Steroid O-(ω-hydroxyalkyl)oximes with varying alkyl chain length were prepared from the corresponding carboxylic acids using the reduction of mixed anhydrides with sodium borohydride. An unexpected reaction course was observed with O-(2-carboxyethyl)oximes of 3-oxo-4-ene steroids, where a 4,5-dihydroisoxazol-3(2H)-one derivative was formed as a side product.
类
固醇O-(ω-羟基烷基)
肟类化合物通过相应
羧酸的混合酐还原制备而成。对3-酮-4-烯类类
固醇的O-(2-羧乙基)
肟类化合物观察到了意外的反应过程,形成了4,5-二氢
异噁唑-3(2H)-酮衍
生物作为副产物。