Phenanthroindolizidines and phenanthroquinolizidines were concisely synthesized by the reductive decyanization of cyano-promoted intramolecular aza-Diels–Alder cycloadducts followed by aryl–aryl coupling. Cyano groups were removed from α-aminoacrylonitriles via treatment with sodium borohydride in 2-propanol in almost quantitative yields; a possible mechanism was proposed and examined using D-labeling experiments
通过
氰基促进的分子内氮杂-Diels-Alder环加合物的还原脱
氰作用,然后进行芳基-芳基偶联,可以精确合成苯并
菲吲哚并
菲和
菲并
喹啉并
菲。通过在2-
丙醇中用
硼氢化钠处理以几乎定量的产率从α-
氨基
丙烯腈中除去
氰基。提出了一种可能的机制,并使用D标记实验进行了研究。讨论了
菲取代模式对三种人类癌
细胞系抗癌活性影响的系统研究。