This is a full account of our studies into the generation of highly functionalised 2-aryl-1,2-dihydropyridines and 2-methylene-3-aryl-1,2,3,4-tetrahydropyridines via intermolecular aryne ene reactions of Hantzsch esters. Furthermore, exposure to excess aryne revealed unusual 3′-aryl-spiro[benzocyclobutene-1,1′-(3′,4′-dihydropyridines)]. Mechanistic insights are provided by deuterium-labelling studies and DFT calculations, whilst preliminary cytotoxicity investigations reveal that the spirocycles are selective against colon carcinomas over ovarian cancer cell lines and that all the compounds have high selectivity indices with regards to non-cancer cells.
这是我们对通过Hantzsch酯的分子间芳炔烯烯反应生成高度官能化的2-芳基-1,2-二氢吡啶和2-亚甲基-3-芳基-1,2,3,4-四氢吡啶的研究的完整说明。此外,暴露于过量的芳炔中显示出异常的3'-芳基-螺[苯并环丁烷-1,1'-(3',4'-二氢吡啶)]。通过氘标记研究和DFT计算提供了机理洞察,初步细胞毒性研究表明螺环对结肠癌具有选择性,而对卵巢癌细胞系具有高选择性指数,并且所有化合物在非癌细胞方面具有高选择性指数。