title: Synthesis, characterization and structure-activity relationship of novel N-phosphorylated E,E-3,5-bis(thienylidene)piperid-4-ones.
abstract: In order to design the agents with improved antitumor activity of 3,5-bis(thienylidene)piperid-4-one type, E,E-N-phosphoryl-3,5-bis(thienylidene)piperid-4-ones 6a-c and E,E-N-omega-phosphorylalkyl-3,5-bis-(thienylidene)piperid-4-ones 7a-c were obtained via the direct phosphorylation of the parent NH-3,5-bis(thienylidene)piperid-4-one and by condensation of preformed N-phosphorylalkyl substituted piperidones with thiophene 2-carbaldehyde, respectively. The structures of the compounds were elucidated by (1)H, (31)P, (13)C NMR along with a single crystal X-ray diffraction analysis. Under the action of visible light thermodynamically more stable E,E-isomers slowly undergo photochemical conversion in CDCl(3) solution to the corresponding E,Z-isomers and E,Z-N-methyl-3,5-bis(thienylidene)piperid-4-one 5 was isolated in individual state. The importance of phosphorylation for cytotoxic properties of 3,5-bis(thienylidene)piperid-4-ones towards human carcinoma cell lines Caov3, Scov3, and A549 and influence of olefin configuration on antitumor activity were demonstrated.
authors.affiliation: AN Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova str 28, 119991 Moscow, Russia.
authors.forename: Michael V
authors.initials: MV
authors.lastname: Makarov
authors.forename: Evgeniya S
authors.initials: ES
authors.lastname: Leonova
authors.forename: Ekaterina Yu
authors.initials: EY
authors.lastname: Rybalkina
authors.forename: Paul
authors.initials: P
authors.lastname: Tongwa
authors.forename: Victor N
authors.initials: VN
authors.lastname: Khrustalev
authors.forename: Tatiana V
authors.initials: TV
authors.lastname: Timofeeva
authors.forename: Irina L
authors.initials: IL
authors.lastname: Odinets
mesh_terms: D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D045744:Cell Line, Tumor; D018360:Crystallography, X-Ray; D004354:Drug Screening Assays, Antitumor; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000188:drug therapy; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D015394:Molecular Structure; D009584:Nitrogen / Q000737:chemistry*; D010051:Ovarian Neoplasms / Q000188:drug therapy; D010766:Phosphorylation; D010881:Piperidones / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D013329:Structure-Activity Relationship; D013876:Thiophenes / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology
chemical_list: D000970:Antineoplastic Agents; D010881:Piperidones; D013876:Thiophenes; D009584:Nitrogen