A new efficient synthesis of ethyl β-carboline-3-carboxylate (β-CCE) and methyl 4-methyl-β-carboline-3-carboxylate (4-methyl-β-CCM) starting fr
Ethyl β-carboline-3-carboxylate (9) and methyl 4-methyl-β-carboline-3-carboxylate (15) were prepared in high yields by condensing indole-2-carboxaldehyde 5.