中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
1-甲基-9H-吡啶并[3,4-b]吲哚-3-羧酸乙酯 | ethyl 1-methyl-β-carboline-3-carboxylate | 33821-71-5 | C15H14N2O2 | 254.288 |
A robust transition-metal-free strategy is presented to access novel β-carboline-tethered benzothiophenone derivatives from 1(3)-formyl-β-carbolines using elemental sulfur activated by Et3N/DMSO. This expeditious catalyst-free reaction proceeds through the formation of β-carboline-based 2-nitrochalcones followed by an incorporation of sulfur to generate multifunctional β-carboline-linked benzothiophenones in good to excellent yields. The synthetic strategy could also be extended towards the synthesis of β-carboline-linked benzothiophenes. Moreover, the afforded products emerged as promising fluorophores and displayed excellent light-emitting properties with quantum yields (ΦF) up to 47%.
A series of bivalent β-carbolines with a piperazine group spacer between 3-methylene units were synthesized and their cytotoxic activities