Various derivatives of aphidicolin (1) were prepared and their inhibitory effects on purified DNA polymerase α in vitro were assayed. Among these derivatives, the new 3α-, 17, 18-trihydroxyaphidicol-15-ene (24) was as inhibitory as the known 3-deoxy-and 3-oxoaphidicolins, (20) and (14). All the other derivatives with modification of any of the hydroxyl groups of 1 had no effect on the enzyme in vitro. The structure-activity relationships are discussed concerning functionalization on the aphidicolane ring.
制备了阿
菲迪霉素(1)的各种衍
生物,并测定了它们对纯化的
DNA聚合酶α的体外抑制作用。在这些衍
生物中,新的 3α-, 17, 18-三羟基 aphidicol-15-ene (24) 与已知的 3-脱氧-和 3-oxoaphidicolins (20) 和 (14) 一样具有抑制作用。 1 的任何羟基被修饰的所有其他衍
生物在体外对酶没有影响。讨论了有关 aphidicolane 环上的官能化的构效关系。