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5α-雄甾-3;17-双酮用节杆菌转化得到四个含9α-羟基的产物(2～5),其中△~1-5α-雄甾-9α-羟基-3,17-双酮为主要产物。它们的结构经光谱分析和化学方法测定。
5α-androst-3; 17-dione was transformed with Arthrobacter to give four 9α-hydroxyl containing products (2-5), in which △ ~ 1-5α-androsta-9α-hydroxy-3,17- As the main product. Their structure is determined spectroscopically and chemically.