title: Antitumour activity of novel 1,10-phenanthroline and 5-amino-1,10-phenanthroline derivatives.
abstract: Synthesis and impact on the tumour growth of palladium(II) complex of 5-amino-1,10-phenanthroline Pd(5-NH(2)-phen)(2)(NO(3))(2) and the protonated dimer (phen)(2)(H(+))(BF(4)(-)) have been described. In the reported experiments a cancerous (100% lethality) myeloid subcutaneous tumour (with Graffi-tumour origin) in hamsters was used. The animals were injected i.p. with different doses of the substances. The longest mean survival time (1.65 times longer than the controls) was achieved when the substance Pd(5-NH(2)-phen)(2)(NO(3))(2) was injected into the animals. One of the animals even survived until the 71st day, which is 2.2 times longer than the controls. The compound (phen)(2)(H(+))(BF(4)(-)) prolonged the mean life-time of the animals 1.4 times in comparison to the controls. On the other hand, the Pd(II) complex of 1,10-phenanthroline, Pd(phen)(2)(H(2)O)(NO(3))(2), did not reveal any antitumour activity. Our experience concerning the effect of other drugs on this tumour has shown a survival time no longer than 4-5d after the death of the controls.
authors.affiliation: Institute of Experimental Pathology and Parasitology, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Bl. 25, 1113 Sofia, Bulgaria.
authors.forename: Diana
authors.initials: D
authors.lastname: Wesselinova
authors.forename: Mihail
authors.initials: M
authors.lastname: Neykov
authors.forename: Nikolay
authors.initials: N
authors.lastname: Kaloyanov
authors.forename: Reneta
authors.initials: R
authors.lastname: Toshkova
authors.forename: Georgi
authors.initials: G
authors.lastname: Dimitrov
mesh_terms: D000586:Amination; D000818:Animals; D000970:Antineoplastic Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D006224:Cricetinae; D004305:Dose-Response Relationship, Drug; D004354:Drug Screening Assays, Antitumor; D015394:Molecular Structure; D009374:Neoplasms, Experimental / Q000188:drug therapy*; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D010165:Palladium / Q000737:chemistry; D010618:Phenanthrolines / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D013237:Stereoisomerism; D016019:Survival Analysis; D013997:Time Factors
chemical_list: D000970:Antineoplastic Agents; D009942:Organometallic Compounds; D010618:Phenanthrolines; D010165:Palladium; C025205:1,10-phenanthroline