Antitumor agents of a new structural type are reported. A number of cyanines with mono-, di- and tricyclic nuclei, merocyanines and oxonols have been i. p. screened for antitumor activity against P388 leukemia and B16 melanoma. Among these compounds, monomethin-, trimethin- and pentamethincyanines having naphthothiazole, naphthoxazole and benzindole nuclei resulted in a significant prolongation of the survival time of tumor-bearing mice. Replacement of the conjugated chain system between the terminal two nuclei with a saturated aliphatic chain produced a marked decrease in the antitumor activity. Structure-activity relationships are discussed.
报道了一类新结构类型的抗肿瘤剂。对多种含单、双和
三环核的菁
染料、部花菁和
锇菁进行了腹腔内筛选,以评估它们对P388白血病和B16
黑色素瘤的抗肿瘤活性。在这些化合物中,具有
萘并
噻唑、
萘并
噁唑和苯并
吲哚核的单甲川、三甲川和五甲川菁
染料显著延长了荷瘤小鼠的生存时间。将末端两个核之间的共轭链体系替换为饱和脂肪链会导致抗肿瘤活性的明显下降。文中讨论了结构-活性关系。