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    • 2. 发明公开
    • 하이드록시스테로이드 디하이드로게나아제를 이용하는, 옥소스테로이드 화합물의 환원에 의한 또는 하이드록시스테로이드 화합물의 산화에 의한 스테로이드 유도체의 제조를 위한 공정
    • 通过减少氧化固体化合物或通过使用氢氧化酶脱氢酶氧化羟肟酸化合物来制备甾体衍生物的方法
    • KR1020090004862A
    • 2009-01-12
    • KR1020087020425
    • 2007-04-11
    • 이에페 게엠베하
    • 굽타,안트예췐쳐,앙케보브코바,마리아
    • C12P33/02C12P33/16
    • C12P33/02C12P33/16C12P41/002
    • A process for the enantioselective enzymatic reduction of compounds which have a steroid structure (ABCD), including one or more heteroatoms, one or more double bonds and/or an aromatic in the ring structure and which have at least one oxo group at position 3, 7, 11, 12 or 17 of the steroid ring system or in alpha-position at any carbon radical on the steroid skeleton (= oxosteroid compound/hydroxysteroid compound), where the oxosteroid compound is reduced with a hydroxysteroid dehydrogenase in the presence of a cofactor NADH or NADPH is characterized in that a) the oxosteroid compound is present in the reaction mixture in a concentration of >50 g/l, b) the oxidized cofactor NAD or NADP which is formed by the hydroxysteroid dehydrogenase is regenerated continuously by oxidation of a secondary alcohol of the general formula RxRyCHOH where Rx, Ry independently of one another represent hydrogen, branched or unbranched Cl-C8-alkyl and Ctotal >=3, or by oxidation of a C4-C6-cycloalkanol, and c) an additional oxidoreductase/alcohol dehydrogenase is employed for oxidizing the secondary alcohol of the general formula RXRYCHOH or of the cycloalkanol.
    • 在环结构中具有类固醇结构(ABCD),包括一个或多个杂原子,一个或多个双键和/或芳族的化合物的对映选择性酶还原方法,其在第3位具有至少一个氧代基, 类固醇环系的7,11,12或17,或在类固醇骨架上的任何碳自由基的α位置(= oxosteroid化合物/羟类固醇化合物),其中在辅助因子存在下,用羟基类固醇脱氢酶还原氧化甾体化合物 NADH或NADPH的特征在于a)氧化甾体化合物以> 50g / l的浓度存在于反应混合物中,b)由羟基类固醇脱氢酶形成的氧化辅因子NAD或NADP通过氧化 通式为RxRyCHOH的仲醇,其中Rx,Ry彼此独立地表示氢,支链或非支链的C 1 -C 8 - 烷基和C total = 3,或通过C 4 -C 6 - 环烷醇的氧化, d c)使用另外的氧化还原酶/醇脱氢酶来氧化通式RXRYCHOH或环烷醇的仲醇。