title: Synthesis, structure analysis, and antitumor activity of 3,6-disubstituted-1,4-dihydro-1,2,4,5-tetrazine derivatives.
abstract: Fourteen compounds of 3,6-disubstituted-1,4-dihydro-1,2,4,5-tetrazine derivatives were prepared and their structures were confirmed by single-crystal X-ray diffraction and the semi-empirical calculation of PM3 method. This reaction yields the 1,4-dihydro derivatives rather than the 1,2-dihydro derivatives. The central six-membered ring of 1,4-dihydro-1,2,4,5-tetrazine has a chair conformation and therefore is not homoaromatic. Their antitumor activities were evaluated in vitro by SRB method for A-549 and BEL-7402 cells, and MTT method for P-388 and HL-60 cells. The results show that there is one compound which is highly effective against P-388 cells and one compound which is highly effective against HL-60 cells. So it is a kind of compound which possesses potential antitumor activities and is worth to research further.
authors.affiliation: College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China.
authors.forename: Guo-Wu
authors.initials: GW
authors.lastname: Rao
authors.forename: Wei-Xiao
authors.initials: WX
authors.lastname: Hu
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000494:pharmacology*; D049109:Cell Proliferation / Q000187:drug effects*; D018922:HL-60 Cells / Q000187:drug effects; D006801:Humans; D020128:Inhibitory Concentration 50; D007941:Leukemia P388 / Q000473:pathology; D008113:Liver Neoplasms / Q000188:drug therapy; D008175:Lung Neoplasms / Q000473:pathology; D008433:Mathematics; D051379:Mice; D013329:Structure-Activity Relationship; D013777:Tetrazoles / Q000138:chemical synthesis* / Q000494:pharmacology*; D014407:Tumor Cells, Cultured; D014961:X-Ray Diffraction
chemical_list: D000970:Antineoplastic Agents; D013777:Tetrazoles