107656-75-7Relevant articles and documents
THE BIOTRANSFORMATION OF TWO ENT-15β,16β-EPOXY-KAURANE DERIVATIVES BY GIBBERELLA FUJIKUROI
Fraga, Braulio M.,Hernandez, Melchor G.,Garcia-Tellado, Fernando,Gonzalez, Pedro,Peralest, Aurea
, p. 133 - 138 (2007/10/02)
The microbiological transformation of the diterpene ent-15β,16β-epoxy-14α-hydroxykaurane into ent-14α,15β-dihydroxy-11α,16α-epoxykaurane, ent-7α,14α,15β-trihydroxy-11α,16α-epoxykaurane and ent-7β,14α,15β-trihydroxy-11α,16α-epoxykaurane has been carried out using the fungus Gibberella fujikuroi.The incubation with this fungus of sideroxol (ent-7α,18-dihydroxy-15β,16β-epoxykaurane) gave as main products ent-7α,15β,18-trihydroxy-11α,16α-epoxykaurane and ent-7α,13,18-trihydroxy-15α,16α-epoxykaurane.Some of these compounds were identified as their acetate derivatives.The presence of the 15α,16α-epoxy group in these two substrates inhibits transformations involving oxidation at C-9 and favours the hydroxylation at C-11(β).
DITERPENES FROM SIDERITIS INFERNALIS
Fernandez, Concepcion,Fraga, Braulio M.,Hernandez, Melchor G.
, p. 2573 - 2576 (2007/10/02)
Key Word Index - Sideritis infernalis; Labiatae; diterpenes; ent-kaurene; episinfernal; sinfernal; sinfernol; epoxysinfernol; canditriol.Five new ent-kaurene diterpenes, episinfernal, sinfernal, sinfernol, epoxysinfernol and canditriol, and the known one, candol B, candicandiol and candidiol, have been isolated from the aerial parts of Sideritis infernalis.