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Indole alkaloid glycosides from the aerial parts of Strobilanthes cusia
Wei Gu1, Yu Zhang, Xiao-Jiang Hao
1Key Laboratory of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, People's Republic of China.
Abstract:
Three indole alkaloid glycosides, strobilanthosides A-C (1-3), two known indole alkaloid glucosides (4 and 5), and five phenylethanoid glycosides (8-10) were isolated from the aerial parts of Strobilanthes cusia. The structures of the new compounds were elucidated by spectrometric analysis, and the absolute configurations of 1 and 2 were established by ECD spectrocsopy. N'-β-d-Glucopyranosylindirubin (5) showed weak antibacterial activity (MIC 62.5-125 μM) against Staphylococcus aureus.

