作者:S. Yu. Ryabova、L. M. Alekseeva、E. A. Lisitsa、V. G. Granik
DOI:10.1007/s11172-006-0407-8
日期:2006.7
3-Arylamino-2-formylindoles were converted into oximes and then acetylated to give the corresponding O-acetyl derivatives. Chloroacetylation of the latter was accompanied by elimination of acetic acid, yielding 3-(N-aryl-N-chloroacetyl)amino-2-cyanoindoles. When heated in pyridine, these nitriles underwent cyclization into novel δ-carboline derivatives: 4-amino-1-aryl-2-oxo-1,2-dihydropyrido[3,2-b]indol-3-yl)pyridinium chlorides. The structures of the compounds obtained were proved by IR and 1H NMR spectroscopy and mass spectrometry.
将 3-芳基氨基-2-甲酰基吲哚转化为肟,然后进行乙酰化,得到相应的 O-乙酰基衍生物。后者的氯乙酰化伴随着乙酸的消除,生成 3-(N-芳基-N-氯乙酰基)氨基-2-氰基吲哚。在吡啶中加热后,这些腈类发生环化反应,生成新型的 δ-咔啉衍生物:4-氨基-1-芳基-2-氧代-1,2-二氢吡啶并[3,2-b]吲哚-3-基)吡啶鎓氯化物。通过红外光谱、1H NMR 光谱和质谱分析证明了所获化合物的结构。