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Phytochemical reinvestigation on the cultural broth of Boreostereum vibrans led to the isolation of six new vibralactone derivatives, vibralactone N (1), vibralactone O (2), vibralactone P (3), 10-lactyl vibralactone G (4), (3S*, 4R*)-6-acetoxymethyl-2,2-dimethyl-3,4-dihydro-2H-chromene-3,4-diol (5), vibralactone Q (6). Their structures were elucidated by extensive spectroscopic methods.

Two new steroids, 3α,17α,19,20-tetrahydroxy-4α-methylpregn-8-ene (1) and 3α,12α,17α,20-tetrahydroxy-4α-methylpregn-8-ene (2) and three new sesquiterpenoids, 12-hydroxy-α-cadinol (3), 3α,12-dihydroxy-δ-cadinol (4), and 3α,6α-dihydroxyspiroax-4-ene (5), have been isolated from cultures of the fungus Phellinus igniarius. Their structures were characterized based on extensive spectroscopic data. In preliminary in vitro assays, compounds 3 and 4 exhibited the vascular-activities against phenylephrine-induced vasoconstriction with the relaxing rates of 11.0 % and 7.0 % at 3 × 10−4 M, respectively. Electronic supplementary material The online version of this article (doi:10.1007/s13659-014-0045-z) contains supplementary material, which is available to authorized users.

Six new lanostane-type triterpenoids, namely leucocontextins S–X (1–6), together with twelve known compounds, were isolated from the fruiting bodies of Ganoderma leucocontextum. Their structures were established by MS and NMR data. Graphical Abstract Electronic supplementary material The online version of this article (doi:10.1007/s13659-016-0089-3) contains supplementary material, which is available to authorized users.