作者:Maxwell A. Casely-Hayford、Klaus Pors、Colin H. James、Laurence H. Patterson、John A. Hartley、Mark Searcey
DOI:10.1039/b508908e
日期:——
The azinomycins are potent antitumour antibiotics that are able to crosslink DNA, but are relatively unstable and unlikely to progress as therapeutic candidates. A prototype analogue 4 with more clinical potential has been designed and synthesised and incorporates the epoxide function of the azinomycins and a nitrogen mustard. Two further analogues 5 and 6 that can alkylate DNA but cannot crosslink the duplex have also been synthesised. Compound 4 crosslinks DNA efficiently at nM concentrations. Compounds 4–6 were submitted to the NCI 60 cell line screen and have similar antitumour activity, although 4 is slightly less active than the non-crosslinking compounds. These observations will be important in the design of further azinomycin analogues with antitumour activity.
氮霉素是一种能交联 DNA 的强效抗肿瘤抗生素,但相对不稳定,不太可能成为治疗候选药物。我们设计并合成了一种更有临床潜力的类似物原型 4,它结合了氮唑霉素的环氧化物功能和氮芥。此外,还合成了能烷基化 DNA 但不能交联双链的另两种类似物 5 和 6。化合物 4 在 nM 浓度下可有效交联 DNA。化合物 4-6 已提交给 NCI 60 细胞系筛选,具有相似的抗肿瘤活性,但化合物 4 的活性略低于非交联化合物。这些观察结果对于设计更多具有抗肿瘤活性的氮霉素类似物非常重要。