title: Synthesis and in vitro cytotoxicity of 3-substituted-1,8-diazaanthraquinones produced by Lewis-acid catalyzed hetero Diels-Alder reaction.
abstract: A hetero Diels-Alder reaction of quinoline-5,8-dione with 1-(N,N-dimethylamino)-3-methyl-1-aza-1,3-butadiene proceeded to give 3-methyl-1,8-diazaanthraquinone (100% regioselectivity) in the presence of Lewis-acid catalyst (ZnCl2 or ZnBr2). Subsequent functionalizations of the benzylic methyl group resulted in the 1,8-diazaanthraquinone analogues as potential antitumor agents. The most active compound, 8, exhibited in vitro cytotoxic activity comparable to that of doxorubicin.
authors.affiliation: College of Pharmacy, Chungbuk National University, Cheongju, Korea.
authors.forename: H
authors.initials: H
authors.lastname: Lee
authors.forename: S I
authors.initials: SI
authors.lastname: Lee
authors.forename: S I
authors.initials: SI
authors.lastname: Yang
mesh_terms: D000880:Anthraquinones / Q000138:chemical synthesis* / Q000494:pharmacology; D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D006801:Humans; D013329:Structure-Activity Relationship; D014407:Tumor Cells, Cultured
chemical_list: D000880:Anthraquinones; D000970:Antineoplastic Agents