The phytochemical investigation of the leaves and stems of Murraya tetramera C. C. Huang, a traditional folk medicine used as an anti-inflammatory agent, yielded 19 simple carbazole alkaloids, two of which (1-ethoxy-2-hydroxy-3-methylcarbazole and 1,7-dimethoxy-8-formyl-2-hydroxy-3-methylcarbazole,
Two new alkaloids, 9-carbethoxy-3-methylcarbazole and 9-formyl-3-methylcarbazole, and a known metabolite, 3-methyl-carbazole were isolated from the roots of Murraya koenigii. All three compounds were identified by detailed spectral analyses including 2D NMR studies and their structures confirmed by