In the present work, a practicalsynthesis of 1-aryl-β-carboline-3-carbaldehydes as versatile building blocks and their application in Biginelli reaction is reported. The starting material of the four-step synthesis is racemic tryptophan methyl ester. The procedure involves a Pictet–Spengler cyclization, a dehydrogenation, an ester reduction, and an alcohol oxidation step. The β-carboline-3-carbaldehydes
Practical synthesis of two novel series of 1,3-disubstituted β-carboline derivatives
作者:Péter Ábrányi-Balogh、Balázs Volk、Mátyás Milen
DOI:10.1016/j.tetlet.2017.12.063
日期:2018.2
The synthesis of two novel series of 1,3-disubstituted β-carbolines from 1-aryl-β-carboline-3-carbaldehyde building blocks is reported. In the first case, an efficient synthesis of 1-aryl-β-carboline C-3 tethered tetrahydro-imidazopyridines and their aromatic counterparts was developed. In the second case, the Willgerodt-Kindler three-component reaction was used for the transformation of aldehydes