Abstract: Eight phenolic constotuents including three specific 5-lipoxidase inhibitors 3-(4-acetoxyphenyl)1-,2,4,7,8-pentacetoxy-dibenaofuran (1), 3-(4-acetoxyphenyl)-7,8-dihydroxy-1,2,4,_triacetoxy-dibenzofuran (2),1,2-diaceroxy-3-(4-hydroxyphanyl)-4.7,8-trihydroxy-divenzofuran (3),and 2,3-diacetoxy-4′,4″,5,6-tetrahydroxy-p-terpheny (4),l,4-benzenediol (5),4-hydroxy-benzoic acid (6),P-anisic acid (7),4-hydroxybevenzaldehyde (8),together with thioacetic anhydride (9) and l-0-β-D-glucopyranosyl-(2s,3R,4E,8E,2′R)-2-N-(2′-hydroxyphenyl)-9-methyl-4,8-sph-ingadienine (10) were isolated from the fruiting bodies of Basidiomycetes Boletopsis grisea (peck) Bond. & Singer (polyporaceae).Their structure were elucidated by spectroscopic evidence.

Key words: Basidiomycetes