indole nitrogen. A -butyl-dimethylsilyl (TBDMS) protecting group facilitates the removal of the angular benzylic proton in position 10. The reaction of the 10-lithio compound 5 with electrophiles affords cis or trans fused products, depending on reagent and reaction conditions.
8α-麦角酰
脲-1(terguride)去质子化的区域选择性取决于
吲哚氮上的取代基。-丁基-二甲基甲
硅烷基(TB
DMS)保护基团有助于除去位置10的角苄基质子。10-
硫代化合物5与亲电试剂的反应产生顺式或反式熔融产物,具体取决于试剂和反应条件。