Agelasine-E and -F, novel monocyclic diterpenoids with 9-methyladeninium unit possessing inhibitory effects on Na,K-ATPase isolated from the Okinawan sea sponge Hoshino
Agelasine-E and -F, novel terpenoids with a 9-methyladeniniumunit have been isolatedfrom the orange colored seaspongeHoshino as Na,k-ATPase inhibitors and their structures and absolute configurations have been determined on the basis of spectral data and chemical conversions.