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
Studies in the steroid group. Part LXXVIII. The conversion of hydroxysteroids (R<sup>1</sup>OH) into O-substituted glycollic esters (R<sup>1</sup>O·CH<sub>2</sub>·CO<sub>2</sub>R<sup>2</sup>)
作者:J. M. Evans、G. D. Meakins、Y. Morisawa、P. D. Woodgate
DOI:10.1039/j39680002841
日期:——
O-Substituted glycollic esters (R1O·CH2·CO2R2) are readily prepared by treating hydroxy-steroids (R 1OH) with alkyl diazoacetates in the presence of fluoroboric acid.