7-amino-2-(2′-pyridyl)quinoline-5,8-quinone-6′-carboxylic acid (4) constituting a potential minimum, potent pharmacophore of streptonigrin (1) and lavendamycin (2), two structurally-related naturally-occurring antitumor-antibiotic, is detailed. In contrast to observations associated with streptonigrin and lavendamycin in which the C-6′ acid potentiates the antitumor, antimicrobial, and cytotoxic activity of the
7-
氨基-2-(2'-
吡啶基)
喹啉-5,8-醌-6'-
羧酸的制备(4),构成链霉菌素(1)和拉温达霉素(2)的潜在最低有效药效基团,两种详细介绍了与结构相关的天然抗肿瘤抗生素。与链霉菌素和拉达霉素相关的观察结果相反,其中C-6'酸增强了天然存在的取代的
7-氨基喹啉-5,8-醌AB环系统的抗肿瘤,抗菌和细胞毒性活性,C-6 4'的
羧酸减弱了7-
氨基-2-(2'-
吡啶基)
喹啉-5,8-醌的抗菌和细胞毒性特性。