Synthesis and reactions of 1-(5-azido-5-deoxy-3-O-p toluenesulfonyl-β-d-xylofuranosyl) derivatives of 5-alkyl- and 5-halo-pyrimidines
作者:Najim A. Al-Masoudi、W. Pfleiderer
DOI:10.1016/0008-6215(95)00110-f
日期:1995.9
20 was prepared by treatment of 10 with potassium carbonate in methanol or a basic ion-exchange resin. Reaction of 10 with azide or methanethiolate ions gave 2′-azido- and 2′-thiomethyl-ribonucleosides, respectively. Similarly, 13 gave a 2′-thiomethylribonucleoside on treatment with methanethiolate ion. Treatment of 16 with phenoxythiocarbonyl chloride in basic medium afforded a 2′,3′-anhydro derivative
摘要1-(2-O-乙酰基-5-叠氮基5-脱氧-3--Op-甲苯磺酰基-β-d-木呋喃糖基)-5-碘-,-5-氟-和-5-三氟甲基的化学合成尿嘧啶核苷(11-13)以及胸腺嘧啶类似物10是从糖前体和相应的尿嘧啶碱基中提取的。10-13的部分解封得到5'-叠氮基5'-脱氧核苷14-17。以相同方式获得3',5'-二叠氮基-3',5'-二脱氧核糖核苷。通过在甲醇或碱性离子交换树脂中用碳酸钾处理10来制备2',3'-脱水类似物20。10与叠氮化物或甲硫醇盐离子的反应分别得到2'-叠氮基和2'-硫代甲基-核糖核苷。类似地,13用甲硫醇盐离子处理后得到2'-硫代甲基核糖核苷。在碱性介质中用苯氧硫羰基氯处理16,得到2',