A Bioactive Depsidone from Lachnum virgineum (Hyaloscyphaceae)

گونه های جدیدی از دیسکومیست های چوبزی راسته helotiales برای ایران

در این مقاله چهار گونه آسکومیست به اسامی: arachnopeziza aurelia، hymenoscyphus scutula،lachnum nudipes وl. virgineum از راسته helotiales برای نخستین بار از ایران معرفی می شوند. سه گونهa. aurelia،  l. virgineum و l. nudipes به تیره hyaloscyphaceae و گونه h. scutula به تیره helotiaceae تعلق دارند. هر چهار گونه چوبزی بوده و از روی میزبان های چوبی جدا شده اند. این نخستین گزارش از گونه هایی از سه جن...

Phomopsidone, a novel depsidone from an endophyte of the medicinal plant Eupatorium arnottianum.

The medicinal plant Eupatorium arnottianum can be found in the Northeast and center of Argentina and the South of Bolivia. From plant material collected in Argentina an endophytic Phomopsis was isolated. The fungus was identified by microscopic features and analysis of its ITS sequence. Cultures yielded, besides mellein and nectriapyrone, a novel depsidone derivative for which we propose the na...

Insights from the first putative biosynthetic gene cluster for a lichen depside and depsidone.

The genes for polyketide synthases (PKSs), enzymes that assemble the carbon backbones of many secondary metabolites, often cluster with other secondary pathway genes. We describe here the first lichen PKS cluster likely to be implicated in the biosynthesis of a depside and a depsidone, compounds in a class almost exclusively produced by lichen fungi (mycobionts). With degenerate PCR with primer...

Atrovirisidone B, a new prenylated depsidone with cytotoxic property from the roots of Garcinia atroviridis.

A new prenylated depsidone, atrovirisidone B (2), together with naringenin (3) and 3,8"-binaringenin (4) were isolated from the roots of Garcinia atroviridis. Their structures were determined on the basis of spectral data interpretation. Compound 2 showed cytotoxic activity against human breast (MCF-7), human prostate (DU-145) and human lung (H-460) cancer cells.

Bioactive Agents From Sea