Synthesis of Pyrrolo- and Pyrido-[1,2-<i>a</i>]benzimidazolequinone Anti-tumor Agents Containing a Fused Cyclopropane Ring
作者:Fawaz Aldabbagh、John O’Shaughnessy
DOI:10.1055/s-2005-861832
日期:——
A cyclopropane ring has been fused onto tetrahydropyrrolo- and tetrahydropyrido-[1,2-a]-benzimidazoles and -benzimidazolequinones via the cycloaddition of diazomethines generated from the thermolysis of N-(allyl and but-3-enyl)benzimidazole-2-Eschenmoser hydrazones (aziridinyl imines). At lower temperatures, the 1,3-dipolar [3 + 2] cycloadduct was obtained for only the N-allylbenzimidazole-2-Eschenmoser
通过 N-(烯丙基和丁-3-烯基)苯并咪唑-2-Eschenmoser 热解产生的重氮亚甲基环加成,环丙烷环已稠合到四氢吡咯并-和四氢吡啶并-[1,2-a]-苯并咪唑和苯并咪唑醌上腙(氮丙啶亚胺)。在较低温度下,仅 N-烯丙基苯并咪唑-2-Eschenmoser 腙得到 1,3-偶极 [3 + 2] 环加合物。