Oxacycloalkenones are prepared by reacting a cycloalkenone with a base in the presence of a dioxygen source in a suitable solvent and isolating the desired product. 1-Hydroxy 2-oxa-3-oxo-.DELTA..sup.4 steroids are convenient synthetic precursors to 2-oxa-3-oxo-.DELTA..sup.4 steroids which find use in modern clinical therapy.
氧杂环烯酮是通过在适当溶剂中,将环烯酮与碱在
二氧化碳源存在下反应,并分离所需产物制备的。1-羟基-2-氧杂-3-酮-Δ4类
固醇是方便的合成前体,用于制备现代临床治疗中使用的2-氧杂-3-酮-Δ4类
固醇。