作者:Ismail I. Fasfous、Mustafa M. El-Abadelah、Salim S. Sabri
DOI:10.1002/jhet.5570390133
日期:2002.1
The synthesis of new pyrazolo[4,3-c]β-carbolines (8a,b) is achieved by condensation of the appropriate aldehyde with 3-(4-amino-1,3-dimethylpyrazol-5-yl)indole (4) under Pictet-Spengler reaction conditions. Regioselective cyclization occurred at the usual indole C-2 position as evidenced from the 1H-and 13C nmr spectra of 8a,b which lack the pyrrolic H-2 signal, present in 4 (δ 7.26, 1H, d, Jch-NH
新的吡唑并[4,3 - c ]β-咔啉(8a,b)的合成是通过适当的醛与3-(4-氨基-1,3-二甲基吡唑-5-基)吲哚(4)缩合而实现的。在Pictet-Spengler反应条件下。区域选择性环化发生在通常的吲哚C-2位置,这由8a,b的1 H和13 C nmr光谱证明,该光谱缺少吡咯H-2信号,存在于4中(δ7.26、1H,d,J ch- NH = 2-5 Hz)。