Cyclization reaction of hydrazine with carbazole-2,3-methyl dicarboxylates gave 1,4-dioxo-1,2,3,4-tetrahydropyridazino[4,5-b]carbazoles. Chlorodehydroxylation provided 1,4-dichloropyridazino[4,5-b]carbazoles and nucleophilic substitution gave 1,4-dialkoxy pyridazino[4,5-b]carbazoles. These compounds were tested for cytotoxic activity against L1210 leukemia in mice.
肼与
咔唑-2,3-甲基二
羧酸酯的环化反应得到1,4-二氧-
1,2,3,4-四氢吡啶并[4,5-b]
咔唑。进行
氯去羟基化,得到1,4-二
氯哒嗪[4,5-b]
咔唑,亲核取代得到1,4-二烷氧基
哒嗪[4,5-b]
咔唑。测试了这些化合物对小鼠的L1210白血病的细胞毒活性。