1,3-Dimethylguanine, a new purine from the new zealand ascidian botrylloides leachi
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).
Lindsay
BS
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.
Battershill
CN
Copp
BR