title: One step syntheses of adenine, xanthine and guanine from phenylazomalonic acid derivatives.
mesh_terms: D000225:Adenine / Q000138:chemical synthesis*; D006147:Guanine / Q000138:chemical synthesis*; D008314:Malonates; D008722:Methods; D014970:Xanthines / Q000138:chemical synthesis*
chemical_list: D008314:Malonates; D014970:Xanthines; D006147:Guanine; D000225:Adenine