M. Kobayashi et al., THE ABSOLUTE STEREOSTRUCTURE OF ARENASTATIN-A, A POTENT CYTOTOXIC DEPSIPEPTIDE FROM THE OKINAWAN MARINE SPONGE DYSIDEA-ARENARIA, Chemical and Pharmaceutical Bulletin, 42(10), 1994, pp. 2196-2198
The absolute stereostructure of arenastatin A (1), which was isolated
from the Okinawan marine sponge Dysidea arenaria, has been determined
on the bases of NMR and synthetic studies. Arenastatin A (1) is a cycl
ic depsipeptide exhibiting extremely potent cytotoxicity against KB ce
lls with IC50 5 pg/ml.