library of 17 novel estrogen analogues 3 and 4 containing different substituents at rings A and D (steroid nomenclature) was prepared in a five- to seven-step synthesis. The key transformation is a Sonogashira-coupling of cyclic vinyl iodides of type 7 or 8 with phenylacetylenes of type 9. Reduction of the keto function in 3 led to the estradiol analogue 5.
通过五至七步合成过程,制备了在环A和D处包含不同取代基的17种新颖
雌激素类似物3和4(类
固醇命名法)的文库。关键的转变是类型7或8的环状
乙烯基碘与类型9的
苯乙炔的Sonogashira偶联。3中酮基功能的降低产生了雌二
醇类似物5。