The application of a lactam enolate-pyridone addition sequence, originally developed for cytisine, has been applied successfully to generate the first examples of 4-halocytisines. Variation of the lactam component provides cyfusine and 4-fluorocyfusine.
内酰胺烯醇-
吡啶酮加成序列最初是为
胞嘧啶开发的,现已成功应用于生成首批 4-卤代
胞嘧啶。内酰胺成分的变化提供了 cyfusine 和 4-
氟 cyfusine。