Selective hydrocarbon oxidation; dry ozonation of steroids on silica
作者:Richard L. Wife、Deirdre Kyle、Lawrence J. Mulheirn、Henk C. Volger
DOI:10.1039/c39820000306
日期:——
Dry ozanation of steroids on silica gives ring-D oxidized products, including isomeric ozonides, which confirm the postulated mechanism of saturated C–C bond cleavage.
Microbiological hydroxylation of steroids. Part IV. The pattern of dihydroxylation of mono-oxygenated 5α-androstanes with cultures of the fungus Calonectria decora
作者:A. M. Bell、P. C. Cherry、I. M. Clark、W. A. Denny、Ewart R. H. Jones、G. D. Meakins、P. D. Woodgate
DOI:10.1039/p19720002081
日期:——
concerned with the relation between the pattern of the dihydroxylation by Calonectriadecora of mono-oxygenated 5α-androstane derivatives (mainly ketones), and the position of the oxygen function in the substrate. Terminal ring ketones (3, 4, 16, and 17) are converted, in useful yields, into one or two dihydroxy-ketones. (Ring B and C ketones are much less satisfactory as substrates.) The structures of most