Identification and structure activity relationship of novel flavone derivatives that inhibit the production of nitric oxide and PGE 2 in LPS-induced RAW 264.7 cells
作者:Ji-Young An、Hwi-Ho Lee、Ji-Sun Shin、Hyung-Seok Yoo、Jong Seon Park、Seung Hwan Son、Sang Won Kim、Jihyun Yu、Jun Lee、Kyung-Tae Lee、Nam-Jung Kim
DOI:10.1016/j.bmcl.2017.03.057
日期:2017.6
In an effort to identify novel anti-inflammatory compounds, a series of flavone derivatives were synthesized and biologically evaluated for their inhibitory effects on the production of nitric oxide (NO) and prostaglandinE2 (PGE2), representative pro-inflammatory mediators, in LPS-induced RAW 264.7 cells. Their structure-activity relationship was also investigated. In particular, we found that compound
Phenylsulfonyl piperazine bridged [1,3]dioxolo[4,5-g]chromenones as promising antiproliferative and antioxidant agents
作者:Rahul V. Patel、Bhupendra M. Mistry、Riyaz Syed、Nikhil M. Parekh、Han-Seung Shin
DOI:10.1016/j.bioorg.2019.03.002
日期:2019.6
Two series of sulfonylpiperazines linked [1,3]dioxolo[4,5-g]chromenones were synthesized featuring phenyl (7a-k) and chalcone (12a-k) bridge representing flavones or homoisoflavonoids core. New molecules are synthesized utilizing aldol condensation to inspect as antioxidants against DPPH and ABTS+ and antiproliferative agents toward selected human cancer cell lines. Cytotoxicity of new compounds was
合成了两个系列的磺酰基哌嗪连接的[1,3] dioxolo [4,5- g ]色农酮,其特征在于代表黄酮或均异黄酮核心的苯基(7a-k)和查尔酮(12a-k)桥。利用羟醛缩合合成新分子,以检测其作为抗DPPH和ABTS +的抗氧化剂以及对选定人类癌细胞系的抗增殖剂。使用SRB分析对非癌MDCK细胞系确认了新化合物的细胞毒性。结果得出结论7和12的单个结构对调节药理作用至关重要,苯磺酰基实体上存在不同的吸电子和给电子官能团会产生多种生物学效应。发现取代基h(OCF 3)和j,k(OCH 3)在清除DPPH和ABTS +以及抑制癌细胞系SK-OV-3和HT-29方面起着至关重要的作用。此外,带有卤素原子的分子,例如取代基bg对HeLa和A-549癌细胞系具有极好的抑制潜力。生物测定数据显示了一些有趣的结构-活性关系,本文对此进行了讨论。结果证明经测试的衍生物是有前途的抗氧化剂和细胞毒性剂,并有
Analogs of N′-hydroxy-N-(4H,5H-naphtho[1,2-d]thiazol-2-yl)methanimidamide inhibit Mycobacterium tuberculosis methionine aminopeptidases
作者:Shridhar Bhat、Omonike Olaleye、Kirsten J. Meyer、Wanliang Shi、Ying Zhang、Jun O. Liu
DOI:10.1016/j.bmc.2012.05.022
日期:2012.7
Our previous target validation studies established that inhibition of methionineaminopeptidases (MtMetAP, type 1a and 1c) from Mycobacteriumtuberculosis (Mtb) is an effective approach to suppress Mtb growth in culture. A novel class of MtMetAP1c inhibitors comprising of N′-hydroxy-N-(4H,5H-naphtho[1,2-d]thiazol-2-yl)methanimidamide (4c) was uncovered through a high-throughput screen (HTS). A systematic
我们之前的目标验证研究表明,抑制来自结核分枝杆菌(Mtb)的甲硫氨酸氨肽酶(MtMetAP,1a 型和 1c 型)是抑制培养物中 Mtb 生长的有效方法。通过高通量筛选 (HTS) 发现了一类新的 MtMetAP1c 抑制剂,包括N '-羟基-N -(4 H ,5 H -萘并[1,2 - d ]噻唑-2-基)甲亚胺酰胺 ( 4c ) )。一项系统的构效关系研究 (SAR) 产生了命中、4b、4h和4k 的变体,带有修饰的 A 环和 B 环作为两种 MtMetAP 的有效抑制剂。除了显示出中等 Mtb 抑制作用的甲氨酰胺4 小时外,使用当前的 MtMetAP 抑制剂组未获得理想的最小抑制浓度 (MIC)。然而,迄今为止产生的 SAR 数据可能证明对进一步调整此类抑制剂作为有效的抗结核药物很有价值。
A versatile approach to flavones via a one-pot Pd(<scp>ii</scp>)-catalyzed dehydrogenation/oxidative boron-Heck coupling sequence of chromanones
作者:Jun Lee、Jihyun Yu、Seung Hwan Son、Jinyuk Heo、Taelim Kim、Ji-Young An、Kyung-Soo Inn、Nam-Jung Kim
DOI:10.1039/c5ob01911g
日期:——
A variety of flavones were expediently synthesized from readily accessible chromanones via a one-pot sequence involving Pd(ii)-catalyzed dehydrogenation and oxidative boron-Heck coupling with arylboronic acid pinacol esters.
INHIBITORS OF METHIONINE AMINOPEPTIDASES AND METHODS OF TREATING DISORDERS
申请人:Liu Jun O.
公开号:US20120196852A1
公开(公告)日:2012-08-02
The invention is directed towards novel naphthoquinone and naphthothiazole compounds, and methods of treating disorders related to MetAP, including tuberculosis and bacterial infection, using various naphthoquinone, hydroxyquinonline, and naphthothiazole compounds.