Isosteric phosphonate analogs of ET-16-OMe. Synthesis and biological evaluation of the enantiomers of 2'-(Trimethylammonio)ethyl 4-(hexadecyloxy)-3-methoxybutanephosphonate and 2'-(trimethylammonio)ethyl 4-(hexadecylthio)-3-methoxybutanephosphonate
作者:Robert Bittman、Hoe Sup Byun、Brenda Mercier、Hassan Salari
DOI:10.1021/jm00029a016
日期:1994.2
(8)] by LiCH2P(O)(OMe)2 using BF3.Et2O in tetrahydrofuran at low temperature. The cytotoxic activities of the hexadecyloxy and hexadecylthio phosphonate analogs of ET-18-OMe (1 and 2) against the murine leukemias WEHI-3B,L1210, and P388 were similar, indicating that substitution of a sulfur atom for oxygen in the long-chain ether does not result in a significant difference in cytotoxicity. The IC50 values
合成了醚连接的抗肿瘤剂1-O-十八烷基-2-O-甲基-sn-甘油-3-磷酸胆碱(ET-18-OMe)的两个等排膦酸酯类似物的对映异构体,并评估了其对多种小鼠的细胞毒性体外和体内白血病细胞系。合成烷氧基和烷硫基类似物(分别为1和2)的关键步骤是通过LiCH2P(O)([]生成环氧化物[十六烷基2-环氧乙烷基甲基醚(4)或十六烷基2-环氧乙烷基甲基硫醚(8)](在低温下在四氢呋喃中使用BF3.Et2O进行OMe)2反应。ET-18-OMe(1和2)的十六烷氧基和十六烷基硫代磷酸酯类似物对小鼠白血病WEHI-3B,L1210和P388的细胞毒活性相似,这表明在长链醚中用硫原子取代氧不会导致细胞毒性的显着差异。1和2的IC50值在1-5 microM的范围内。烷氧基膦酸酯1在抑制植入BALB / C小鼠的WEHI-3B和P388肿瘤的生长中非常有效。烷氧基和烷硫基膦酸酯1和2延长了患有L1210肿