第 36 卷第 2 期 | | Vol. 36 No. 2 | 2006 年 4 月 | Apr 2006 |
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所属栏目:医药及中间体
从β-胸苷出发的司他夫定的合成工艺研究 |
施小新; 刘世领; 陈艳; 易飞; 吕霞; 虞心红(华东理工大学化学与制药学院) |
摘 要:首先β-胸苷与1.5mol的三苯基氯甲烷和1.5mol的吡啶在DMF中反应,生成5′-位羟基的醚化产物(2);化合物2再在三乙胺作用下与2mol的甲烷磺酰氯反应制成甲磺酸酯(3);然后,化合物3在乙醇中与等摩尔的氢氧化钠作用,制备成氧桥化合物(4);化合物4在DMSO中,在2mol的甲醇钠作用下,生成消除反应产物5;化合物3也可在DMSO中与4mol的甲醇钠作用,一步直接得到消除产物5;最后,化合物5脱保护制备得到司他夫定(d4T,1)。当合成采取“β-胸苷→2→3→4→5→1”路线时,五步反应总收率为74%。当合成采取“β-胸苷→2→3→5→1”路线时,四步反应总收率为70%。 |
关键词:司他夫定; β-胸苷; HIV逆转录酶抑制剂; 合成 |
中图分类号:TQ463+54 文献标识码:A 文章编号:1009-9212(2006)02-0014-04 |
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A Practical Synthesis of Stavudine(d4T) from β-Thymidine |
SHI Xiao-Xin; LIU Shi-Ling; CHEN Yan; YI Fei; LU Xia; YU Xin-Hong(College of Chemistry and Pharmaceutical Engineering; East China University of Science and Technology; Shanghai 200237; China) |
Abstract:A practical synthesis of stavudine (d4T) was described. β-Thymidine was treated with 1.5 equiv of Ph3CCl in DMF in the presence of pyridine to form 5′-O-trityl thymidine (2) in 93% yield. The compound 2 then reacted with 2 equiv. of methylsulfonyl chloride and 3 equiv. of Et3N to produce 3′-O-methylsulfonyl-5′-O-trityl thymidine (3) in 98% yield. After the compound 3 was converted into 2,3′-anhydro-5′-O-trityl thymidine(4)in 95% yield by refluxing with equal equiv. of NaOH in ethanol, the compound 4 was the... |
Key words:stavudine(d4T); β-thymidine; HIV reverse transcriptase inhibitors; synthesis |
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基金项目:国家自然科学基金(No.A-20172015);上海市教育发展基金(No:03SG27)。
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收稿日期:2005-12-10
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