3 rezultātiem
The ethanolic extract from the stem bark of Goniothalamus marcanii Craib was shown in preliminary brine shrimp lethality data having good cytotoxic activity. Further bioassay guided isolation was done by means of solvent partition, chromatography and precipitation to provide four isolated compounds:
A series of natural aristolactams and their analogues have been prepared and evaluated for antitumor activity against human cancer cells, including multi-drug resistant cell lines. Naturally occurring aristolactams, such as aristolactam BII (cepharanone B), aristolactam BIII, aristolactam FI
BACKGROUND
In the search for cytotoxic natural products as DNA topoisomerase poisons, we have assessed six annonaceus compounds (the acetogenins annonacin and rolliniastatin-1, the styryl-lactones etharversin and altholactone and the alkaloids thaligrisine and cepharanone-B) for cytotoxic activity