Analogs of sandramycin (1) are synthesized and shown to have cytoxicity against various tumor cell types. The relative cytotoxic properties of the sandramycin analogs are approximately parallel tp their relative DNA binding affinities. An exception to this generalization is compound (4) which completely the sandramycin chromophore phenol. Although typically 4-10× less potent than sandramycin against leukemia cell lines, compound (4) proved to be 1-10,000× more potent against melanomas, carcinomas, and adenocarcinomas exhibiting IC50 values of 1 pM-10 nM. This activity places compound (4) amongst the most potent agents identified to date.
合成了类沙德拉霉素(1)的类似物,并显示出对各种肿瘤细胞类型的细胞毒性。类沙德拉霉素类似物的相对细胞毒性大约与它们相对于DNA结合亲和力相平行。这个概括的例外是化合物(4),它完全替代了沙德拉霉素的色团
酚。虽然与白血病
细胞系相比,化合物(4)通常比沙德拉霉素弱10倍至4倍,但它被证明对
黑色素瘤、癌和腺癌的作用是1 pM-10 nM,是迄今为止发现的最有效的药物之一。