[EN] NUCLEOSIDE 5'-PHOSPHOROTHIOATE ANALOGUES AND USES THEREOF<br/>[FR] ANALOGUES DE NUCLÉOSIDE 5'-PHOSPHOROTHIOATE ET LEURS UTILISATIONS
申请人:UNIV BAR ILAN
公开号:WO2013132489A1
公开(公告)日:2013-09-12
The invention provides particular mono- and dinucleoside 5'-phosphorothioate analogues, more particularly mono- or di- adenosine or uridine 5'-di- or tri- phosphorothioate analogues in which at least one of the bridging oxygen atoms of the phosphorothioate is replaced by a group such as -CH2-, and at least one of the non- bridging atoms or negatively-charged atoms of the phosphorothioate is either a sulfur atom or a sulfur ion; and pharmaceutical compositions thereof. These compounds are useful for treatment of neurodegenerative diseases or disorders such as Alzheimer's disease.
Metal chelators are potential therapeutic agents for treating diseases such as Wilson’s and Alzheimer’s where the pathology involves an excess of metal-ions (Cu(II) and Zn(II)/Cu(II)/Fe(II/III), respectively). In addition to the high affinity of the metal-ion to the chelators, metal selectivity of the chelators is essential to achieve the therapeutic goal, that is, the successful removal of excess
Novel crown-ether–methylenediphosphonotetrathioate hybrids as Zn(<scp>ii</scp>) chelators
作者:Diana Meltzer、Hugo E. Gottlieb、Aviran Amir、Linda J. W. Shimon、Bilha Fischer
DOI:10.1039/c5dt03935e
日期:——
A 13-membered methylenediphosphonotetrathioate–crown ether hybrid is a water-soluble, air-stable, high-affinity Zn(ii)-chelator, exhibiting selectivity to Zn(ii)vs.Mg(ii), Na(i), and Li(i).
<i>O</i>,<i>O</i>′-Diester Methylenediphosphonotetrathioate: Synthesis, Characterization, and Potential Applications
作者:Aviran Amir、Alon H. Sayer、Rostislav Zagalsky、Linda J. W. Shimon、Bilha Fischer
DOI:10.1021/jo301786m
日期:2013.1.18
in the presence of DBU. Reactionmechanisms are proposed, and all products were characterized by 31P, 13C, and 1H NMR. An X-ray crystal structure was obtained for intermediate 2. The potential of the novel scaffold for selective coordination of metal-ions was examined by coordination of Hg(II) and Pb(II) by 1f, as determined by FT-IR, and chelation of Zn(II), but not Ca(II), by 1b, as determined by 31P/1H
据报道,将亚甲基双(二氯化膦)新转化为四硫代双膦酸酯衍生物。亚甲基双(二氯化膦)与1,2-乙二硫醇在溴仿中在AlCl 3存在下反应,生成亚甲基双(1,3,2-二硫代膦烷-2-硫化物),生成O,O '在DBU存在下与苯酚和烷基醇反应时,生成-二酯-亚甲基二膦酰基四硫代酸酯类似物1a - k。提出了反应机理,并通过31 P,13 C和1 H NMR对所有产物进行了表征。获得中间体2的X射线晶体结构。通过FT-IR测定1f的Hg(II)和Pb(II)的配位,以及Zn(II)而不是Ca(II)的螯合,检查了新型支架对金属离子选择性配位的潜力。),以31b / 1 H NMR测得1b。1g –Ni(II)混合物的紫外可见测量显示出2:1的配体:金属络合物。这些衍生物是潜在的抗氧化剂,并且通过ESR测量定量了它们在Fenton反应中抑制·OH形成的能力。类似物1g被证明是最有效的抗氧化剂(IC 50