Synthesis of Benzofuro(3,2-f)phthalazine Derivatives.
作者:Henriette LANDELLE、Anne-Marie GODARD、Daniel LADUREE、Edith CHENU、Max ROBBA
DOI:10.1248/cpb.39.3057
日期:——
The reaction of hydrazine with dibenzofuran-1, 2-dicarboxylic anhydrides followed by treatment with acetic acid resulted in the formation of 1, 4-dioxo-1, 2, 3, 4-tetrahydrobenzofuro[3, 2-f]phthalazines. Dibenzofuran-1, 2-dicarboxylic anhydrides were prepared by the Diels-Alder reaction of 2-alkenyl benzofurans and maleic anhydride followed by oxidative aromatization. Chlorination of 1, 4-dioxo-1, 2, 3, 4-tetrahydrobenzofuro[3, 2-f]phthalazines and subsequent nucleophilic substitution afforded 1, 4-dialkoxybenzofuro[3, 2-f]phthalazines. These compounds were subjected to cytotoxicity assay against L1210 mice leukemia as analogues of methoxyllipticines.
肼与二苯并呋喃-1,2-二羧酸酐反应,然后用乙酸处理,生成 1,4-二氧代-1,2,3,4-四氢苯并呋喃并[3,2-f]酞嗪。通过 2-烯基苯并呋喃和马来酸酐的 Diels-Alder 反应以及氧化芳香化,制备出了二苯并呋喃-1,2-二羧酸酐。将 1,4-二氧代-1,2,3,4-四氢苯并呋喃并[3,2-f]酞嗪氯化,然后进行亲核取代,得到了 1,4-二烷氧基苯并呋喃并[3,2-f]酞嗪。这些化合物作为甲氧基酞嗪的类似物,对 L1210 小鼠白血病进行了细胞毒性试验。