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Soybean sterols were converted into androst-4-ene-3,17-dione (AD) and 9α-hydroxyandrost-4-ene-3,17-dione (9-OH-AD) using three actinobacterium strains. The transformation of a microcrystallic… Continue Reading
Five 14α-hydroxylated derivatives of androstane and pregnane steroids were obtained using mycelium of the mold fungus Curvularia lunata (VKPM F-981). The conditions for microbiological transformation… Continue Reading
The main and side products of hydroxylation by the C. lunata VKPM F-981 mycelium of fourteen Δ4-3-ketosteroids of the estrane, androstane, and pregnane series and six of their Δ5-3β-hydroxy analogues… Continue Reading
Transformation of 16 Δ5-3β-hydroxy- and Δ4-3-ketosteroids of androstane and pregnane classes was carried out using Curvularia lunata mycelium suspended in phosphate buffer with methyl-β-cyclodextrine… Continue Reading
Conditions of conversion of 17α-methyltestosterone to methandrostenolone with the presence of modified β-cyclodextrins (methylcyclodextrin, hydroxypropylcyclodextrin, and hydroxyethylcyclodextrin) in… Continue Reading
Hydroxylation activity of the mold fungi belonging to the orders Dothideales, Hypocreales, and Mucorales towards Δ5-3β-hydroxysteroids was studied. The fungi Bipolaris sorokiniana, Fusarium sp., and… Continue Reading
Abstarct9α-Hydroxy derivatives were prepared from 11 steroids of androstane and pregnane series using Rhodococcus erythropolis VKPM Ac-1740 culture with 0.5–10 g/l substrate concentration in the… Continue Reading
The hydroxylase activities of new strains such as Curvularia lunata, C. geniculata, C. eragrostidis, C. prasadii, Ulocladium botrytis, Alternaria tenuis, and Fusarium oxysporum toward three steroid… Continue Reading
Showing the economic problems of microstates in Oceania. Marked features of this region. Investigated possible ways of solving problems of the region.
Abstract The complexation of cobalt(II) with HEDP (1-hydroxyethylidene-1,1-diphosphonic acid) in aqueous solutions was studied by spectrophotometry over a wide range of pH values, including strongly… Continue Reading