7 výsledky
Ervadivamines A (1) and B (2), two unprecedented trimeric monoterpenoid indole alkaloids, were isolated from Ervatamia divaricata. They are the first examples of vobasine-iboga-vobasine-type alkaloid with both C-C and C-N linkage patterns. Their structures including absolute configurations were
Four vobasinyl-ibogan type bisindole alkaloids, ervachinines A-D (1-4), along with 12 known terpenoid indole alkaloids, were isolated from the whole plant of Ervatamia chinensis. Their structures were elucidated by analysis of spectroscopic data, including 1D and 2D NMR, and the absolute
Camptothecin (CPT) is a modified monoterpene indole alkaloid produced by Camptotheca acuminata (Nyssaceae), Nothapodytes foetida, Pyrenacantha klaineana, Merrilliodendron megacarpum (Icacinaceae), Ophiorrhiza pumila (Rubiaceae), Ervatamia heyneana (Apocynaceae) and Mostuea brunonis (Gelsemiaceae),
Six new indole alkaloids, 14,15-didehydro-10,11-dimethoxy-16-epivincamine (1), 14,15-didehydro-10-hydroxy-11-methoxy-16-epivincamine (2), 14,15-didehydro-10,11-dimethoxyvincamine (3), 14,15-didehydro-10-hydroxy-11-methoxyvincamine (4), 19,20-didehydro-6alpha-hydroxyervatamine (5), and
BACKGROUND
The ethanol extracts and their fractions of three Indian medicinal plants, Ervatamia coronaria (Jacq.) Stapf, (Apocynaceae), Mimosa pudica L. (Mimosaceae) and Caesalpinia bonduc (L.) Roxb. (Caesalpiniaceae) were tested for their cytotoxic activity in the brine shrimp lethality (BSL)