Androstane 17-(O-(2-carboxyethyl)oxime) derivatives were prepared either by the reaction of 17-keto derivatives with corresponding substituted hydroxylamine or by the addition of 17-oximino derivatives to the alkyl acrylate and subsequent hydrolysis. Oxidation of the hydroxy group in position 3 in derivatives of this type was performed either by the Oppenauer reaction, transforming 5-ene derivatives into 3-oxo-4-enes, or with Jones reagent in the case of saturated 5α- or 5β-derivatives. Configuration 17E in the whole series of oximes was confirmed by the 1H and 13C NMR spectroscopy.
雄烷17-(
O-(2-羧乙基)
肟)衍
生物可以通过17-酮衍
生物与相应取代
羟胺的反应或通过将17-
肟衍
生物加入烷基
丙烯酸酯并随后
水解来制备。在这类衍
生物中,位置3的羟基氧化可以通过Oppenauer反应将5-烯衍
生物转化为3-酮-4-烯,或者在饱和的5α-或5β-衍
生物中使用Jones试剂来进行。整个
肟系列中17
E构型通过
1H和
13C核磁共振谱确认。