Synthesis of 5-thiodidehydropyranylcytosine derivatives as potential anti-HIV agents
作者:Yuichi Yoshimura、Yoshiko Yamazaki、Yukako Saito、Yoshihiro Natori、Tomozumi Imamichi、Hiroki Takahata
DOI:10.1016/j.bmcl.2011.04.006
日期:2011.6
As a part of our ongoing efforts to identify new anti-HIV agents, a 5′-thiopyrano-nucleoside derivative 4, designed based on 4′-thioD4C 1 and cyclohexenylnucleoside 3, was synthesized. The dihydrothiopyran skeleton of 4 was constructed by the ring closing metathesis of 21 which was synthesized from but-2-yne-1,4-diol. After converting the protecting group from MOM to TBS followed by oxidation, a Pummerer-type
随着我们的不断努力,以确定新的抗HIV药物的一部分,5'-喃核苷衍生物4,设计了基于4'- thioD4C 1和cyclohexenylnucleoside 3,合成。4的二氢噻喃骨架通过21的闭环复分解构筑而成,该复分解是由2-2-炔-1,4-二醇合成的。在将保护基由MOM转化为TBS,然后进行氧化之后,Pummerer型硫代糖基化反应24与被硅烷基化的尿嘧啶结合,得到所需的5-硫代二氢硫代吡喃基尿嘧啶25和26,其为端基异构体的混合物。转换25生成胞嘧啶衍生物,然后脱保护得到5-硫代二氢吡喃糖基胞嘧啶衍生物4,收率很高。还评估了4的抗HIV活性。