1,3-Dimethylguanine, a New Purine from the New Zealand Ascidian Botrylloides leachi

1,3-Dimethylguanine, a New Purine from the New Zealand Ascidian <i>Botrylloides leachi</i> Isolation and Characterization of the New Purine 1,3,7-Trimethylisoguanine from the New Zealand Ascidian <i>Pseudodistoma </i><i>c</i><i>ereum</i> Isolation and Characterization of the New Purine 1,3,7-Trimethylisoguanine from the New Zealand Ascidian Pseudodistoma cereum 6-Methoxy-7-methyl-8-oxoguanine, an Unusual Purine from the Ascidian <i>Symplegma rubra</i> Isolation and Characterization of 1,3-Dimethylisoguanine from the Bermudian Sponge <i>Amphimedon viridis</i> 1,3-Dimethylisoguanine, a New Purine from the Marine Sponge <i>Amphimedon viridis</i> 3,7-Dimethylguanine, a New Purine from a Philippine Sponge Zyzzya fuliginosa. Isolation of 2-(3‘-Bromo-4‘-hydroxyphenol)ethanamine from the New Zealand Ascidian <i>Cnemidocarpa bicornuta</i> Isolation of 2-(3‘-Bromo-4‘-hydroxyphenol)ethanamine from the New Zealand Ascidian <i>Cnemidocarpa bicornuta</i> 1,3,7-Trimethylguanine from the Sponge Latrunculia brevis