Rupestrisine A and B, two novel dimeric indole alkaloids from Alstonia rupestris
Abstract
Rupestrisine A (1), an unprecedented heteroyohimbine-kopsinine type dimeric indole alkaloid, and rupestrisine B (2), the first example of yohimbine-kopsinine type bisindole alkaloid, were isolated from Alstonia rupestris. Their structures were elucidated based on 1D and 2D-NMR, MS, ECD, FTIR and UV spectroscopic data. Compound 1 showed moderate activity of inhibiting NO production of RAW264.7 cells induced by lipopolysaccharide with an IC50...
Paper Details
Title
Rupestrisine A and B, two novel dimeric indole alkaloids from Alstonia rupestris
Published Date
Dec 1, 2021
Journal
Volume
87
Pages
153525 - 153525
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