Loganin and secologanin derived tryptamine-iridoid alkaloids from Palicourea crocea and Palicourea padifolia (Rubiaceae).
Berger A., Kostyan M.K., Klose S.I., Gastegger M., Lorbeer E., Brecker L. & J. Schinnerl. 2015. Loganin and secologanin derived tryptamine-iridoid alkaloids from Palicourea crocea and Palicourea padifolia (Rubiaceae). Phytochemistry 116: 162–169.