizes AgSCF3 as an easily accessible nucleophilic trifluoromethylthiolating reagent and does not require any ligands or additives. Ortho-selectivity is achieved using a variety of directing groups such as imines, pyridines, and oxazolines for 24 examples in up to 95% yield.
CuI catalyzed synthesis of Dibenzo[b,f]imidazo[1,2-d][1,4]thiazepines via C–N and C–S bond Ullmann cross-coupling reaction
作者:Zhuo-Huan Li、Tuan-Jie Li、Jian-Quan Liu、Xiang-Shan Wang
DOI:10.1016/j.tet.2019.130915
日期:2020.2
The Ullmann cross-couplingreaction between 2-(2-bromophenyl)-4,5-diphenyl- 1H-imidazole and 2-bromobenzenethiol occurred to give 2,3-diaryldibenzo[b,f]imidazo[1,2-d] [1,4]thiazepines in good yields. Two new bonds of Csp2-N and Csp2-S were built under the same catalytic system of CuI/o-phen in the presence of K2CO3.
发生2-(2-溴苯基)-4,5-二苯基-1H-咪唑与2-溴苯硫醇之间的乌尔曼交叉偶联反应,得到2,3-二芳基二苯并[ b,f ]咪唑[1,2- d ] [1,4]噻氮平产量高。在K 2 CO 3存在下,在相同的CuI / o- phen催化体系下建立了Csp 2 -N和Csp 2 -S的两个新键。
Synthesis and structure activity relationship of 1, 3-benzo-thiazine-2-thiones as selective HDAC8 inhibitors
least HDAC isoenzyme selective inhibitors. In addition, hydroxamates have recently come under discussion regarding their potential for mutagenicity. Recently, PD-404,182 was discovered as a selective and potent non-hydroxamate inhibitor of HDAC8. However, this active compound turned out to be decomposed in the presence of glutathion (GSH). Here, we describe the synthesis of significantly improved analogs