Design, synthesis, antiviral and cytostatic evaluation of novel isoxazolidine nucleotide analogues with a carbamoyl linker
作者:Kamil Kokosza、Jan Balzarini、Dorota G. Piotrowska
DOI:10.1016/j.bmc.2013.01.007
日期:2013.3
phorylnitrone and N-arylacrylamides in good yields. cis- and trans-isoxazolidine phosphonates obtained herein were evaluated for activity against a broad range of DNA and RNA viruses. None of the compounds were endowed with antiviral activity at subtoxic concentrations. Isoxazolidines having phenyl substituted with halogen (Ar = 2-F-C6H4; 3-Br-C6H4; and 4-Br-C6H4) have been found to inhibit proliferation
5-芳基氨基甲酰基-2-甲基异恶唑烷-3-基-3-膦酸酯已经由N-甲基-C-二乙氧基磷酰基硝酮和N-芳基丙烯酰胺以良好收率合成。评估了本文获得的顺式和反式异恶唑烷膦酸盐对广泛的 DNA 和 RNA 病毒的活性。没有一种化合物在亚毒性浓度下具有抗病毒活性。已发现具有被卤素取代的苯基的异恶唑烷(Ar = 2-FC 6 H 4;3-Br-C 6 H 4;和 4-Br-C 6 H 4)可抑制 L1210、CEM 和 HeLa 细胞的增殖带集成电路50在 100–170 μM 范围内。
A covalent fragment-based strategy targeting a novel cysteine to inhibit activity of mutant EGFR kinase
作者:Naoki Kuki、David L. Walmsley、Kazuo Kanai、Sho Takechi、Masao Yoshida、Ryo Murakami、Kohei Takano、Yuichi Tominaga、Mizuki Takahashi、Shuichiro Ito、Naoki Nakao、Hayley Angove、Lisa M. Baker、Edward Carter、Pawel Dokurno、Loic Le Strat、Alba T. Macias、Carrie-Anne Molyneaux、James B. Murray、Allan E. Surgenor、Tomoaki Hamada、Roderick E. Hubbard
DOI:10.1039/d3md00439b
日期:——
to S797. A fragment-based screen to identify new starting points for an EGFR inhibitor serendipitously identified a fragment that reacted with C775, a previously unexploited residue in the ATP binding pocket for a covalent inhibitor to target. A number of acrylamide containing fragments were identified that selectively reacted with C775. One of these acrylamides was optimized to a highly selective inhibitor
在过去的 20 年中,已经开发了几代抑制表皮生长因子受体 (EGFR) 细胞内激酶结构域活性的 ATP 竞争性抗癌药物。第一代药物(如吉非替尼)可逆结合,随后是第二代药物(如达克替尼),其含有丙烯酰胺部分,可与 ATP 结合口袋中的 C797 形成共价键。T790 守门人残基突变为蛋氨酸会产生耐药性,这给药物结合带来了空间位阻并增加了 ATP 的 Km。开发了第三代药物,例如奥希替尼,它们对 T790M EGFR 有效,其中丙烯酰胺部分与 C797 形成共价键,尽管 S797 突变出现了耐药性。基于片段的筛选用于确定 EGFR 抑制剂的新起点,偶然发现了与 C775 反应的片段,C775 是 ATP 结合口袋中以前未开发的共价抑制剂靶标的残基。鉴定出许多与 C775 选择性反应的含丙烯酰胺片段。其中一种丙烯酰胺被优化为具有亚 1 μM 活性的高选择性抑制剂,该抑制剂对 T790M、C797S
AgSCF3 Radical Addition Based on an Oxidant-Free α,β-Amide (Trifluoromethyl)sulfanylation Reaction
作者:Yang Li、Zhi-Bo Li、Jin Zhang、Yi-Ran Shi、Hong Li、Min-Ge Yang、Wen-Qing Zhu、Qiang-Wei Fan
DOI:10.1055/s-0043-1763759
日期:——
(Trifluoromethyl)sulfanylamides are an important class of organic compounds that are common among natural products and drug molecules. Here, we report a (trifluoromethyl)sulfanylation reaction using silver(I) (trifluoromethyl)sulfide as a free-radical (trifluoromethyl)sulfanylation reagent for β-amide compounds. This reaction does not require stoichiometric oxidants or additional transition-metal catalysts
New 1-(2-pyridinyl)piperazine derivatives were synthesized and tested as inhibitors of the reaginic passive cutaneous anaphylaxis in the rat (PCA), of the histamine-induced bronchospasm in the guinea pig, and of the rat mesenteric mast cell degranulation induced by compound 48/80. On the basis of test results, a series of N-(substituted phenyl)-omega-[4-(2-pyridinyl)-1-piperazinyl]alkanamides was prepared. The nature of substituents at the anilide ring strongly influenced mast cell stabilizing activity, whereas it was less determining in the case of the other two tests. No clear correlation between the most common physicochemical parameters (pi, sigma, Vw volume) of substituents and activity could be detected. With regard to the position of substituents at the anilide ring, the rank order of potency, in the PCA and bronchoconstriction tests, was para greater than meta greater than ortho. Introduction of substituents in the 1-(2-pyridinyl)piperazinyl moiety of the N-(substituted phenyl)propanamide derivatives hardly affected activity, or the effect was deleterious. Some of the new compounds exhibited a simultaneous remarkable activity in all the three assays employed.
MERCHANT, J. R.;PATHARE, P. M., INDIAN J. CHEM., 26,(1987) N 5, 471-472