Lipophilic analogs of sparsomycin as strong inhibitors of protein synthesis and tumor growth: a structure-activity relationship study
作者:Leon A. G. M. Van den Broek、Ester Lazaro、Zbigniew Zylicz、Paul J. Fennis、Frank A. N. Missler、Peter Lelieveld、Marina Garzotto、D. J. Theo Wagener、Juan P. G. Ballesta、Harry C. J. Ottenheijm
DOI:10.1021/jm00128a051
日期:1989.8
Fourteen derivatives of sparsomycin (1) were synthesized. Six of them were prepared following a novel synthetic route starting from the L-amino acid alanine. Some physicochemical properties, viz. lipophilicity and water solubility, of selected derivatives were measured. The biological activity was tested in vitro in cell-free protein synthesis inhibition assays, in bacterial and tumor cell growth inhibition
合成了十四个Sparsomycin(1)的衍生物。从L-氨基酸丙氨酸开始,按照新颖的合成路线制备了其中的六个。一些理化性质,即。测量了所选衍生物的亲脂性和水溶性。在无细胞蛋白质合成抑制试验,细菌和肿瘤细胞生长抑制试验以及小鼠L1210白血病体内模型中体外测试了生物学活性。同样对于选定的药物,确定了小鼠的急性毒性。在蛋白质合成抑制系统中使用了来自真核生物和原核生物的核糖体。观察到亲脂性参数之间存在线性关系。发现小鼠中的水溶性和药物毒性与亲脂性呈线性关系。所有研究的衍生物都比1具有更高的亲脂性。脱羟基斯帕霉素类似物(30-33)表现出一种有趣的现象:疏水性增加,同时水溶性大大增加。我们发现,由于用较大的烷硫基取代了1的SMe基团,药物的疏水性增加导致药物的生物活性增加。但是,不仅疏水性,而且取代基的形状和大小也很重要。在同源系列1-9-10-11-12、21-22-23-24和30-31-32