A process of preparing compounds of general formula I,
by cuprate coupling of a vinyl cuprate of general formula II
with a protected enone of general formula IV
to produce a compound of general formula (V)
removing the protecting groups of the compound of general formula (V) and purifying the compound of general formula (I) by chromatography; wherein the vinyl cuprate of formula (II) is prepared by reacting a vinyl stannane of formula III with copper halide CuX and alkyllithium R1Li
and wherein an excess of the alkyllithium is decomposed before the said coupling reaction.
一种通式 I 化合物的制备方法、
通过通式 II 的
乙烯基铜酸盐的
铜酸酯耦合
与通式 IV 的受保护烯酮
生成通式(V)的化合物
去除通式(V)化合物的保护基团,并通过色谱法纯化通式(I)化合物; 其中,式(II)的
乙烯基铜酸盐是通过式Ⅲ的
乙烯基锡烷与卤化
铜CuX和烷基
锂R1Li反应制备的
其中过量的烷基
锂在上述偶联反应前被分解。