hygroscopicus, the geldanamycin producer, with 21 aromatic and heteroaromatic amino acids provided new nonquinoid geldanamycin derivatives. Large scale (5 L) fermentation provided four new derivatives in sufficient quantity for full structural characterisation. Among these, the first thiophene derivative of reblastatin showed strong antiproliferative activity towards several human cancer cell lines.
用21种芳香族和杂芳香族
氨基酸对格达那霉素生产商的吸湿链霉菌AHBA封闭突变株进行突变合成补充,提供了新的非喹诺
酮类格尔德霉素衍
生物。大规模(5 L)发酵提供了足够数量的四个新衍
生物,足以进行完整的结构表征。在这些中,复生素的第一个
噻吩衍
生物对几种人类癌
细胞系显示出强大的抗增殖活性。此外,观察到对人热休克蛋白Hsp90α和幽门螺杆菌HpHtpG细菌热休克蛋白的抑制作用,揭示了标记
ATP的强置换性能,证明了Hsps的
ATP结合位点是新
格尔德霉素衍
生物的目标位点。