Kini G D, Hostetler S E, Beadle J R, Aldern K A
Department of Medicine, University of California, San Diego, La Jolla 92093-0676, USA.
Antiviral Res. 1997 Nov;36(2):115-24. doi: 10.1016/s0166-3542(97)00048-x.
A series of new lipid prodrugs with the general structure, 1-O-octadecyl-2-X-sn-glycero-3-PFA were synthesized and evaluated for antiviral activity in HCMV-infected human lung fibroblasts (X is -H, -OH or an O-alkyl group of increasing chain length) in order to study structure-activity relationships of PFA lipid prodrugs. The EC50 values for the 2-O-octyl, 2-O-butyl, 2-H, 2-OH, 2-O-methyl and 2-O-ethyl substituted analogs were 1.96, 0.36, 1.0, 0.7, 0.53 and 0.18 microM respectively versus 40 microM for PFA, representing increases in antiviral activity of 20-220 fold. We also synthesized the enantiomer of ODG-PFA, 3-O-octadecyl-sn-glycero-1-PFA, and found that the antiviral activity of both enantiomers as well as the racemate were not significantly different, with EC50 values in the range of 0.67-0.71 microM.
合成了一系列具有通式1-O-十八烷基-2-X-sn-甘油-3-磷酸脂肪酸(PFA)的新型脂质前药,并在人巨细胞病毒(HCMV)感染的人肺成纤维细胞中评估了其抗病毒活性(X为-H、-OH或链长递增的O-烷基),以研究PFA脂质前药的构效关系。2-O-辛基、2-O-丁基、2-H、2-OH、2-O-甲基和2-O-乙基取代类似物的半数有效浓度(EC50)值分别为1.96、0.36、1.0、0.7、0.53和0.18微摩尔,而PFA的EC50值为40微摩尔,这表明抗病毒活性提高了20至220倍。我们还合成了ODG-PFA的对映体3-O-十八烷基-sn-甘油-1-PFA,发现两种对映体以及外消旋体的抗病毒活性没有显著差异,EC50值在0.67至0.71微摩尔范围内。