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Collect. Czech. Chem. Commun. 1962, 27, 276-288

On steroids. LXV. Microbiological hydroxylation of 18-substituted steroids. Partial synthesis of 11β-hydroxy-3,20-dioxopregn-4-en-18-oic acid (18→11) lactone from (20R)-20-hydroxy-3-oxopregn-4-en-18-oic acid (18→20) lactone

L. Lábler and F. Šorm

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  • Holmlund Chester E., J. Sax Karl, Blank Robert H., Evans Ralph H.: Microbiological transformations of 21-acetoxy-17α-16α-methylpregn-4-ene-3,20-dione. Steroids 1965, 5, 459. <>
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  • Meystre C. H., Heusler K., Kalvoda J., Wieland P., Anner G., Wettstein A.: Reaktionen von Steroid‐Hypojoditen II. Über die Herstellung 18‐oxygenierter Pregnanverbindungen. Über Steroide, 187. Mitteilung. Helvetica Chimica Acta 1962, 45, 1317. <>