Sulfur Extrusion with Tin Radical: Synthesis of 4‘,5‘-Didehydro-5‘-deoxy-5‘-(tributylstannyl)adenosine, an Intermediate for Potential Inhibitors against <i>S</i>-Adenosyl Homocysteine Hydrolase
作者:Hiroki Kumamoto、Sayoko Onuma、Hiromichi Tanaka
DOI:10.1021/jo030256y
日期:2004.1.1
of vinyl fluoride. Because of the susceptibility of 12 to protodestannylation, the (Z)-vinyl iodide (13), prepared in quantitative yield from 12, was used as a substrate for C−C bond formation. Various types of carbon substituents (phenyl, vinyl, trifluorovinyl, ethynyl, and cyano) were introduced to the 5‘-position of the 5-deoxy-β-d-erythro-pent-4-enofuranosyl structure to open up a new route to
已经开发了用于合成潜在的S-腺苷-1-同型半胱氨酸(AdoHcy)水解酶抑制剂的新方法。关键中间体9- [2,3-双-O-(叔丁基二甲基甲硅烷基)-5-(Z)-(三丁基锡烷基)-5-脱氧-β - d-赤型-戊-4-氨基呋喃糖基]腺嘌呤(12)通过4',5'-二氢-5'-脱氧-5'-(苯硫基)腺苷(11)与三丁基锡自由基的硫磺挤出反应制备。发现该反应立体选择性地进行,形成12,而与11的几何形状无关。化合物12容易进行碘化,溴化和氯化反应,并保持构型不变,而氟化反应同时生成了氟乙烯的(Z)-和(E)异构体。由于12对原甲酸酯化的敏感性,从12以定量产率制备的(Z)-乙烯基碘化物(13)被用作C-C键形成的底物。各种类型的碳取代基(苯基,乙烯基,三氟乙烯基,乙炔基和氰基)被引入5-脱氧-β - d-赤-戊-4-烯呋喃糖基结构的5'-位,从而开辟了一条新的途径来取代AdoHcy水解酶的潜在抑制剂。