Copper-catalyzed 1,3-dipolar cycloaddition has been employed in the reaction of steroidal azides with various terminal alkynes. A number of novel 1,2,3-triazolyl derivatives of pregnane, androstane and D-homoandrostane were obtained in high yield (70–98%). The developed synthetic protocols allowed us to attach the triazolyl moiety to both the side chain and the steroidal backbone directly, despite
铜催化的1,3-偶极环加成已用于甾族
叠氮化物与各种末端炔的反应中。以高收率(70-98%)获得了许多新型的孕烷,雄烷
酮和D-高
雄甾烷的
1,2,3-三唑基衍
生物。尽管多环系统施加了空间位阻,但发达的合成方案使我们能够将三唑基部分直接连接到侧链和甾族骨架上。Cu(II)的存在显示出在温和条件下引起D-均质重排。合理选择
铜预
催化剂可以使我们与
串联D一起进行“点击”反应-homo重排或在没有此过程的情况下。研究了在Cu(II)催化下16-杂取代的类
固醇发生D- homo重排的趋势。