Structures of Agelasines, Diterpenes Having a 9-Methyladeninium Chromophore Isolated from the Okinawan Marine Sponge Agelas nakamurai Hoshino

Structures of Agelasines, Diterpenes Having a 9-Methyladeninium Chromophore Isolated from the Okinawan Marine Sponge <i>Agelas nakamurai</i> Hoshino Agelasines O–U, new diterpene alkaloids with a 9-N-methyladenine unit from a marine sponge Agelas sp. Agelamasines A and B, diterpene alkaloids from an Okinawan marine sponge Agelas sp. Agelasines H and I, 9-Methyladenine-Containing Diterpenoids from an<i> Agelas</i> Sponge Agelasines H and I, 9-Methyladenine-Containing Diterpenoids from an<i> Agelas</i> Sponge Four Novel Diterpenoids, Including Nakamurol A with a Unique Thelepogane Skeleton, from the Marine Sponge <i>Agelas nakamurai</i> Structures and Biological Evaluations of Agelasines Isolated from the Okinawan Marine Sponge <i>Agelas nakamurai</i> Structures and Biological Evaluations of Agelasines Isolated from the Okinawan Marine Sponge <i>Agelas nakamurai</i> Agelasine G, a New Antileukemic Alkaloid from the Okinawan Marine Sponge Agelas sp. Physiologically active marine natural products from Porifera. VIII. Agelasidines. Novel hypotaurocyamine derivatives from the Okinawan sea sponge Agelas nakamurai Hoshino