6-Methylpurine, 6-Methyl-9-β-ᴅ -ribofuranosylpurine, and 6-Hydroxymethyl-9-β-D-ribofuranosylpurine as Antiviral Metabolites of Collybia maculata (Basidiomycetes)

Abstract

6-Methylpurine (1), 6-methyl-9-β-ᴅ -ribofuranosylpurine (2) and 6-hydroxymethyl-9-β-ᴅ -ribo- furanosylpurine (3) were isolated from mycelial cultures of Collybia maculata and their antifungal, cytotoxic and antiviral activities investigated. This is the first report on the natural occurrence of these compounds.