title: 1,3-Dimethylguanine, a new purine from the new zealand ascidian botrylloides leachi
abstract: The new purine 1,3-dimethylguanine (1) has been isolated from the ascidian Botrylloides leachi. The structure of 1 was elucidated by analysis of spectroscopic data, by comparison with the regioisomeric purine 1,3-dimethylisoguanine (2), and by hydrolysis to theophylline (3).
authors.affiliation: Department of Chemistry, University of Auckland, Private Bag 92019, Auckland, New Zealand, and National Institute of Water and Atmospheric Research, P.O. Box 14-901, Kilbirnie, Wellington, New Zealand.
authors.initials: BS
authors.lastname: Lindsay
authors.initials: CN
authors.lastname: Battershill
authors.initials: BR
authors.lastname: Copp