Synthesis, Structure−Activity Relationships, and Antitumor Studies of 2-Benzoxazolyl Hydrazones Derived from Alpha-(<i>N</i>)-acyl Heteroaromatics
作者:Johnny Easmon、Gerhard Pürstinger、Katrin-Sofia Thies、Gottfried Heinisch、Johann Hofmann
DOI:10.1021/jm060232u
日期:2006.10.1
2-benzoxazolylhydrazones derived from 2-formyl and 2-acetylpyridines. In search of a more efficacious analogue, compounds in which the 2-acetylpyridine moiety has been replaced by 2-acylpyridine and alpha-(N)-acetyldiazine/quinoline groups have been synthesized. The 2-acylpyridyl hydrazones inhibited in vitro cell proliferation in the nM range, whereas the hydrazones derived from the alpha-(N)-acetyldiazines/quinolines
最近,我们已经描述了衍生自2-甲酰基和2-乙酰基吡啶的2-苯并恶唑基hydr唑酮的抗肿瘤活性。为了寻找更有效的类似物,已经合成了其中2-乙酰基吡啶部分已被2-酰基吡啶和α-(N)-乙酰二嗪/喹啉基取代的化合物。2-酰基吡啶基在nM范围内抑制了体外细胞增殖,而衍生自α-(N)-乙酰二嗪/喹啉的在muM范围内抑制了细胞生长。在NCI-60细胞分析中测试的化合物是白血病,结肠癌和卵巢癌细胞的有效抑制剂。E-13k [N-苯并恶唑-2-基-N'-(1-异喹啉-3-基-亚乙基)-肼]比未转化的MCF-10A细胞更有效地抑制MCF-7乳腺癌细胞的增殖。它不会被P-糖蛋白和较弱的MRP底物转运。浓度升高的血清或α(1)-酸性糖蛋白不会降低该化合物的抗增殖活性。在体内中空纤维测定中,E-13k得分为24,并净杀死OVCAR-3(卵巢)和SF2-95(CNS)肿瘤细胞。