Synthesis and antiproliferative effects of novel 5'-fluorinated analogs of 5'-deoxy-5'-(methylthio)adenosine
作者:Janice R. Sufrin、Arthur J. Spiess、Debora L. Kramer、Paul R. Libby、Carl W. Porter
DOI:10.1021/jm00125a012
日期:1989.5
5'-Deoxy-5'-[(monofluoromethyl)thio]adenosine (9) and 5'-deoxy-5'-fluoro-5'-(methylthio)adenosine (10), two novel analogues of 5'-deoxy-5'-(methylthio)adenosine (MTA), have been synthesized and evaluated for their substrate and inhibitory activities toward MTA phosphorylase and for their biological effects in L1210 (MTA phosphorylase deficient) and L5178Y (MTA phosphorylase containing) murine leukemia
5'-脱氧-5'-[(单氟甲基)硫代]腺苷(9)和5'-脱氧-5'-氟-5'-(甲硫基)腺苷(10),这是5'-脱氧-5的两个新类似物已经合成了'-(甲硫基)腺苷(MTA)并评估了它们对MTA磷酸化酶的底物和抑制活性,以及它们在L1210(MTA磷酸化酶缺陷)和L5178Y(含MTA磷酸化酶)鼠白血病细胞系中的生物学作用。化合物9是一种有效的MTA磷酸化酶竞争性抑制剂,Ki值为3.3 microM,并且还是一种底物,其活性约为MTA的53%。化合物10对磷酸化酶的抑制作用明显较小,Ki值为141 microM。其底物活性的缺乏归因于快速的非酶降解。在L1210和L5178Y细胞中,9的50%生长抑制浓度(48 h)分别为300和200 microM。对于10,这些各自的值为2和0.7 microM。这些系统中9的初始特征表明,它与MTA的不同之处在于它不充当多胺生物合成途径的产物调节剂。