Models of folate cofactors - 23. A synthetic strategy to the aspidosperma skeleton. Synthesis of the 21-epimer of 20-deethyl-3,17-dioxo-16-ethoxycarbonyl-1-methylaspidospermidine.
作者:R.H Huizenga、J van Wiltenburg、H Bieräugel、U.K Pandit
DOI:10.1016/s0040-4020(01)86453-x
日期:1991.1
late models and amines furnish enaminones. The enaminones react with acid chlorides to give enamidones, which can be cyclized by Lewis acids to 2-oxopyrrolo[2,3-d]carbazoles or 1′-carbonyl-pyrrolo[2,3-d]carbazoles. The influence of both the location of the amide carbonyl (in the enamidone) and the Lewis acids on the stereochemical outcome of the cyclization reaction is discussed. The approach has been
N(5),N(10)-亚
甲基四
氢叶酸模型与胺之间的
碳碎片转移反应提供了
烯胺
酮。
烯胺
酮与酰
氯反应生成
烯mid
酮,其可以被
路易斯酸环化为2-
氧代
吡咯并[2,3-d]
咔唑或1'-羰基-
吡咯并[2,3-d]
咔唑。讨论了
酰胺羰基(在
烯酮中)的位置和
路易斯酸对环化反应的立体
化学结果的影响。该方法已应用于标题化合物的合成。