title: Isolation and characterization of the new purine 1,3, 7-trimethylisoguanine from the New Zealand ascidian Pseudodistoma cereum.
abstract: The new purine 1,3,7-trimethylisoguanine (1) has been isolated from the ascidian Pseudodistoma cereum. The structure of 1 was elucidated by analysis of NMR spectroscopic and mass spectrometric data and by comparison with the regioisomeric purine 1,3,7-trimethylguanine (2).
authors.affiliation: Department of Chemistry, University of Auckland, Private Bag 92019, Auckland, New Zealand. b.copp@auckland.ac.nz
authors.forename: B R
authors.initials: BR
authors.lastname: Copp
authors.forename: C M
authors.initials: CM
authors.lastname: Wassvik
authors.forename: G
authors.initials: G
authors.lastname: Lambert
authors.forename: M J
authors.initials: MJ
authors.lastname: Page
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid; D002853:Chromatography, Liquid; D008401:Gas Chromatography-Mass Spectrometry; D006147:Guanine / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D009520:New Zealand; D013056:Spectrophotometry, Ultraviolet; D014561:Urochordata / Q000737:chemistry*
chemical_list: C414697:1,3,7-trimethylisoguanine; D006147:Guanine