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New pyridocarbazole alkaloids from Strychnos nitida
- Li, Wei, Tang, Gui-Hua, Chen, Lin, Tang, Ya-Qi, Xu, You-Kai, Liu, Bo, Yin, Sheng
- Natural product research 2018 v.32 no.13 pp. 1532-1536
- Strychnos, chemical constituents of plants, indole alkaloids, moieties, monoterpenoids, nuclear magnetic resonance spectroscopy, spectral analysis
- Phytochemical investigation of Strychnos nitida has led to the isolation of three new racemic pyridocarbazole alkaloids, (±)-stritidas A-C (1–3) and three known monoterpenoid indole alkaloids (4–6). Compounds 2 and 3 represent the first examples of pyridocarbazole alkaloids featuring an N-2-hydroxyethyl moiety. Their structures were determined by combined spectroscopic data (MS, UV, IR and NMR) and chemical methods.