Drug-induced modifications of the immune response. 12. 4,5-Dihydro-4-oxo-2-(substituted amino)-3-furancarboxylic acids and derivatives as novel antiallergic agents
作者:Robert A. Mack、Walter I. Zazulak、Lesley A. Radov、Jane E. Baer、Jeffrey D. Stewart、Philip H. Elzer、C. Richard Kinsolving、Vassil S. Georgiev
DOI:10.1021/jm00118a008
日期:1988.10
The synthesis of a series of novel 4,5-dihydro-4-oxo-2-(substituted amino)-3-furancarboxylic acids, salts, esters, and amides is described. The title compounds when tested in the mediator-induced dermal vascular permeability and active anaphylaxis assays in rats demonstrated moderate to potent antiallergic activity. The [2-trans-(4-methylphenyl)cyclopropyl]amino analogue 53 emerged as the most active
Synthesis, Design, and Structure–Activity Relationship of the Pyrimidone Derivatives as Novel Selective Inhibitors of Plasmodium falciparum Dihydroorotate Dehydrogenase
The inhibition of Plasmodium falciparum dihydroorotate dehydrogenase (PfDHODH) potentially represents a new treatment option for malaria, as P. falciparum relies entirely on a de novo pyrimidine biosyntheticpathway for survival. Herein, we report a series of pyrimidone derivatives as novel inhibitors of PfDHODH. The most potent compound, 26, showed high inhibition activity against PfDHODH (IC50 =
Compounds possessing antiallergy activity have the formula: ##STR1## wherein R and R.sup.1 are independently hydrogen or alkyl, or R and R.sup.1 together with the attached nitrogen form a heterocyclic ring system selected from the group consisting of piperidinyl, pyrrolidinyl, morpholinyl and 1, 2, 3, 4-tetrohydroquinolinyl, and R.sup.2 is phenyl or phenyl monosubstituted with a lower alkyl, a nitro, a halogenated methyl, a halogen or a lower alkoxy group.
N-(phenyl) or N-(phenylcyclopropyl)-2,5-dihydro-2-oxo-4[(substituted
申请人:Pennwalt Corporation
公开号:US04625040A1
公开(公告)日:1986-11-25
Compounds which possess antiallergy activity have the formula: ##STR1## wherein R is selected from phenyl and phenyl mono or disubstituted with lower alkyl, nitro, halogenated methyl, halogen, lower alkoxy and combinations thereof; wherein R.sup.1 is selected from hydrogen and lower alkyl; and where R.sup.2 is selected from phenyl, phenyl monosubstituted with lower alkyl, nitro, halogenated methyl, halogen, and lower alkoxy, and trans-phenylcyclopropyl in which the phenyl group may be substituted with lower alkyl or halogen.
investigated. This study explored the strategy of RNase L targeting by using a structure-based rational design approach and evaluated the RNase L-binding and inhibitory activities of the yielded 2-((pyrrol-2-yl)methylene)thiophen-4-ones, which exhibited improved inhibitory effect as determined by in vitro FRET and gel-based RNA cleavage assay. A further structural optimization study yielded selected thiophenones
核糖核酸酶 L (RNase L) 通过降解 RNA 以防止病毒复制,在干扰素诱导的先天免疫的抗病毒途径中起着至关重要的作用。因此,调节 RNase L 活性可介导先天免疫反应和炎症。尽管已经报道了一些基于小分子的 RNase L 调节剂,但仅对有限的分子进行了机械研究。本研究通过使用基于结构的合理设计方法探索了 RNase L 靶向策略,并评估了产生的 2-((pyrrol-2-yl)methylene)thiophen-4-ones 的 RNase L 结合和抑制活性,其中表现出改善的抑制作用,如体外测定FRET 和基于凝胶的 RNA 裂解测定。进一步的结构优化研究产生了选定的噻吩酮,其抑制活性比舒尼替尼强 30 倍以上,舒尼替尼是已获批准的激酶抑制剂,据报道具有 RNase L 抑制活性。通过使用对接分析来分析所得噻吩酮与 RNase L 的结合模式。此外,获得的 2-((pyrro