Secoiridoids and Iridoids from Morinda asteroscepa
Zandi, L., Makungu, M., Munissi, J. J. E., Duffy, S., Puttreddy, R., von der Heiden, D., Rissanen, K., Avery, V. M., Nyandoro, S. S., & Erdélyi, M. (2020). Secoiridoids and Iridoids from Morinda asteroscepa. Journal of Natural Products, 83(9), 2641-2646. https://doi.org/10.1021/acs.jnatprod.0c00447
Published inJournal of Natural Products
© 2020 American Chemical Society and American Society of Pharmacognosy
The new 2,3-secoiridoids morisecoiridoic acids A (1) and B (2), the new iridoid 8-acetoxyepishanzilactone (3), and four additional known iridoids (4–7) were isolated from the leaf and stem bark methanol extracts of Morinda asteroscepa using chromatographic methods. The structure of shanzilactone (4) was revised. The purified metabolites were identified using NMR spectroscopic and mass spectrometric techniques, with the absolute configuration of 1 having been established by single-crystal X-ray diffraction analysis. The crude leaf extract (10 μg/mL) and compounds 1–3 and 5 (10 μM) showed mild antiplasmodial activities against the chloroquine-sensitive malaria parasite Plasmodium falciparum (3D7).