Synthesis and in Vitro Activity of Long-Chain 5‘-<i>O</i>-[(Alkoxycarbonyl)phosphinyl]-3‘-azido-3‘-deoxythymidines against Wild-Type and AZT- and Foscarnet-Resistant Strains of HIV-1
作者:Andre Rosowsky、Hongning Fu、Niranjan Pai、John Mellors、Douglas D. Richman、Karl Y. Hostetler
DOI:10.1021/jm970172f
日期:1997.8.1
PFA. Selective removal of one methyl group from the triesters with sodium iodide yielded monosodium salts, whereas treatment with bromotrimethylsilane cleaved both methyl groups while leaving the long-chain alkyl group intact. Neutralization of the resulting [(alkyloxy)carbonyl]phosphonic acids with 2 equiv of sodium methoxide afforded disodium salts of the phosphonic acid moiety. Similar chemistry was
合成了3'-叠氮基3'-脱氧-5'-O-(羧基膦基)胸苷的亲脂性酯(PFA-AZT),并测试了被野生型HIV-1LAI感染的CD4 + HT4-6C细胞的抗逆转录病毒活性,编码逆转录酶(E89K)单点突变的PFA耐药菌株,或AZT耐药临床分离株(A018-post)。1-十八烷基,1-二十烷基和1-二十二烷基氯甲酸酯与亚磷酸三甲酯的Arbuzov缩合反应生成PFA的相应二甲基长链烷基三酯。用碘化钠选择性地从三酯中除去一个甲基,得到一钠盐,而用溴代三甲基硅烷处理可裂解两个甲基,同时保持长链烷基完整。用2当量的甲醇钠中和所得的[(烷氧基)羰基]膦酸,得到膦酸部分的二钠盐。使用相似的化学方法获得PFA胆固醇酯的单钠盐和二钠盐。三酯与五氯化磷反应,然后与AZT偶联,再与碘化钠进行O-去甲基化,得到3'-叠氮基-3'-deoxy-5'-O-[[((1-十八烷基氧基)羰基]次膦酰基]胸苷( 9a),3