A facile strategy for the preparation of two isomeric drospirenones 13 and 16 possessing a 14β-hydrogen was developed, using 3β-hydroxyandrost-5-en-17-one as the starting material. The total synthetic route involves eight steps, giving 2% overall yield. The structures of the main compounds 11, 13, 14 and 16 were determined by single crystal XRD analysis.
一种简单的策略用于制备两种异构体
溴噻班酮13和16,它们具有14β-氢,以3β-羟基
雄甾-5-烯-17-酮为起始材料。该合成路线涉及八个步骤,总体产率为2%。主要化合物11、13、14和16的结构通过单晶XRD分析确定。