New β-carboline and indole alkaloids from Actinomycete Actinomadura sp BCC 24717

Four new beta-carbolines 1-4 and two new indoles 5-6 were isolated together with thirteen known compounds from actinomycete, Actinomadura BCC 24717. Structures of the new compounds, 1-6, were determined by NMR spectroscopic and MS spectrometric analyses. Compound 4 exhibited cytotoxicity to Vero cells and compound 6 showed antifungal activity with IC50 35.91 mu g/mL and 41.97 mu g/mL, respectively. (C) 2013 Phytochemical Society of Europe. Published by Elsevier B.V. All rights reserved.