Synthesis and Anti-HIV Activity of <scp>d</scp>- and <scp>l</scp>-Thietanose Nucleosides
作者:Hyunah Choo、Xin Chen、Vikas Yadav、Jianing Wang、Raymond F. Schinazi、Chung K. Chu
DOI:10.1021/jm050912h
日期:2006.3.1
Various D- and L-thietanose nucleosides were synthesized from D- and L-xylose. The four-membered thietane ring was efficiently synthesized by the cyclization of 1-thioacetyl-3-mesylate (4/38) under basic conditions. Condensation with various heterocyclic bases was conducted via Pummerer-type rearrangement to afford various nucleoside derivatives. Among the synthesized nucleosides, D-uridine (23), D-cytidine
从D-和L-木糖合成了各种D-和L-硫代葡萄糖核苷。通过在碱性条件下将1-硫代乙酰基-3-甲磺酸酯(4/38)环化,可以有效地合成四元硫杂环丁烷环。通过Pummerer型重排进行与各种杂环碱基的缩合,得到各种核苷衍生物。在合成的核苷中,D-尿苷(23),D-胞苷(24),D-5-氟胞苷(25)和L-胞苷(52)类似物显示出中等的抗HIV活性,EC50 = 6.9、1.3,分别为5.8和14.1 microM。但是,这四种核苷类似物在外周血单核细胞和CEM细胞中具有细胞毒性。其他核苷既无活性,也无细胞毒性。有趣的是,氧etanocin A类似物33没有活性。