The preparation of 17 -hydroxyestra-4,6-dien-3-one and its stereospecific  -face reduction at carbons 6 and 7.
D001407:Bacillus / Q000378:metabolism; D002855:Chromatography, Thin Layer; D003903:Deuterium; D004962:Estranes / Q000138:chemical synthesis* / Q000378:metabolism; D006914:Hydroxysteroids / Q000138:chemical synthesis / Q000378:metabolism; D007664:Ketosteroids / Q000138:chemical synthesis / Q000378:metabolism; D013056:Spectrophotometry, Ultraviolet; D014316:Tritium
D004962:Estranes; D006914:Hydroxysteroids; D007664:Ketosteroids; D014316:Tritium; D003903:Deuterium