Nucleosides. 136. Synthesis and antiviral effects of several 1-(2-deoxy-2-fluoro-.beta.-D-arabinofuranosyl)-5-alkyluracils. Some structure-activity relationships
作者:Tsann Long Su、Kyoichi A. Watanabe、Raymond F. Schinazi、Jack J. Fox
DOI:10.1021/jm00151a025
日期:1986.1
In order to study structure-activity relationships between antiherpetic activity and the size of the C-5 alkyl substituents of 2'-fluoro-ara-U derivatives, six new nucleosides (1c-h) were synthesized. The 5-allyl analogue 1c was prepared by a Pd(II)-catalyzed reaction of 5-(chloromercuri)-1-(2-deoxy-2-fluoro-beta-D-arabinofuranosyl)uracil with allyl chloride. Partial hydrogenation of 1c afforded the
为了研究抗疱疹活性与2'-氟代-ara-U衍生物的C-5烷基取代基的大小之间的构效关系,合成了六个新的核苷(1c-h)。通过5-(氯汞)-1-(2-脱氧-2-氟-β-D-阿拉伯呋喃糖基)尿嘧啶与烯丙基氯的Pd(II)催化反应制备5-烯丙基类似物1c。1c的部分氢化得到5-正丙基衍生物1d(FPAU)。通过使3-O-乙酰基-5-O-苯甲酰基-2-脱氧-2-氟-D-阿拉伯糖基溴化物与相应的5-取代的尿嘧啶缩合获得核苷1e-h。初步的体外数据显示,随着烷基侧链增加一个碳原子单位,抗疱疹药效下降约1个对数级。随着5-取代基大小的增加,细胞毒性也减小。FPAU对HSV-1和HSV-2具有良好的活性。FiPAU仍显示出良好的治疗指数,而高级烷基类似物基本上是无活性的。